Garcinia Cambogia: Benefits, Forms, Dosing, and Side Effects

Garcinia cambogia (also known as Garcinia gummi-gutta, Malabar tamarind, or brindle berry) is a tree native to India and Southeast Asia, commonly found in tropical evergreen forests [1][2]. The fruit has a long history in traditional medicine — used as a tea for inflammation and stomach complaints — and its rind has been used as a food preservative and culinary ingredient throughout the region [2].

The compound of primary interest in Garcinia supplements is hydroxycitric acid (HCA), which occurs naturally in the dried fruit rind at concentrations up to 30% by weight [1]. Commercial Garcinia extracts are typically standardized to contain 50-60% HCA [1]. HCA has been studied primarily for its potential effects on appetite suppression and body weight, based on a proposed biochemical mechanism involving inhibition of ATP-citrate lyase, a cellular enzyme involved in fatty acid synthesis [1][3].

Interest in Garcinia cambogia as a weight loss supplement surged after it was popularized on television in the early 2010s, and it remains one of the most commonly purchased weight loss supplements worldwide. However, the clinical evidence for its efficacy is mixed at best, and serious safety concerns — particularly liver toxicity — have emerged from case reports and regulatory investigations [1][2][4][5].

Laboratory studies in animals have demonstrated that HCA can suppress food intake and decrease body weight gain [1]. However, translating these findings to humans has proven inconsistent. Several systematic reviews and meta-analyses have concluded that any weight loss effect of Garcinia cambogia is modest and clinically uncertain [2][4][5]. The U.S. National Center for Complementary and Integrative Health (NCCIH) states plainly: "It's unclear whether garcinia cambogia products help with weight loss" [2].

Adding to the complexity, the French Agency for Food, Environmental and Occupational Health & Safety (ANSES) has advised against the consumption of any products containing Garcinia, citing the potential for liver injury and other adverse effects [1][6]. This regulatory stance reflects accumulating case reports of hepatotoxicity associated with Garcinia-containing supplements [1][2][7][8][9].

This article reviews all available clinical evidence for Garcinia cambogia, including weight loss trials, kidney stone research, safety data, drug interactions, and dosing considerations.

Table of Contents

• Overview
• Forms and Bioavailability
• Evidence for Benefits
• Recommended Dosing
• Safety and Side Effects
• Drug Interactions
• Dietary Sources
• References

Overview

Garcinia cambogia (also known as Garcinia gummi-gutta, Malabar tamarind, or brindle berry) is a tree native to India and Southeast Asia, commonly found in tropical evergreen forests [1][2]. The fruit has a long history in traditional medicine — used as a tea for inflammation and stomach complaints — and its rind has been used as a food preservative and culinary ingredient throughout the region [2].

The compound of primary interest in Garcinia supplements is hydroxycitric acid (HCA), which occurs naturally in the dried fruit rind at concentrations up to 30% by weight [1]. Commercial Garcinia extracts are typically standardized to contain 50-60% HCA [1]. HCA has been studied primarily for its potential effects on appetite suppression and body weight, based on a proposed biochemical mechanism involving inhibition of ATP-citrate lyase, a cellular enzyme involved in fatty acid synthesis [1][3].

The clinical evidence for Garcinia cambogia's efficacy is mixed. While laboratory and animal studies have consistently shown appetite suppression and reduced body weight gain with HCA administration, human clinical trials have produced conflicting results [1][2]. Several systematic reviews and meta-analyses have concluded that any weight loss effect is modest and clinically uncertain [2][4][5]. The NCCIH states: "It's unclear whether garcinia cambogia products help with weight loss" [2].

Serious safety concerns have emerged, particularly hepatotoxicity (liver damage). The French Agency for Food, Environmental and Occupational Health & Safety (ANSES) has advised against the consumption of any products containing Garcinia [1][6]. Multiple case reports have documented liver failure, including one requiring transplantation and one resulting in death [1][7][8][9].

