I am on meds for high blood pressure, and i suffer from allergies. my allergies manifest as a unproductive cough. i take cetirizine for my allergies, but it doesnt get rid of the cough. is there another antihistamine that would work better?

Many causes: There are many causes for a chronic unproductive cough. Postnasal drip from sinusitis, Asthma, Gastroesophageal reflux disease (GERD), Infections, Chronic obstructive pulmonary disease (COPD) and some Blood pressure meds. Talk to your Dr to have a thorough evaluation where these are ruled out. They can also discuss the effectiveness of your allergy meds.

Lisinopril?: Lisinopril for high blood pressure can cause a dry cough as well.