Residron Adverse Reactions

Risedronate sodium has been studied in phase III clinical trials involving more than 15,000 patients.
The majority of undesirable effects observed in clinical trials were mild to moderate in severity and usually did not require cessation of therapy.
Adverse experiences reported in phase III clinical trials in postmenopausal women with osteoporosis treated for up to 36 months with risedronate sodium 5mg/day (n = 5020) or placebo (n = 5048) and considered possibly or probably related to risedronate sodium are listed as follows using the following convention (incidences versus placebo are shown in brackets): Very common (≥ 1/10); common (≥ 1/100; < 1/10); uncommon (≥ 1/1,000; < 1/100); rare (≥ 1/10,000); very rare (< 1/10,000).
Nervous system disorders: Common: headache (1.8% vs. 1.4%).
Eye disorders: Uncommon: iritis*.
Gastrointestinal disorders: Common: constipation (5.0% vs. 4.8%), dyspepsia (4.5% vs 4.1%), nausea (4.3% vs 4.0%), abdominal pain (3.5% vs 3.3%), diarrhoea (3.0% vs. 2.7%).
Uncommon: gastritis (0.9% vs 0.7%), oesophagitis (0.9% vs 0.9%), dysphagia (0.4% vs. 0.2%), duodenitis (0.2% vs. 0.1%), oesophageal ulcer (0.2% vs 0.2%).
Rare: glossitis (< 0.1% vs 0.1%), oesophageal stricture (< 0.1% vs. 0.0%).
Musculoskeletal and connective tissues disorders: Common: musculoskeletal pain (2.1% vs. 1.9%).
Investigations: Rare: abnormal liver function tests*.
* No relevant incidences from Phase III osteoporosis studies; frequency based on adverse event/laboratory/rechallenge findings in earlier clinical trials.
In a one-year, double-blind, multicenter study comparing risedronate sodium 5mg daily (n = 480) and risedronate sodium 35mg weekly (n = 485) in postmenopausal women with osteoporosis, the overall safety and tolerability profiles were similar. The following additional adverse experiences considered possibly or probably drug related by investigators have been reported (incidence greater in risedronate 35mg than in risedronate sodium 5mg group) gastrointestinal disorder (1.6% vs 1.0%) and pain (1.2% vs 0.8%).
In a 2-year study in men with osteoporosis, the overall safety and tolerability were similar between the treatment and the placebo groups. Adverse experiences were consistent with those previously observed in women.
Laboratory findings: Early, transient, asymptomatic and mild decreases in serum calcium and phosphate levels have been observed in some patients.