Forms and Bioavailability

HCA Chemistry and Stability

Hydroxycitric acid (HCA) in its free molecular form is chemically unstable [1]. To address this, ingredient manufacturers commonly bind HCA to minerals — most often calcium, potassium, or magnesium — to create stable salt forms suitable for supplement encapsulation [1].

Two branded versions of Garcinia extract dominate the clinical literature:

• Citrimax — standardized to 50% HCA, with HCA bound to calcium and potassium [1]
• SuperCitrimax (also referred to in studies as "Citrimax HCA 600 SGX") — standardized to 60% HCA, also with HCA bound to calcium and potassium [1]

Absorption Characteristics

Despite claims of enhanced absorption, research indicates that even calcium/potassium-bound HCA is only partially absorbed:

• Time to peak blood levels: A study of Citrimax taken as a liquid showed HCA reaching maximum blood concentrations 60 to 90 minutes after ingestion, falling rapidly thereafter [1][10]. A separate study of SuperCitrimax showed peak levels at 2 hours post-ingestion [1][11].
• Partial absorption: Research by Downs et al. (2005) confirmed that even in the calcium/potassium-bound form, HCA absorption is incomplete [1][12]. Earlier work by Loe et al. (2001) reached similar conclusions [1][11].
• Food effect: Taking Garcinia with a full meal results in significantly lower blood levels of HCA compared to taking it on an empty stomach, underscoring the importance of pre-meal dosing [1][12].
• Fiber interference: It has been suggested that high-fiber diets may impair HCA absorption, though this remains speculative [1][13][14].

Mineral Content of Garcinia Supplements

Because HCA is typically bound to calcium and potassium salts, Garcinia supplements at typical daily doses can deliver meaningful amounts of these minerals. For example, a daily dose of 4,500 mg of SuperCitrimax would be expected to provide approximately 720 mg of potassium and 495 mg of calcium [1]. This is a clinically relevant amount — 720 mg potassium represents about 15% of the adequate intake, and 495 mg calcium is roughly 38-50% of the RDA depending on age and sex.

Extract Standardization

Garcinia cambogia extracts are typically standardized to contain 50-60% HCA [1]. The remainder of the extract (40-50% of total weight) is composed of carbohydrates and fat from the fruit rind, though these contribute negligible calories — approximately 3-4 calories per capsule [1].

Comparison of Garcinia Extract Forms

Form	HCA Content	Mineral Binding	Peak Absorption	Notes
Citrimax	50%	Calcium + Potassium	60-90 min (liquid)	Widely used in clinical trials [1][10]
SuperCitrimax (HCA 600 SGX)	60%	Calcium + Potassium	~2 hours	Higher HCA concentration; used in several trials [1][11]
Unbranded extracts	50-60%	Varies (often calcium)	Unknown	Quality and standardization vary [1]
Free HCA	Variable	None	Unstable	Not used in supplements due to instability [1]

Multi-Ingredient Products: A Caution

Garcinia is frequently included as an ingredient in weight loss "formulas" or "blends" containing multiple ingredients without listing the amount of each [1]. These products should be avoided for several reasons: they are unlikely to have been clinically tested as a formula; single-ingredient supplements are preferable for determining whether a specific ingredient works; and multi-ingredient weight loss products are more likely than single-ingredient products to contain dangerous, undeclared drug-like substances or to have other quality problems [1].

Evidence for Benefits

Weight Loss

The evidence that Garcinia cambogia aids weight loss is mixed and overall disappointing. While laboratory and animal studies have consistently shown appetite suppression and reduced body weight gain with HCA administration, human clinical trials have produced conflicting results [1][2].

