Lycopene: Benefits, Forms, Dosing, and Side Effects

Table of Contents

• Current view (reviewed 23 October 2026)
• Key safety points
• Brad's videos on this topic
• Overview
• Forms and Bioavailability
• Evidence for Benefits
• Recommended Dosing
• Safety and Side Effects
• Drug Interactions
• Dietary Sources
• References

Current view (reviewed 23 October 2026)

Brad's Health Roadmap lists lycopene in its micronutrient base, alongside methylated B vitamins, vitamin D3 with K2, magnesium taurate, glycinate trace minerals, lutein with zeaxanthin, and TMG (Brad's current guidance, 22 Oct 2026). His guidance cites a meta-analysis of 21 tomato and lycopene intervention trials in which lycopene supplements lowered systolic blood pressure by 5.66 mmHg but did not significantly change blood lipids (Brad's current guidance, 25 Oct 2026). It cites an earlier meta-analysis too, in which lycopene at 25 mg a day or more lowered LDL cholesterol by 10.35 mg/dL, while lower doses had no significant effect (Brad's current guidance, 25 Oct 2026). It also cites a larger meta-analysis of 42 studies with 692,012 participants, in which higher dietary lycopene intake was associated with lower prostate cancer risk (RR 0.88, 95% CI 0.78 to 0.98), with risk about 1% lower for each extra 2 mg a day (Brad's current guidance, 14 Oct 2026).

Brad's videos on this topic

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1. Overview

Lycopene is a red, fat-soluble carotenoid. It has no provitamin A activity, so the body cannot make vitamin A from it ^[26]. In lab tests it quenches singlet oxygen faster than any other carotenoid tested, including beta-carotene, and far faster than alpha-tocopherol (vitamin E) ^[1].

Lycopene gives tomatoes and pink grapefruit their colour, and processed tomato products are the main source in the US diet ^[6]. Watermelon, papaya and guava also contain it ^[8]. In one large US cohort, tomatoes, tomato sauce, tomato juice and pizza supplied 82% of lycopene intake ^[38].

Reviews describe antioxidant, anti-inflammatory, antihypertensive and antiplatelet effects, drawing on lab, animal, observational and clinical studies, and note that the results are sometimes inconsistent ^[8]. Lycopene and its breakdown products switch on the Nrf2 system, which controls the body's own antioxidant enzymes, in cell studies ^{[7, 62]}.

Safety studies of synthetic lycopene in rats found low toxicity and a large margin of safety ^[65]. In a human trial, doses from 15 to 120 mg a day for one year were safe and well tolerated ^[66].

2. Forms and Bioavailability

Isomer Forms

Tomatoes and tomato foods contain mainly all-trans lycopene, but more than half of the lycopene in human blood and tissues is in cis forms ^[17]. In one trial, supplements that were over 90% all-trans lycopene raised blood lycopene that was 60% cis ^[22].

In ferrets, cis lycopene was absorbed better than all-trans lycopene, probably because cis forms dissolve more easily in bile acid micelles ^[17]. Heating tomatoes released more extractable lycopene and raised their total antioxidant activity ^[16]. This is why processed tomato products tend to deliver more lycopene than raw tomatoes.

Inside the plant tissue, lycopene is generally stable during processing ^[6]. Pure crystalline lycopene is different: stored badly and exposed to light and air, it can break down into mutagenic products, so commercial forms include antioxidants to prevent this ^[65].

Supplement Forms

Lycopene supplements are available in several forms:

• Tomato oleoresin extracts: Lyc-O-Mato, a tomato extract, has been used in several trials, including a blood pressure trial that used 250 mg of the extract ^[50] and a trial in men before prostate surgery ^[45]. These extracts also contain other tomato carotenoids ^[50].

• Whole tomato food supplements: One trial in men with advanced prostate cancer used a lycopene-rich tomato supplement providing 15 mg of lycopene twice a day ^[67].

• Synthetic lycopene: Made by chemical synthesis and sold in formulated beadlets that contain antioxidants ^[65]. Purified lycopene raised blood lycopene at every dose tested: 6.5, 15 and 30 mg a day ^[68].

• LactoLycopene: Lycopene bound to whey protein. At 25 mg a day for 8 weeks, it raised blood lycopene as much as tomato paste did, but not more ^[22]. It was also used in a sperm quality trial ^[23].

• Tomato nutrient complex: A lycopene-rich tomato nutrient complex was used in a UV skin trial ^[24], and a tomato extract called Lycomato in a skin appearance study ^[75].

