Beta-Carotene
vitamins
Beta-carotene is a fat-soluble carotenoid that the body converts to vitamin A as needed. It functions as a potent antioxidant and supports eye health, immune function, and skin protection.
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Benefits
Dosage
Typical Dose
3-6 mg daily
Upper Limit
15 mg daily (avoid excessive intake from supplements)
Timing
With a fat-containing meal for optimal absorption
Forms & Bioavailability
Natural beta-carotene (from algae or plant sources)
85-90%
Synthetic beta-carotene
70-80%
Beta-carotene with mixed carotenoids
80-90%
Side Effects
Interactions
Research Summary
Multiple clinical trials, including the CARET and ATBC studies, have evaluated beta-carotene supplementation for disease prevention with mixed results. Evidence strongly supports beta-carotene's role in maintaining eye health and supporting immune function, though supplementation provides minimal additional benefit in people with adequate dietary intake. Current research suggests obtaining beta-carotene from whole foods rather than high-dose supplements is the safest approach.
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The Bottom Line on Beta-Carotene
Beta-Carotene is well-researched with strong evidence supporting its primary benefits.It is most commonly used for supports vision and eye health and antioxidant protection against free radicals. As with any supplement, individual results vary. Start with the lower end of the dosage range and assess for 4-8 weeks before adjusting.
About Our Research
This profile is compiled from peer-reviewed research published on PubMed, the NIH Office of Dietary Supplements, and established nutritional science databases. Dosages reflect clinically-studied amounts from human trials where available. We update profiles as new research emerges. This is not medical advice — consult a healthcare professional before supplementing.
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Goal Guides for Beta-Carotene
See how Beta-Carotene can help with specific health goals: