Hi,
Thanks for using Healthcaremagic,
Your husband is having Diabetes type II and
Overweight,I presume he is recently detected to have high blood sugar and Metformin is good drug for this type of Diabetes.
This dose of Metformin can be started with low dose and can be increased slowly then it is tolerated well and known to cause GIT side effects.
He should take care of diet carefully and avoid food with high
glycemic index and simple sugar.
Exercise regularly helps to reduce peripheral glucose resistant and helps to control blood sugar.
His problem of erection could be due to Neuropathy or vasculopathy or simply Psychological which needs to be tested by penile Doppler.
If there is no other issue like
Ischemic heart disease than drugs like Sildenafil may be of great help.
Take care of diet for hair loss and
Multivitamin may be given this may be due to his
rapid weight loss but it will settle down and weigh loss should be gradual.
Hope this helps.
Wish him good health.
Dr.Akhilesh Dubey M.D