The most common side effects with Fosavance are headache, abdominal pain (stomach ache), dyspepsia (heartburn), constipation, diarrhoea, flatulence (gas), ulcers in the oesophagus, dysphagia (difficulty swallowing), abdominal distension (swollen tummy), acid regurgitation and musculoskeletal pain (pain in the muscles, bones and joints). For the full list of all side effects reported with Fosavance, see the package leaflet.
Fosavance should not be used in people who may be hypersensitive (allergic) to alendronic acid, vitamin D 3 or any of the other ingredients. It must not be used in patients who have abnormalities of the oesophagus, who have hypocalcaemia (low blood calcium levels), or who cannot stand or sit upright for at least 30 minutes.