I am diabetic and on Metformin, and am wondering if this could be the cause of the sensation of ice water running through my entire body. I get really weak and have to go lay down for about half an hour until it resides. I never had this sensation before taking the medication.
Hello, Thanks for the query. As you have T2 diabetes, if this condition is there for a long time (months or years) or sometimes even in the beginning there may be peripheral neuropathy developing.  The sensation described could be due to that manifestation. Metformin can occasionally cause stomach disturbance, but no other major side effects. It is essential to achieve a strict blood glucose control in diabetes to be free from all the symptoms. Fasting should be closer to 100 mg, PP 160 to 170 mg & HbA1c%<7. Since there is no mention the blood glucose levels it is difficult to give any specific opinion. If you have any doubts I will be GL;ad to clarify. Thanks