Can allergy medicine cause weight gain?

In my younger days, I used to take daily allergy tablets and noticed I was gaining a bit of weight because they made me feel so hungry and sleepy. Do not worry, it is quite common with some antihistamines. Try talking to your doctor to see if they can suggest a different medicine that doesn't cause this.

I completely understand how stressful it is to notice your weight going up when you are just trying to treat an allergy. It can make you feel so anxious and out of control. Please know that this is a known side effect of some allergy meds, and speaking to your doctor can help put your mind at ease.

With PCOS, I am always terrified of anything that might cause weight gain. I read that some older antihistamines can block certain receptors and increase your appetite. I would suggest asking your doctor for modern, non-drowsy allergy medicines that are less likely to affect your weight.

Yes, some allergy medicines are known to increase appetite or make you feel tired, which can lead to weight gain over time. Please don't be hard on yourself. A quick talk with your doctor can help find an alternative that works better for you.