http://www.medications.com/effect/view/41832 I am currently taking the z-pak, on my third day. Today I woke up with white "pockets" under my tongue. Thinking about not taking any more. They are very painful. Hurts to eat or drink. I've taken this before but never with this kind of reaction. Sat, 06 Jun 2009 14:06:52 -0400 http://www.medications.com/effect/view/41832?item=20418 This "medication" is a real toxin. I have been prescribed z-pack for severe cough and light fever. A day before I saw the doctor I took some supplement for my skin which had a lot of vit A. I asked the doctor if he wanted me to stay away from the sup http://www.medications.com/effect/view/41832?item=20418