Usual Adult Dose for Onchocerciasis. 0.15 mg/kg orally once every 12 months Patients with heavy ocular infection may require retreatment every 6 months. Retreatment may be considered at intervals as short as 3 months. Dosage guidelines based on body weight: 15 to 25 kg: 3 mg orally one time 26 to 44 kg: 6 mg orally one time Usual dosage is 0.1-0.25mg per pound of pet's body weight once daily or as directed by veterinarian: Enalapril Dosage for Dogs Weight Dosage; All weights: Usual dosage is 0.25mg per pound of pet's body weight once daily or as directed by veterinarian: Enalapril Dosage for Horses Horses ; Do not use! Storage: Store this medication at room temperature away from heat and moisture. Ingredients. The usual dose of MiraLax powder is 17 grams (about 1 heaping tablespoon) of powder per day (or as directed by physician) in 4 to 8 ounces of water. Each bottle of MiraLax is supplied with a measuring cap marked to contain 17 grams of laxative powder when filled to the indicated line. One to 3 days (24 to 72 hours) may be required to produce a bowel movement.