Early Clinical Trials

Heymsfield et al. (1998) — The first major controlled trial (negative): Published in JAMA, this landmark study involved 135 overweight men and women (many markedly obese) randomized to G. cambogia extract (50% HCA) or placebo. Participants took 1,000 mg of extract 30 minutes before each meal — a total daily dose of 3,000 mg extract containing 1,500 mg HCA. Over 12 weeks on a high-fiber, low-calorie diet, the Garcinia group did NOT lose significantly more weight or fat mass than the placebo group. It was subsequently suggested that the high-fiber diet may have impaired HCA absorption, though this remains speculative [1][13][14].

Mattes et al. (2000) — Positive in women, not men: A 12-week study in overweight women found that those given G. cambogia extract lost more weight than placebo: 8.2 lbs versus 5.3 lbs (a difference of 2.9 lbs over 12 weeks). Importantly, there was no decrease in appetite despite the weight difference. Participants followed a low-calorie diet with exercise. Dosing: 800 mg extract (50% HCA) 30-60 minutes before each meal, daily total 2,400 mg extract containing 1,200 mg HCA. A small number of men were initially included but showed no significant difference from placebo — their results were excluded, meaning the positive result applies only to women [1][15].

Kovacs et al. (2001) — No effect in men: A smaller 2-week study in men found no effect on appetite or weight loss when participants took 500 mg of HCA three times daily (1,500 mg/day HCA) [1][16].

Later Clinical Trials

Westerterp-Plantenga et al. (2002) — Appetite effect without weight loss: This 2-week study found that G. cambogia extract reduced appetite and food intake but did NOT produce a significant reduction in body weight or BMI. Participants took extract (60% HCA) 1 hour before lunch, 1 hour before dinner, and 2 hours after dinner. Each dose was 500 mg extract for a daily total of 1,500 mg extract containing 900 mg HCA [1][10].

Vasques et al. (2014) — Triglyceride reduction without weight loss: A study of obese women over 2 months with a reduced-calorie diet. Dosing: 800 mg extract (50% HCA) 30 minutes before each meal — 2,400 mg extract daily containing 1,200 mg HCA. The Garcinia group showed a significant reduction in triglyceride levels (~23 mg/dL decrease vs. 4.5 mg/dL increase in placebo). However, there was no significant reduction in body weight, BMI, total cholesterol, HDL, LDL, insulin levels, or leptin [1][17].

Systematic Reviews and Meta-Analyses

Golzarand et al. (2020) — A systematic review and dose-response meta-analysis of Garcinia cambogia supplements on obesity indices found that any weight loss effect was modest and required further confirmation [4].

Maunder et al. (2020) — A broader systematic review of herbal medicines for weight loss found limited and inconsistent evidence for Garcinia cambogia, highlighting poor trial quality and heterogeneous study designs [5].

Summary of Weight Loss Trials

Study	Year	Duration	Population	Daily HCA Dose	Key Finding
Heymsfield et al.	1998	12 weeks	135 overweight M+F	1,500 mg	No benefit over placebo [13]
Mattes et al.	2000	12 weeks	Overweight women	1,200 mg	2.9 lbs more than placebo (women only) [15]
Kovacs et al.	2001	2 weeks	Men	1,500 mg	No effect on appetite or weight [16]
Westerterp-Plantenga et al.	2002	2 weeks	Mixed	900 mg	Reduced appetite, no weight change [10]
Vasques et al.	2014	8 weeks	Obese women	1,200 mg	Reduced triglycerides, no weight change [17]

Interpretation of Weight Loss Evidence

The evidence suggests that HCA may, in some situations, modestly help with weight loss, but it is far from reliable [1]. Several patterns emerge:

• HCA may be more effective in women than men — the only positive weight loss trial excluded men's data, and a dedicated men's trial found no effect [1][15][16].
• Appetite vs. body weight effects diverge — some studies show reduced appetite without corresponding weight loss, suggesting appetite suppression alone may be insufficient [1][10].
• The magnitude of any benefit is small — even in the most positive trial, additional weight loss was approximately 2.9 lbs over 12 weeks beyond diet and exercise [1][15].
• Markedly obese individuals may not benefit — the largest negative trial included many markedly obese participants [1][13].

