Our expert says:
Congratulations on losing those 11 kg - you are a **star**! You don't mention what medication you were taking, so I can't check if that specific drug causes water retention! Antihistamines generally don't contain cortisone and according to my copy of MIMS, water retention is not one of their listed side-effects. If you did take a cortisone then water retention can occur, but in the absence of the product's name I cannot judge.
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