Key Factors Affecting Absorption

Lycopene concentrations vary widely between tissues, from about 1 nmol/g in fat tissue to up to 20 nmol/g in the adrenal glands and testes ^[26].

Fat co-consumption is critical. In a crossover study of 11 healthy adults, adding 150 g of avocado to tomato salsa gave 4.4 times the lycopene absorption of salsa alone ^[28].

The type of fat matters. In a crossover trial of 16 adults eating the same salad, lycopene absorption was 45.8% higher when the salad came with olive oil rather than coconut oil ^[29].

Calcium supplements can reduce lycopene absorption. In a crossover study of 10 healthy adults, adding 500 mg of calcium carbonate, which the authors call a nutritional dose, to a meal providing 19 mg of lycopene in tomato paste cut lycopene bioavailability by 83% ^[30]. In lab digestion models, calcium, magnesium, zinc and iron all reduced how much carotenoid could be taken up, with iron and zinc having the strongest effects ^{[31, 32]}. Taking a lycopene supplement at a different meal from mineral supplements may help.

Processing substantially enhances bioavailability from food. Heat-treated tomatoes released more lycopene than raw tomatoes ^[16]. LactoLycopene and tomato paste gave similar blood lycopene levels when both provided 25 mg a day ^[22].

Dr Brad Stanfield's MicroVitamin includes 10 mg of lycopene and 10 mg of lutein — carotenoids that accumulate in the retina and support macular pigment density — alongside 25 other evidence-based ingredients in a single daily serving. While these are lower doses than used in cancer or cardiovascular studies, they contribute to daily carotenoid intake alongside dietary sources.

3. Evidence for Benefits

Cancer Prevention

Overview of Observational Evidence

Most of the evidence on lycopene and cancer comes from observational studies of tomato intake or blood lycopene, which cannot prove cause and effect. A 1999 review found 72 such studies; 57 reported lower cancer risk with more tomato intake or higher blood lycopene, and 35 of these results were statistically significant ^[36]. The evidence was strongest for cancers of the prostate, lung and stomach, and the author noted that other compounds in tomatoes may contribute ^[36].

In its 2007 review, the US Food and Drug Administration found no credible evidence that lycopene intake lowers the risk of prostate, lung, colorectal, gastric, breast, ovarian, endometrial or pancreatic cancer ^[34]. It also found no credible evidence that eating tomatoes lowers the risk of lung, colorectal, breast, cervical or endometrial cancer, and very limited evidence that tomato consumption lowers the risk of prostate, ovarian, gastric and pancreatic cancers ^[34].

Prostate Cancer

Prostate cancer has been the most extensively studied cancer type in relation to lycopene. The observational evidence suggests a modest association, and it comes mostly from diet, not supplements.

In a cohort of 47,894 US male health professionals, men with the highest lycopene intake were less likely to develop prostate cancer than men with the lowest (RR 0.79, 95% CI 0.64 to 0.99) ^[38]. Eating tomato foods more than 10 times a week, compared with less than 1.5 times, was linked with lower prostate cancer risk (RR 0.65, 95% CI 0.44 to 0.95) and of advanced prostate cancer (RR 0.47, 95% CI 0.22 to 1.00) ^[38].

A 2016 meta-analysis of 24 studies found tomato intake was linked with lower prostate cancer risk (RR 0.86, 95% CI 0.75 to 0.98), but not in cohort studies alone (RR 0.96, 95% CI 0.84 to 1.10), and it found signs of publication bias; the authors concluded that "tomato intake may have a weak protective effect against prostate cancer" ^[39]. A 2013 meta-analysis of prospective studies found that higher lycopene intake was not clearly linked with lower risk (OR 0.93, 95% CI 0.86 to 1.01) ^[40]. A 2017 meta-analysis of 42 studies found lower risk with higher dietary lycopene (RR 0.88, 95% CI 0.78 to 0.98), but no link with advanced prostate cancer ^[76].

Supplementation Studies in Prostate Cancer

A few small but notable interventional studies have examined lycopene supplementation directly in men with prostate conditions:

In 40 men with high-grade prostatic intraepithelial neoplasia, a precancerous change, those given 4 mg of lycopene twice a day for one year were compared with men who were only followed up; the authors reported that lycopene could delay or prevent progression to cancer ^[44]. The trial had no placebo.

In 26 men with localised prostate cancer, 15 mg of lycopene twice a day as Lyc-O-Mato for 3 weeks before surgery was linked with more cancers confined to the prostate (73% vs 18%), while smaller tumours and lower PSA did not reach statistical significance ^[45]. The authors said no firm conclusions could be drawn because the trial was small ^[45].

