Official resources
Fact sheets from the NIH Office of Dietary Supplements related to this ingredient group.
- Vitamin A (ClinicalTrials.gov)
- Vitamin A — Health Professional Fact Sheet (ODS)
- Vitamin A - Clinical trials (PubMed)
- Vitamin A - Dose and administration (PubMed)
- Vitamin A - Adverse effects (PubMed)
- Vitamin A - Contraindications (PubMed)
- Vitamin A - Mechanism of action (PubMed)
- Vitamin A - Kinetics (PubMed)
- Vitamin A - Poisoning (PubMed)
- Vitamin A - Dietary supplement use in human (PubMed)
- Vitamin A (MedlinePlus Supplements)
Dietary Supplement Label Database
Ingredient group data in NutriNav is aligned with the NIH Dietary Supplement Label Database (DSLD).
- DSLD group id
- 201
Compare All Forms
1 formCompare supplement forms of Vitamin A by absorption quality and what your body actually gets from each:
Type: Vitamins
Organic compounds essential for normal growth and nutrition. Required in small quantities in the diet because they cannot be synthesized by the body.
Absorption: Fat-soluble vitamins require dietary fat for absorption. Water-soluble vitamins are generally well-absorbed but excess amounts are excreted.
Interactions: Some vitamins can interfere with medications. Fat-soluble vitamins can accumulate in the body.