Top 20 Doctor insights on: Combining antihistamines
I gave expired antihistamine syrup to my 30 months old son incidentally...Is it dangerous? What s the side effect on him?
Expired drugs: There should be no side effects as expiration is usually based on loss of drug effectiveness. Drug companies err on the side of shortening times to expiration. Actually many drugs are effective long after expiration dates. Expired drugs are commonly used effectively by volunteer organizations when no other drugs are available. Relax! ...Read moreSee 1 more doctor answer
Older ones do:
First generation antihistamines (benadryl, clor-pheramine, atarax) cross the blood brain barrier and cause lethargy.
Second generation (allegra, claritin, zyrtec, xyzal, (levocetirizine) clarinex) cause the blood brain barrier at a much lesser amount and more targeted to the h1 receptor. ...Read more
Several are good: Loratedine (Alavert, Claritin), Cetirizine (Zyrtec)and Fexofenadine (Allegra)are all effective. Dyphenhydramine (Benadryl) is short acting so if you want the reaction not to come back in the middle of the night then one of the above would be better. Remember that you should not give children under 2 antihistamines without checking with your doctor. Between 2-4 y/o you should also ask. Not for colds ...Read moreSee 2 more doctor answers
There are two important considerations. Efficacy and side effects. Caution must be taken with combination meds (antihistamines along with decongestants). Men with prostate issues and anyone with cardiac/BP issues.
Also glaucoma can be affected especially by first generation antihistamines such as Benadryl (diphenhydramine). Best bet, ask your doctor :-) ...Read more
Antihistamines are traditionally used to treat allergic reactions. I am curious as to what exactly what happens to you in response to specific antihistamines: benadryl, (diphenhydramine) zyrtec, Claritin etc.
Pepcid is a medication that inhibits acid production by the stomach and would be helpful for treatment of heartburn, indigestion (dyspepsia), gastitis (stomach inflammation) or reflux of acid ...Read more
Maybe: Medications that have passed the expiration may still work, but the pharmaceutical manufacturer cannot guarantee their effectiveness. The longer the medication is out of date, the more likely they are less effective. ...Read more