Acyclovir - Started June 9 2011

I started Acyclovir 400 mg. last night June 9 2011 (a white pill). I took it with food as recommended. I woke up in the night with an awful gut ache. Couldn't find the Prilosec and I had to wake Jani up to find it. I took the Prilosec and the ache subsided. I also have a bit of headache and left-sided neck pain this morning, but Jani thinks that might be because I fell asleep in the recliner at PET Imaging with my neck in a weird position.

I'm taking the Acyclovir to prevent a recurrence of shingles which I first had in August 2009 even though I had the live shinges vaccine May 2010. Here is a picture of the shingles I had in 2009 on my right lower back about 9 days after they broke out  - very PAINFUL.
Shingles are caused by the chickenpox virus (varicella) that remains in your body after you've had chickenpox (I had them as a child when I lived in Mountain Home, Idaho circa 1956). Then, when your immune system is depressed for any reason, the virus can re-appear as painful shingles (usually demonstrated by skin lesions, but can also be internal).