Is it safe to take a hair, skin, and nails pill, while I am taking doxycycline 100mg for my acne?

Antibiotics & Supps. Best to check with your prescribing physician or dispensing pharmacist. Let them know the pill you want to take and they can make sure they are no interactions.
Pill. What is the name of the hair, skin, and nails pill? Or, please list the ingredients so we can better answer your question.