Medically reviewed by Lindsay Cook, PharmD Xyzal (levocetirizine) and Zyrtec (cetirizine) are antihistamines taken to relieve ...

For patients with symptomatic chronic spontaneous urticaria after treatment with second-generation H1-antihistamines, ...

Taking too much antihistamine can lead to adverse side effects and a potential antihistamine overdose. Signs may include fast heart rate, fever, and dilated pupils. People should follow the dosage ...

Spring allergies will be here soon. If you’re suffering from a runny or congested nose, watery or itchy eyes or sneezing, ...

A common antihistamine may offer hope for patients with a rare genetic disease that can lead to severe liver damage and ultimately require transplantation, according to new research from Rutgers ...

Mixing alcohol and Bendaryl can have dangeorus effects. Learn more about why you should avoid this interaction.

Patients with chronic spontaneous urticaria that was not controlled with H1 antihistamines experienced improvements in itch and urticaria activity with dupilumab, according to a poster presented here.

Some antihistamines can cross the blood-brain barrier – a membrane that’s supposed to protect harmful substances from getting in - Getty ...

Wondering when to take hay fever medication? Dr Amir Khan has the answer as he spoke on ITV's Lorraine about early seasonal ...

to twice-daily azelastine (an intranasal antihistamine), fluticasone propionate, the combination of the two, or placebo for 2 weeks during the allergy season; all treatments were administered as ...

For patients with moderate-to-severe SAR that is uncontrolled on nasal steroids alone, the treatment of choice should be a combination intranasal steroid and intranasal antihistamine. For patients ...