In men whose PSA had risen again after treatment for prostate cancer, lycopene at 15 to 120 mg a day for one year produced no PSA responses ^[66]. In men with advanced prostate cancer no longer responding to hormone treatment, a tomato supplement giving 15 mg of lycopene twice a day did not appear effective ^[67].

Oral Leukoplakia

In a trial of 58 people with oral leukoplakia, white patches in the mouth that can turn cancerous, 8 mg or 4 mg of lycopene a day for three months gave mean clinical responses of 80% and 66.25%, compared with 12.5% on placebo ^[46].

Lung and Breast Cancer

In the 1999 review of observational studies, the evidence for tomatoes and lung cancer was among the strongest, while the data for breast cancer were only suggestive ^[36]. The FDA found no credible evidence that either lycopene intake or tomato consumption lowers the risk of lung or breast cancer ^[34].

Cardiovascular Health

Cholesterol Reduction

A 2011 meta-analysis of 12 trials found that lycopene at 25 mg a day or more lowered total cholesterol by 7.55 mg/dL and LDL cholesterol by 10.35 mg/dL, while lower doses had no significant effect ^[49]. The authors compared the roughly 10% fall in LDL with low-dose statins in people with slightly raised cholesterol, and called for more research ^[49].

A 2017 meta-analysis found that tomato products, rather than lycopene supplements, lowered LDL cholesterol by 0.22 mmol/L ^[51]. In a 2-month trial, 7 mg of lycopene a day did not change blood lipids ^[9].

Blood Pressure

A 2017 meta-analysis of 21 trials of tomato products or lycopene found that lycopene supplements lowered systolic blood pressure by 5.66 mmHg ^[51]. An earlier meta-analysis of four trials found a fall of 5.60 mmHg and called for more research ^[49].

In a single-blind pilot trial of 31 adults with grade 1 hypertension, 250 mg of tomato extract (Lyc-O-Mato) during an 8-week treatment period lowered systolic blood pressure from 144 to 134 mmHg and diastolic from 87.4 to 83.4 mmHg, with no change during placebo periods ^[50]. The extract did not change blood lipids ^[50]. In another trial, 7 mg of lycopene a day for 2 months did not change blood pressure or arterial stiffness ^[9].

Cardiovascular Risk Reduction from Dietary Sources

In a cohort of 39,876 middle-aged and older women, dietary lycopene was not strongly linked with cardiovascular disease ^[52]. Women eating tomato-based foods 7 to less than 10 times a week had a lower risk than those eating them less than 1.5 times (RR 0.68, 95% CI 0.49 to 0.96), but the result for 10 or more times a week was not significant (RR 0.71, 95% CI 0.42 to 1.17) ^[52].

In a randomised trial, 7 mg of lycopene a day for 2 months improved endothelial function by 53% in people with cardiovascular disease taking statins, but not in healthy volunteers ^[9].

Inflammation and Heart Failure

In a pilot trial in 40 people with heart failure, drinking vegetable juice that provided 29.4 mg of lycopene a day for 30 days lowered C-reactive protein (CRP) in women but not men ^[54]. This was a juice, not a lycopene supplement. In the 2017 meta-analysis, tomato and lycopene interventions did not significantly change CRP ^[51].

Reviews also list antiplatelet effects among lycopene's actions (see Drug Interactions) ^[8].

Benign Prostatic Hyperplasia (BPH)

Lycopene is sometimes promoted for enlarged prostate (benign prostatic hyperplasia or BPH), but the evidence comes from one small pilot trial.

In a 6-month pilot trial, 40 men with BPH took 15 mg of lycopene a day or placebo. PSA fell in the lycopene group, and the prostate did not enlarge, while it grew in the placebo group; symptoms improved in both groups, more so with lycopene ^[21].

Male Infertility

Oxidative damage harms sperm, and lycopene is a strong antioxidant. A 2014 review reported that human trials of 4 to 8 mg of lycopene a day for 3 to 12 months improved sperm measures and pregnancy rates, though more research is needed to settle the dose and benefit ^[55].

In a placebo-controlled trial, 60 healthy young men were randomised to 14 mg a day of LactoLycopene or placebo for 12 weeks, and 56 completed it ^[23]. Motile sperm concentration did not change significantly, but the proportion of fast-moving sperm and of normally shaped sperm improved ^[23].

