allergic rhinitis
"I thought Zyrtec (cetirizine) was great at first because it worked so well on my allergies. I have gained 15 pounds over 1-1/2 years. I didn't think it was related to Zyrtec, but recently figured out that it is. I am an extremely healthy eater (no processed foods or white flours/sugars), a runner and triathlete without weight issues before Zyrtec. I attributed the weight gain to age, hormones and finally my thyroid. Blood tests ruled out the hormone and thyroid issues. I only take HRT & Zyrtec. I stopped Zyrtec 3 days ago and have lost 2 pounds without any changes in diet. I am willing to suffer with allergy symptoms if I can lose this weight."