Infant Fever Relief Suppositories 80mg for Ages 6 to 36 Months 6 Count 6 Rectal Suppositories 80mg each for infants 6 to 36 months. Temporarily reduce fever and relieve minor aches, pain and headaches. For infants 6 to 36 months use 1 suppository every 6 hours (Maximum of 5 doses in 24 hours).