Possible Reason for Weight Gain

I don't know if this subject has been brought up before, but if anyone has gained weight even though they have stayed within their allotted calories, it could be your medication. I couldn't understand why I was actually gaining weight until I realized I was taking a newly prescribed antihistimine called Loratadine. If you find yourself in the same situation please ask your doctor to prescribe something else and don't get discouraged and give up on the diet.