Does Applying Products Containing Tretinion Topically Count Towards RDA of Vitamin A?
asked 1 year ago by three in uk
Latest answer by Bryan K. Chen, MD
Question viewed 126 times
Tags: diet, tretinoin, vitamin a
I think the recommended daily allowance of vitamin A taken internally is 1.5mg. But when I use products like Retin - A, which is in cream form applied topically, should I take that into consideration too in making sure that I dont exceed my daily allowance of vitamin A? Doesn't that also get absorbed by my body?
2 answers to Does Applying Products Containing Tretinion Topically Count Towards RDA of Vitamin A?
+2
Tretinoin and vitamin A
Interesting question. Tretinoin and vitamin A are related compounds, but not identical. A certain (small) percentage of Vitamin A is converted to tretinoin by the body. Applying tretinoin topically, however, should have no bearing on vitamin A supplementation.
Bryan K. Chen, MD
San Diego Dermatologist
San Diego Dermatologist
+2
Applying Retin A does not go towards the recommended daily allowance for vitamin A
Taking oral retinoids and vitamin A together, on the other hand, may result in symptoms of excess vitamin A (hypervitaminosis A). So when taking oral retinoids, check your vitamins to make sure you are not taking extra vitamin A.
