The most common side effects with Bonviva tablets (seen in between 1 and 10 patients in 100) are gastritis (inflammation of the stomach), diarrhoea, abdominal pain (stomach ache), dyspepsia (indigestion), nausea (feeling sick), influenza-like illness, fatigue (tiredness), musculoskeletal pain (pain in the muscles and bones), arthralgia (joint pain), myalgia (muscle pain) and musculoskeletal stiffness.