These side effects may occur with certain frequencies, which are defined as follows: • very common: affects more than 1 patient in 10 • common: affects 1 to 10 patients in 100 • uncommon: affects 1 to 10 patients in 1,000 49 • rare: affects 1 to 10 patients in 10,000 • very rare: affects less than 1 patient in 10,000 • not known: frequency cannot be estimated from the available data.