Please click on the following link
for the current vaccination protocol from AAEP:
http://www.aaep.org/pdfs/AAEP_vacc_guide.pdf

Adult Horse Deworming Schedule

Anthelcide- January & July
Strongid- March & September
Ivermectin- May
Ivermectin/Praziquantel- November

Foals should be dewormed with Strongid or Anthelcide monthly beginning at one month of age. At six months of age they can join the adult horse deworming schedule.