An unusual or allergic reaction to alendronate, other medications, foods, dyes or preservatives Pregnant or trying to get pregnant Breast-feeding How should I use this medication? Take this medication by mouth with a full glass of water. Take it as directed on the prescription label at the same day of each week. Take the dose right after waking up., Fosamax is a prescription drug used to treat osteoporosis and other bone problems. Learn about the drug’s dosages, form, strength, and more., For oral dosage forms (liquid or tablets): For treatment of corticosteroid-induced osteoporosis: Adults—5 milligrams (mg) once a day at least 30 minutes before the first food or drink of the day other than water. In postmenopausal women not receiving estrogen, the dose is 10 mg once a day. Children—Use is not recommended., The usual dosage for osteoporosis prevention is 35 mg once weekly, or 5 mg once daily. The usual dosage for osteoporosis treatment is 70 mg once weekly, or 10 mg once daily. You doctor will tell you how many pills to take and how often. Follow your doctor’s directions. For the best results, take these pills at the same time every day., Read this Fosamax dosage guide for information on typical dosages, adjustments for health conditions, and what to do if you miss a dose., Fosamax is used to treat certain bone conditions such as osteoporosis. Find out what the recommended dosages are, how to take the drug, and more..