Skin Protection

UV Damage Prevention

Carotenoids taken by mouth are stored in body fat and slowly released onto the skin in sweat and sebum ^[56].

In a randomised trial, 20 healthy women ate 55 g of tomato paste (16 mg of lycopene) in olive oil, or olive oil alone, daily for 12 weeks ^[57]. The tomato paste group had less UV-induced reddening on one measure, although the minimal erythema dose did not differ significantly, and showed less UV-induced collagen-degrading enzyme and mitochondrial DNA damage ^[57].

In a double-blind crossover trial of 65 healthy volunteers, 12 weeks of a lycopene-rich tomato nutrient complex blocked UV-induced increases in three skin genes that the authors use as markers of oxidative stress and photoageing ^[24].

A review notes that lycopene and beta-carotene reduce UV-induced reddening after about 10 to 12 weeks of intake ^[58].

Wrinkle Reduction

In a 3-month study, 50 women all took a tomato extract (Lycomato), with no placebo group; skin barrier function improved, and expert graders and the women rated lines and wrinkles as improved ^[75].

Metabolic Health

Human trials do not yet show that lycopene supplements improve blood sugar or weight. In an 8-week trial, purified lycopene at 6.5, 15 or 30 mg a day did not change blood glucose or the lipid profile ^[68].

Antioxidant Mechanisms

Lycopene exerts its antioxidant effects through multiple distinct pathways:

• Singlet oxygen quenching: Lycopene has the highest singlet oxygen quenching rate of the carotenoids tested. Because blood levels differ, its total quenching capacity in plasma is of similar size to that of beta-carotene and alpha-tocopherol ^[1].

• Free radical scavenging: Carotenoids scavenge singlet oxygen and peroxyl radicals and work together with other antioxidants; mixtures are more effective than single compounds ^[61].

• Nrf2 pathway activation: In cancer cells, lycopene activated the antioxidant response element and moved Nrf2 into the nucleus, raising levels of protective phase II enzymes ^[62]. Lycopene breakdown products had a similar effect in human lung cells ^[7].

Other Potential Uses

A randomised trial tested 2 mg of lycopene a day to prevent pre-eclampsia in first pregnancies; it found no benefit and more adverse effects (see Safety and Side Effects) ^[69].

4. Recommended Dosing

An optimal dosage for lycopene supplementation has not been established. Trials cited here used from 2 mg a day, in pregnancy ^[69], to 120 mg a day, the highest dose in a prostate cancer trial ^[66].

Dosing by Indication

Practical Dosing Guidance

• Always take with dietary fat. Avocado and olive oil both raised lycopene absorption in controlled studies ^{[28, 29]}.
• Olive oil is the preferred fat source. Lycopene absorption was 45.8% higher when a salad came with olive oil rather than coconut oil ^[29].
• Separate from mineral supplements. 500 mg of calcium carbonate taken with a lycopene-rich meal cut lycopene bioavailability by 83%, and lab studies show similar effects for magnesium, zinc and iron ^{[30, 31, 32]}. Take lycopene at a different meal from mineral supplements.
• Dietary sources may be sufficient for general health. Lycopene from cooked tomato products is readily absorbed ^[16], and tomato-based foods were linked with lower prostate cancer risk in an observational study ^[38].
• Higher doses may add little. Blood lycopene levels were similar across doses from 15 to 90 mg a day ^[66].
• Supplements and tomato paste give similar blood levels. LactoLycopene and tomato paste at 25 mg a day raised blood lycopene equally ^[22].

How to Read a Supplement Label

Most lycopene supplements contain standardized tomato extracts. The Supplement Facts panel should list the amount of lycopene per serving, not the weight of the total tomato extract. In the blood pressure trial above, for example, the dose was given as 250 mg of tomato extract ^[50], which is not the same as 250 mg of lycopene.

For synthetic lycopene supplements, the listed amount typically reflects pure lycopene content directly. Check whether the dose is listed per capsule or per serving (which may be multiple capsules).

5. Safety and Side Effects

General Tolerability

Trials have found lycopene supplements well tolerated at the doses tested. In men with prostate cancer, doses from 15 to 120 mg a day for one year were safe, with mild side effects ^[66]. In healthy adults, 6.5, 15 or 30 mg a day of purified lycopene for 8 weeks raised blood lycopene without changing glucose or lipids ^[68].

