My Wife Aged 56 Years Want To Try Out Glycomet

My wife aged 56 years want to try out Glycomet to reduce weight....reason, I am 62 years and was advised to take it (500mg) one a day before food in the morning...she and I eat same food, same qty, I reduced my weight by 5 kg in 3-4 months, whe did not....we do same type of gym tread mill for about 40 min daily. Please advise if it is safe for her also to try Glycomet 500md