Kidney Stones

Laboratory and animal studies have suggested that HCA may prevent the formation of, and help break down, calcium oxalate kidney stones — the most common type [1][18][19][20].

Preclinical evidence: Chung et al. (2016), published in Nature, demonstrated that HCA effectively inhibited calcium oxalate crystal growth in vitro [18]. Fan et al. (2020) showed HCA reduced calcium oxalate formation in animal models [19]. Yang et al. (2022) provided additional evidence in preclinical models [20].

Human evidence: The only human study (Adiga et al., 2019) was a very small trial examining 300 mg HCA three times daily for one week in stone formers and non-stone formers. The results were negative: HCA did NOT affect 24-hour urinary excretion of calcium or oxalate, nor did it reduce calcium oxalate supersaturation [1][21]. There is currently no evidence that Garcinia supplements prevent or treat kidney stones in humans.

Serotonin Modulation

Research in rats demonstrated that Garcinia extract (SuperCitrimax) inhibits serotonin reuptake in brain cells [1]. A human study showed a 39.8% increase in serum serotonin concentrations after 8 weeks of supplementation [1]. This serotonergic activity has implications for both potential mood effects and serious safety concerns regarding drug interactions with SSRIs (see Drug Interactions) [1][22]. The serotonin effect appears to build up gradually over several weeks rather than occurring immediately [1][22].

Lipid Effects

Beyond the triglyceride reduction found by Vasques et al. (2014), effects on blood lipids have been inconsistent. That same study found no significant effects on total cholesterol, HDL, or LDL [1][17]. No other well-controlled trial has demonstrated reproducible lipid benefits.

Recommended Dosing

Doses Used in Clinical Trials

Trial	Total Daily Extract	HCA Content	Timing	Outcome
Heymsfield (1998)	3,000 mg	1,500 mg	30 min before meals	No benefit [13]
Mattes (2000)	2,400 mg	1,200 mg	30-60 min before meals	Modest weight loss in women [15]
Kovacs (2001)	—	1,500 mg	Before meals	No benefit [16]
Westerterp-Plantenga (2002)	1,500 mg	900 mg	1h before meals + 2h after dinner	Appetite reduction only [10]
Vasques (2014)	2,400 mg	1,200 mg	30 min before meals	Triglyceride reduction only [17]

Timing and Administration

Timing appears to be a critical factor in Garcinia cambogia's potential efficacy:

• Take on an empty stomach, well before meals. Taking Garcinia with a full meal significantly reduces HCA blood levels [1][12].
• Take 1-2 hours before eating. HCA reaches peak blood levels 60-90 minutes after ingestion (liquid) or ~2 hours (tablet/capsule). Taking the supplement 1-2 hours before a meal — rather than the 30-60 minutes commonly on labels — may optimize efficacy [1][10][11].
• Divide doses across meals. Most clinical trials administered Garcinia in divided doses before each main meal [1].

Typical Supplement Doses

Most supplements provide 500-1,000 mg of extract per serving (containing 250-600 mg HCA), with labels typically recommending 2-3 servings per day for total daily intakes of 1,500-3,000 mg of extract (750-1,800 mg HCA) [1].

Important Dosing Considerations

• Elemental HCA vs. extract weight: Labels may list either total Garcinia extract weight or HCA weight specifically. A product listing "1,000 mg Garcinia cambogia (50% HCA)" provides 500 mg of HCA per serving.
• High-fiber diets may reduce absorption: This possibility has been raised but not conclusively demonstrated [1][13][14].
• No established effective dose: Given inconsistent clinical evidence, there is no well-established effective dose for any specific health outcome [2][4].
• No long-term safety data: Most clinical trials lasted 2-12 weeks. Safety beyond this timeframe is poorly characterized [1][2].

