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A member asked:

Can using a retinol serum cause an overdose of vitamin a inside the body? is it safe for me to take a multivitamin that has 89% vitamin a already while using a retinol serum? i also get vitamin a from my diet as well?

A doctor has provided 1 answer

No: I would suggest that you stay within the recommended daily dosage for Vitamin A. Vitamin A,D,E, and K are fat soluble. Any excess is not excreted in the urine.

Answered 1/31/2021

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