In pregnancy, a randomised trial gave 159 healthy women in their first pregnancy 2 mg of lycopene or placebo daily, starting at 12 to 20 weeks and continuing until delivery ^[69]. Lycopene did not prevent pre-eclampsia (18.18% vs 18.29%), and preterm labour (10.39% vs 1.22%) and low-birthweight babies (22.08% vs 9.76%) were more common in the lycopene group ^[69]. Until more is known, avoid lycopene supplements in pregnancy unless your doctor advises them.

In rats, synthetic lycopene caused no significant toxicity at up to 500 mg/kg body weight a day for 14 weeks, was not genotoxic, and caused no birth defects ^[65].

Gastrointestinal Symptoms

In a trial of 46 men whose lycopene-rich tomato supplement provided 15 mg of lycopene twice a day, diarrhoea (18 men), nausea (12) and abdominal swelling (8) were the most common side effects, and one man had grade 4 diarrhoea ^[67]. In a dose-escalation trial, one of 36 men stopped because of diarrhoea ^[66].

Allergic Reactions

Severe allergic reactions to tomatoes are rare ^[70]. In one report, two adults had throat swelling after eating tomatoes, and one had anaphylaxis ^[70]. If you have throat swelling, trouble breathing or other signs of anaphylaxis, call your local emergency number (111 in NZ, 000 in Australia, 911 in the US, 999 in the UK).

Lycopenodermia (Skin Discoloration)

Carotenoderma is a yellow-orange colouring of the skin, often on the palms, soles and the folds beside the nose, caused by high blood carotenoid levels, usually from eating large amounts of carotenoid-rich foods ^[73]. It is benign and harmless ^[73]. A 2022 case report described carotenoderma caused by high blood lycopene after eating large amounts of lycopene-rich vegetables and fruit ^[73].

Long-Term Safety

Most trials of lycopene supplements lasted weeks to months, and the longest ran for one year ^{[44, 66]}. Long-term safety at high doses is not well studied.

6. Drug Interactions

Blood-Thinning Medications

A review notes antiplatelet activity in living organisms and in the lab, and that lycopene may strengthen aspirin's antiplatelet effect; because of the potential bleeding risk, it advises a low-lycopene diet for people taking aspirin to prevent another heart attack or stroke ^[8]. Take care when combining lycopene supplements with blood-thinning medicines, including:

• Aspirin
• Warfarin (Coumadin)
• Clopidogrel (Plavix)
• Heparin and low-molecular-weight heparins
• Other anticoagulant and antiplatelet agents
• NSAIDs with significant antiplatelet activity (ibuprofen, naproxen)

Patients on anticoagulant or antiplatelet therapy should inform their healthcare provider before starting lycopene supplementation and monitor for any signs of increased bruising or bleeding.

Statin Drugs and Lipid-Lowering Therapy

Lycopene at 25 mg a day or more lowered LDL cholesterol modestly in trials ^[49]. If you take prescription medicines, check with your doctor or pharmacist before starting.

Calcium Supplements

As detailed in the Forms and Bioavailability section, 500 mg of calcium carbonate cut lycopene bioavailability from a tomato meal by 83% ^[30]. This is a pharmacokinetic interaction affecting absorption rather than a pharmacodynamic drug interaction. Take lycopene and calcium supplements at different meals.

Other Mineral Supplements

In lab digestion studies, magnesium, zinc and iron, like calcium, reduced how much carotenoid could be absorbed ^{[31, 32]}. If you take mineral supplements, take them at a different meal from lycopene or other carotenoid supplements.

7. Dietary Sources

Lycopene is found in red and pink fruits and vegetables, including tomatoes, watermelon, papaya, pink grapefruit and guava ^{[6, 8]}. Processed tomato products are the main source in the US diet ^[6].

Lycopene Content of Common Foods

Amounts vary widely between foods, varieties and products. USDA FoodData Central lists lycopene values for individual foods ^[5].

Tips for Maximizing Dietary Lycopene Absorption

• Cook your tomatoes. Heat-treated tomatoes released more lycopene than raw ones ^[16].

• Add olive oil. Eaten with a salad, olive oil gave 45.8% more lycopene absorption than coconut oil ^[29].

• Avocado boosts absorption. Adding 150 g of avocado to tomato salsa gave 4.4 times the lycopene absorption in one controlled study ^[28].

• Do not take calcium supplements with lycopene-rich meals. 500 mg of calcium carbonate cut lycopene bioavailability from a tomato paste meal by 83% ^[30].

Regional Intake Patterns

In the Health Professionals Follow-up Study in the US, tomatoes, tomato sauce, tomato juice and pizza supplied 82% of lycopene intake ^[38].