Safety and Side Effects

Common Side Effects

Side effects reported in clinical trials and post-marketing surveillance include nausea, gastrointestinal discomfort and diarrhea, and headache [1][2]. These are generally mild and similar in frequency to placebo in controlled trials.

Liver Toxicity — The Primary Safety Concern

The most serious safety concern with Garcinia cambogia is hepatotoxicity (liver damage). Multiple case reports have documented liver injury, including cases requiring liver transplantation and one case resulting in death [1][2][7][8][9][23].

Case 1 — Liver transplant (Lunsford et al., 2016): A previously healthy 34-year-old man with no known risk factors for liver disease developed liver failure after consuming Garcinia cambogia supplements for five months. He had been taking two 80-mg capsules of a Garcinia cambogia 5:1 extract three times daily before meals. He subsequently required a liver transplant [7].

Case 2 — Acute hepatitis resolved (Sharma et al., 2018): A woman developed acute hepatitis and liver failure after consuming 1,400 mg of Garcinia cambogia extract once to twice daily for one month. Her condition resolved within one month after stopping supplementation [8].

Case 3 — Acute hepatitis resolved (Yousaf et al., 2019): Another woman developed acute hepatitis after consuming 1,400 mg of Garcinia cambogia extract daily for one month. The condition resolved after discontinuation [9].

Case 4 — Death (ANSES, 2020): A 71-year-old woman in France died from liver failure three months after beginning a supplement containing 400 mg of Garcinia cambogia once daily. The product contained several other ingredients linked to liver injury, including red yeast rice, rhubarb, and marine collagen. A review concluded Garcinia and/or red yeast rice were the most likely causes [1][6].

Systematic Reviews of Liver Injury

Crescioli et al. (2018) documented multiple cases of acute liver injury following Garcinia cambogia supplementation, establishing a pattern of hepatotoxicity [23]. Ballotin et al. (2021) identified Garcinia cambogia among herbal products associated with hepatotoxicity in a systematic review [24]. Ferreira et al. (2020) documented severe liver injury related to long-term Garcinia intake [25].

Regulatory Response

• France (ANSES, 2025): The French food safety agency now advises against the consumption of ANY products containing Garcinia [1][6].
• United States (FDA): The FDA has not banned Garcinia supplements but has issued warnings about certain products. The LiverTox database catalogues the hepatotoxicity evidence [26].
• NCCIH: States that "it may be unsafe to consume garcinia cambogia products" and that "several cases of liver damage have been reported. Some of these cases were severe, but this appears to be uncommon" [2].

Psychiatric Effects — Mania in Bipolar Disorder

Episodes of mania have been reported in three adults with bipolar disorder (or a possible predisposition) who took Garcinia supplements for 1-2 months [1][27]:

• A 50-year-old man with bipolar I disorder, stable without medication for six years, was hospitalized for mania after taking Garcinia daily for two months [27].
• A 34-year-old woman with bipolar II disorder on several medications developed irritability, pressured speech, decreased need for sleep, and agitation after 4-6 weeks of Garcinia [27].
• A 25-year-old man without psychiatric history was hospitalized for severe mania and diagnosed with bipolar I disorder after two months of daily Garcinia [27].

In each case, the manic episode resolved after stopping Garcinia and receiving standard treatment. The mechanism may relate to Garcinia's serotonergic activity [1][27].

Testicular Toxicity (Animal Data)

A three-month study in genetically obese male rats found Garcinia cambogia extract caused testicular toxicity and atrophy at high doses but not at lower doses [1][28]. The high doses were approximately 20-30 times normal human doses. Similar toxicity has not been reported in humans, but the finding contributes to overall safety concerns [28].

Pregnancy and Breastfeeding

Little is known about the safety of Garcinia cambogia during pregnancy or breastfeeding [2]. Given the hepatotoxicity concerns and lack of safety data, Garcinia supplements should be avoided during pregnancy and breastfeeding.

