Deworming Schedule: 2 weeks, 4 weeks & 6 weeks of age At vaccinations intervals again, 8 weeks, 12 weeks & 6 months of age Thereafter, 1 – 3 times a year. Gastrointestinal Parasites GI parasites are a very common ailment in kittens, and should be combatted through standard preventative measures and proactive treatment as needed. […]