Jenjen77 1 Posted December 15, 2016 Eek. I had a horrible canker sore yesterday so I took a valtrex and lysine. I woke up this am with a pimple and my skin has been pretty clear lately. Wondering if either the lysine or valtrex could cause acne?! Quote Share this post Link to post Share on other sites
nicmic62 679 Posted January 13, 2017 I doubt what you took is the cause. Pimples don't pop out that quickly. Usually it takes about a week or so for the pimple to come to the surface. Quote Share this post Link to post Share on other sites
Adeel2111 32 Posted January 13, 2017 Try vaseline, better and safer imo. Quote Share this post Link to post Share on other sites
Exning 38 Posted January 15, 2017 I doubt its the cause as well, unless maybe youre allergic to a filler they added? Lysine usually helps some for acne, its just an amino acid Quote Share this post Link to post Share on other sites
