Your body produces health promoting histamine proteins in response to a perceived as foreign invader. Histamines activate tissue receptor proteins that cause the triggering of inflammation. The consequence being symptoms like itching, irritation, sneezing and mucus.
Antihistamines block these receptor proteins, thus reducing your annoying symptoms. And histamine receptor blockage works best if taken ahead of your allergy, cold or flu symptom onslaught. But afterwards is effective as well.
Antihistamines block allergy, common cold and flu symptoms like:
Antihistamines are often mixed with pain relievers or decongestants to knock down other allergy, common cold and flu symptoms.
Histamine receptor blockage drugs are also helpful for treating:
Over-the-counter (OTC) antihistamines are broken down into two treatment types: first and second generation.
First generation OTC antihistamine active ingredients are:
- chlorpheniramine ~ Singlet
- dimenhydrinate ~ Dramamine
- brompheniramine ~ Dimetapp, Robitussin
- doxylamine ~ Vicks NyQuil, Alka-Seltzer Plus
- diphenhydramine ~ Benadryl Allergy, Nytol, Sominex
Second generation OTC antihistamine active ingredients are:
- cetirizine ~ Zyrtec
- loratadine ~ Alavert, Claritin
Talk to your health care person before taking an antihistamine if you suffer from any of these health problems or take any of these drugs:
- liver disease
- sleeping pills
- heart disease
- kidney disease
- thyroid disease
- muscle relaxants
- high blood pressure
- enlarged prostate gland
- high blood pressure mediation
- breathing issues ~ asthma, emphysema, chronic bronchitis