The most common adverse events were alanine aminotransferase increases ( @ -LSB- @ % -RSB- of @ patients in the placebo group vs @ -LSB- @ % -RSB- of @ patients in the teriflunomide @ mg group vs @ -LSB- @ % -RSB- of @ patients in the teriflunomide @ mg group ) , hair thinning ( @ -LSB- @ % -RSB- vs @ -LSB- @ % -RSB- vs @ -LSB- @ % -RSB- ) , and headache ( @ -LSB- @ % -RSB- vs @ -LSB- @ % -RSB- vs @ -LSB- @ % -RSB- ) .