Drug Interactions

SSRI Antidepressants — Serotonin Toxicity Risk

The most clinically significant drug interaction involves Garcinia cambogia and SSRI antidepressants. Combining the two may cause serotonin toxicity (serotonin syndrome) [1][2][22].

Case report (Lopez et al., 2014): A 35-year-old woman taking escitalopram (Lexapro) 20 mg daily for over one year developed serotonin toxicity symptoms — tremor, flushing, sweating, stuttering speech, and rapid heartbeat — approximately 1-2 months after starting Garcinia (3,000 mg extract daily, 60% HCA) [22].

Mechanism: Garcinia extract inhibits serotonin reuptake in brain cells, and human studies show a 39.8% increase in serum serotonin after 8 weeks [1]. Because both SSRIs and Garcinia increase serotonin through different mechanisms, the combination may push serotonin to toxic levels. There appears to be a delay in buildup, with toxicity emerging after several weeks of concurrent use [1][22].

Individuals taking SSRIs (escitalopram, sertraline, fluoxetine, paroxetine, citalopram, fluvoxamine) or SNRIs (venlafaxine, duloxetine, desvenlafaxine) should avoid Garcinia cambogia supplements [1][2][22].

Drugs Affecting the Liver

The NCCIH warns that interactions between Garcinia and drugs affecting the liver have been reported [2]. Given the hepatotoxicity signal, concomitant use with other hepatotoxic drugs (e.g., high-dose acetaminophen, statins, certain antibiotics, methotrexate) may compound liver injury risk [2].

Theoretical Interactions

• Diabetes medications (insulin, sulfonylureas, metformin) — HCA may modestly affect blood sugar [2].
• Cholesterol-lowering medications (statins) — potential additive hepatotoxicity risk [2].
• Psychiatric medications beyond SSRIs — mania cases suggest Garcinia affects mood regulation, potentially interacting with mood stabilizers and antipsychotics [27].

Summary of Key Drug Interactions

Drug Class	Interaction Type	Risk Level	Recommendation
SSRIs/SNRIs	Additive serotonergic effect	High	Avoid combination [1][22]
Hepatotoxic drugs	Additive liver injury risk	Moderate-High	Avoid or extreme caution [2][6]
Diabetes medications	Potential blood sugar alteration	Low-Moderate	Monitor blood sugar [2]
Mood stabilizers	Potential mood destabilization	Moderate	Avoid in bipolar disorder [27]
Statins	Additive hepatotoxicity	Moderate	Caution advised [2]

Dietary Sources

Garcinia cambogia is not a nutrient found in typical Western diets. The fruit grows natively in India, Southeast Asia, and Indonesia, where it has traditional culinary uses [1][2].

Traditional Uses

• Culinary: The fruit rind is used as a souring agent in South Asian and Southeast Asian cooking — similar to tamarind or lemon juice. It is a traditional ingredient in fish curries, particularly in coastal India (Kerala, Karnataka, Goa) [2].
• Food preservation: The rind has been used historically as a food preservative [2].
• Traditional medicine: Used as a tea for inflammation and stomach complaints [2].

HCA from Food vs. Supplements

The dried rind naturally contains up to 30% HCA by weight [1]. To obtain 1,200 mg of HCA (the dose in positive trials) from dried rind alone would require approximately 4 grams of dried rind daily. While theoretically possible for those with access to the fruit, this is not practical for most Western consumers.

Related Garcinia Species

Other Garcinia species also contain HCA, though G. cambogia is the primary commercial source. Garcinia indica (Kokum) is used in Indian cuisine with lower HCA levels. Garcinia atroviridis is used in Malaysian cooking. Garcinia mangostana (Mangosteen) is valued for xanthone antioxidants rather than HCA. These species are NOT interchangeable with G. cambogia supplements and have not been studied in the same clinical contexts.

