Hello,
Glucosamine is used to treat of
arthritis, mainly the mild forms. Some supplement products were reported later at the post-market period to have possibly harmful impurities that caused side effects.
So, it is always better to check with the pharmacist or the doctor in regard to the particular brand in use.
You cab also check the FDA website about any product for safety or effectiveness. To my knowledge, glucosamine has not been evaluated by the FDA for safety, effectiveness, or purity so; potential risks and/or benefits of glucosamine are still to be defined.
I would advise you to convince him get checked by his doctor; it could be also due to a physical or mental stress.
Please keep us updated.
Best regards.
This answer does not substitute for direct medical consultation.
Dr. Safaa Mahmoud.
MB BCh, MSc Internal Medicine. MD Medical Oncology.
PhD Experimental Medicine and Biochemical Science.