Supplement analysis backed by scientific evidence · PT

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Limited evidenceHeart & metabolic

Lycopene

The carotenoid behind the tomato-and-prostate story, where the intervention trials have been consistently negative. There is a small, dose-dependent blood-pressure signal, but eating tomatoes beats buying an extract.

What the science says

  • Prostate cancer Limited evidence

    A systematic review and meta-analysis of randomized trials found lycopene supplementation did not significantly affect PSA in men with non-metastatic prostate cancer. Observational dose-response meta-analyses do show lower prostate cancer risk with higher tomato and lycopene intake, but every attempt to reproduce that with a supplement has failed — this is the classic pattern of a food effect being misattributed to a single molecule.

  • Blood pressure Limited evidence

    A network meta-analysis of tomato, lycopene and related products found blood-pressure reductions concentrated in trials using higher doses (roughly above 12-25 mg/day) and in participants with elevated baseline BP, with systolic reductions of a few mmHg. An earlier meta-analysis of intervention trials reached a similar conclusion: an effect only in hypertensive subgroups at higher doses, and nothing in normotensive people.

  • Lipids and cardiovascular risk Limited evidence

    Effects on LDL, HDL and triglycerides are small and inconsistent across trials; a 2026 meta-analysis of tomato and tomato-derived products on cardiometabolic health found modest and heterogeneous benefits that were hard to attribute to lycopene specifically rather than to the whole food matrix.

  • Skin photoprotection Limited evidence

    Small trials of tomato paste or lycopene supplementation report a modest increase in minimal erythema dose (roughly equivalent to SPF 1-2 after 10-12 weeks). This is real but trivially small and is not a substitute for sunscreen.

Dosage & safety

Studied doseTrials have used 5-30 mg/day, most commonly 15-25 mg/day for 8-12 weeks; blood pressure effects appear only at the higher end. Lycopene is fat-soluble and far more bioavailable from cooked, processed tomato products than from raw tomatoes — heat and oil convert it to the better-absorbed cis isomers, so tomato paste, sauce or juice with olive oil is a more effective delivery vehicle than a raw tomato and arguably than a capsule. Two tablespoons of tomato paste supply roughly 15-20 mg.
SafetyVery safe at dietary and supplemental doses; the main effect of chronic high intake is lycopenodermia, a harmless orange discoloration of the skin that resolves on stopping. Mild GI upset can occur. Lycopene has mild antiplatelet and blood-pressure-lowering activity, so combine cautiously with antihypertensives and anticoagulants and stop before surgery. High-dose supplements in pregnancy are not recommended — one trial of lycopene supplementation in pregnancy reported higher rates of preterm birth and low birth weight — though dietary tomato intake is fine. As with beta-carotene, isolated high-dose carotenoid supplementation has a poor historical track record in cancer prevention trials, so there is no reason to exceed dietary-equivalent doses.

Scientific references

Where to buy

Swanson Vitamins, Lyc-O-Mato® Lycopene, 20 mg, 60 Softgels

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