References

1. ConsumerLab. "Garcinia Cambogia and Hydroxycitric Acid (HCA) Supplements Review." Accessed 2025. https://www.consumerlab.com/reviews/garcinia-hydroxycitric-acid-hca-weight-loss/garcinia/

2. National Center for Complementary and Integrative Health (NCCIH). "Garcinia Cambogia." Updated February 2025. https://www.nccih.nih.gov/health/garcinia-cambogia

3. Greenway F. "Garcinia." In: Coates PM, Betz JM, Blackman MR, et al., eds. Encyclopedia of Dietary Supplements. 2nd ed. New York, NY: Informa Healthcare; 2010:307-313.

4. Golzarand M, Omidian M, Toolabi K. "Effect of garcinia cambogia supplement on obesity indices: a systematic review and dose-response meta-analysis." Complementary Therapies in Medicine. 2020;52:102451. https://doi.org/10.1016/j.ctim.2020.102451

5. Maunder A, Bessell E, Lauche R, et al. "Effectiveness of herbal medicines for weight loss: a systematic review and meta-analysis of randomized controlled trials." Diabetes, Obesity & Metabolism. 2020;22(6):891-903. https://doi.org/10.1111/dom.13973

6. Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES). Advisory on Garcinia-containing products. 2020 (updated 2025).

7. Lunsford KE, Bodzin AS, Reino DC, et al. "Dangerous dietary supplements: Garcinia cambogia-associated hepatic failure requiring transplantation." World Journal of Gastroenterology. 2016;22(45):10071-10076. https://doi.org/10.3748/wjg.v22.i45.10071

8. Sharma A, Akagi E, Njie A, et al. "Acute Hepatitis due to Garcinia Cambogia Extract, an Herbal Weight Loss Supplement." Case Reports in Gastrointestinal Medicine. 2018;2018:9606171. https://doi.org/10.1155/2018/9606171

9. Yousaf MN, Chaudhary FS, Hodanazari SM, et al. "Hepatotoxicity associated with garcinia cambogia: a case report." World Journal of Hepatology. 2019;11(11):735-742. https://doi.org/10.4254/wjh.v11.i11.735

10. Westerterp-Plantenga MS, Kovacs EM. "The effect of (-)-hydroxycitrate on energy intake and satiety in overweight humans." International Journal of Obesity. 2002;26(6):870-872. https://doi.org/10.1038/sj.ijo.0801979

11. Loe YC, Bergeron N, Rodriguez N, Schwarz JM. "Gas chromatography/mass spectrometry method to quantify blood hydroxycitrate concentration." Analytical Biochemistry. 2001;292(1):148-154. https://doi.org/10.1006/abio.2001.5046

12. Downs BW, Bagchi M, Subbaraju GV, et al. "Bioefficacy of a novel calcium-potassium salt of (-)-hydroxycitric acid." Mutation Research. 2005;579(1-2):149-162. https://doi.org/10.1016/j.mrfmmm.2005.02.021

13. Heymsfield SB, Allison DB, Vasselli JR, et al. "Garcinia cambogia (hydroxycitric acid) as a potential antiobesity agent: a randomized controlled trial." JAMA. 1998;280(18):1596-1600. https://doi.org/10.1001/jama.280.18.1596

14. Badmaev V, Majeed M, Conte AA. "Garcinia cambogia for weight loss." JAMA. 1999;282(3):233-234. https://doi.org/10.1001/jama.282.3.233

15. Mattes RD, Bormann L. "Effects of (-)-hydroxycitric acid on appetitive variables." Physiology & Behavior. 2000;71(1-2):87-94. https://doi.org/10.1016/S0031-9384(00)00321-8

16. Kovacs EM, Westerterp-Plantenga MS, Saris WH. "The effects of 2-week ingestion of (-)-hydroxycitrate and (-)-hydroxycitrate combined with medium-chain triglycerides on satiety, fat oxidation, energy expenditure and body weight." International Journal of Obesity. 2001;25(7):1087-1094. https://doi.org/10.1038/sj.ijo.0801605

