Atelvia (generic: risedronate) is a prescription medication used to treat osteoporosis in women after menopause. Atelvia belongs to a group of drugs called biphosphonates, which slow the rate that bones break down. 

This medication comes in tablet form and is taken just once a week, after breakfast, with at least 4 ounces of water. Do not lie down for 30 minutes after taking Atelvia.

Common side effects of Atelvia include diarrhea, muscle pain, and upset stomach.