WiBo Health

Vitamin A (Retinyl Palmitate & Beta-Carotene)

Vision, immunity & skin

Function & benefits

Vitamin A contributes to the maintenance of normal vision, normal immune function, normal mucous membranes and skin, and cell specialisation (EFSA-authorised claims); it is part of rhodopsin, the pigment for vision in dim light.

Dosage & how to use

Recommended dose800–1500 µg RAE daily (about 2700–5000 IU)
Best time to takeWith a meal that contains fat
FrequencyOnce daily

Best forms to choose

A combination of retinol (retinyl palmitate) with natural mixed carotenoids, as the body converts beta-carotene into vitamin A only when needed.

Important warnings

The EFSA upper limit for retinol is 3000 µg a day; pregnant women must not exceed safe doses because of the risk of birth defects

High-dose isolated beta-carotene supplements raise the risk of lung cancer in smokers (ATBC and CARET trials)

Excess causes hair loss, dry skin and liver strain

Drug interactions

Dangerous interaction: never combine it with vitamin A-derived acne and psoriasis drugs (isotretinoin, acitretin), to avoid vitamin A toxicity.

View in the supplements guide

Related supplements

Scientific references

  1. EFSA Journal 2015;13(3):4028 (Dietary Reference Values for vitamin A)
  2. NIH Office of Dietary Supplements (ODS): Vitamin A and Carotenoids Fact Sheet
  3. Omenn GS et al. (CARET). N Engl J Med 1996 — PMID: 8602180
📚 Published sources and research: European Food Safety Authority (EFSA) • National Institutes of Health (NIH - ODS) • PubMed / Cochrane databases

Content last updated: 17 October 2026 · Based on published sources and research (EFSA / NIH / PubMed)

⚖️ Medical disclaimer: The information and data provided here are for health education and nutritional guidance only. They are not a medical diagnosis and never replace a direct consultation with your doctor or pharmacist. Always consult your doctor before starting any supplement, especially during pregnancy or breastfeeding or when taking long-term medication.