17. Vasques CA, Rossetto S, Halmenschlager G, et al. "Evaluation of the pharmacotherapeutic efficacy of Garcinia cambogia plus Amorphophallus konjac for the treatment of obesity." Phytotherapy Research. 2014;28(11):1640-1645. https://doi.org/10.1002/ptr.5178

18. Chung J, Granja I, Taylor MG, et al. "Molecular modifiers reveal a mechanism of pathological crystal growth inhibition." Nature. 2016;536(7617):446-450. https://doi.org/10.1038/nature19062

19. Fan X, Zhang D, Li H, et al. "Hydroxycitric acid inhibits calcium oxalate monohydrate crystallization in vitro and renal calcium oxalate deposition in vivo." European Review for Medical and Pharmacological Sciences. 2020;24(12):6891-6898. https://doi.org/10.26355/eurrev_202006_21679

20. Yang X, et al. "Hydroxycitric acid and calcium oxalate urolithiasis." Urolithiasis. 2022. https://doi.org/10.1007/s00240-022-01364-5

21. Adiga S, et al. "Effect of Hydroxycitrate on Urinary Risk Factors for Kidney Stone Formation." Poster presentation, Kidney Week 2019, Abstract SA-PO280. American Society of Nephrology.

22. Lopez AM, Kornegay J, Hendrickson RG. "Serotonin toxicity associated with Garcinia cambogia over-the-counter supplement." Journal of Medical Toxicology. 2014;10(4):399-401. https://doi.org/10.1007/s13181-014-0390-7

23. Crescioli G, Lombardi N, Bettiol A, et al. "Acute liver injury following garcinia cambogia weight-loss supplementation: case series and literature review." Internal and Emergency Medicine. 2018;13(6):857-872. https://doi.org/10.1007/s11739-018-1880-4

24. Ballotin VR, Bigarella LG, de Mello Brandão AB, et al. "Herb-induced liver injury: systematic review and meta-analysis." World Journal of Clinical Cases. 2021;9(20):5490-5513. https://doi.org/10.12998/wjcc.v9.i20.5490

25. Ferreira V, Mathieu A, Soucy G, et al. "Acute severe liver injury related to long-term garcinia cambogia intake." ACG Case Reports Journal. 2020;7(8):e00429. https://doi.org/10.14309/crj.0000000000000429

26. Garcinia cambogia. LiverTox: Clinical and Research Information on Drug-Induced Liver Injury [Internet]. National Institute of Diabetes and Digestive and Kidney Diseases. Updated February 13, 2019. https://www.ncbi.nlm.nih.gov/books/NBK548087/

27. Hendrickson BP, et al. "Mania Associated with Garcinia Cambogia." Primary Care Companion for CNS Disorders. 2016;18(5). https://doi.org/10.4088/PCC.16l01963

28. Saito M, Ueno M, Ogino S, et al. "High dose of Garcinia cambogia is effective in suppressing fat accumulation in developing male Zucker obese rats, but highly toxic to the testis." Food and Chemical Toxicology. 2005;43(3):411-419. https://doi.org/10.1016/j.fct.2004.11.008

29. Mena-García A, Bellaizac-Riascos AJ, Rada-Mendoza M, et al. "Quality Evaluation of Dietary Supplements for Weight Loss Based on Garcinia cambogia." Nutrients. 2022;14(15):3077. https://doi.org/10.3390/nu14153077

30. Office of Dietary Supplements. "Dietary Supplements for Weight Loss: Fact Sheet for Health Professionals." National Institutes of Health. Accessed 2025. https://ods.od.nih.gov/factsheets/WeightLoss-HealthProfessional/

31. Garcinia. NatMed Pro website. Accessed at naturalmedicines.therapeuticresearch.com on November 3, 2023. [Database subscription].