Please Be Aware - medical needs vary by location, always consult you veterinarian for specifics, but these links have good general information and sources for medications and supplies.
Herd health calendar from Alpacas de la Flor, another alpaca ranch in the Skagit Valley of Washington State. This is what they do for boarded animals, but is great info for animals kept at home : http://www.alpacare.com/health.htm
OSU's Camelid Health Topic Page : If you have a health related topic regarding camelids, it is probably covered in these 3 pages. Everything from abdominal pain to urinary stones. http://vet.osu.edu/350.htm
This page has a bit of this and that, but the write up about Vitamin D is essential information to those of us in the northern part of the US. http://www.fantasyfarms.com/tips.htm
There are many ways to restrain your alpaca for medical procedures. Here is a plan for a "homemade" alpaca chute - haven't had a chance to make one yet, but other breeders have said they have had good luck with it. http://www.autumnstaralpacas.com/Chute.aspx
This page has some llama related article links along the left side - health indicators in your llama, BVDV in camelids and Red Blood Cells in Llamas are all interesting articles. If I am able to figure out how to get to more issues of this e-magazine, I will post more links.