Hi, Yes, these side effects can come [headache and body ache]. These are other options than medicines are: 1. Diet [if you have diabetic diet comes under name of joslin why wait diet] or structured weight loss programme [Jenny Craigh, nutri-system] along with consume diet only at home [500ml prior to every meal drinking water can helpful] 10ml/kg cold water result in additional weight loss Starvation is not recommened and multivitamins to be continued for few days in these diets [5 days a month]. 2. Physical activity and behavior [join online art of living course happiness course or wellness course or ombw these 2 things will be taken care fully and repeat these workshop] with medicines it is very helpful and no side effects Drug Orlistat is option, but that to have side effects [about this you can ask your treating physician] If you follow above its definitely helpful [both simultaneously] in just 12th day I have seen change in patients. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Sunny Madar, General & Family Physician