By: Elena Grace Flores
Runny nose, sneezing, and watery and itchy eyes¾all symptoms of colds and allergies can first be remedied by Antihistamines – to rule out allergy as the culprit. They block histamine in the body thus preventing the symptoms. Antihistamines can be purchased without prescription and they are available in generics or branded labels. In any case, they do not usually cause drowsiness.
Of all the ingredients used in over-the-counter cold and allergy products, antihistamines are the most likely to cause drowsiness. This may be a welcome effect at bedtime, but a problem during the day. Drowsiness varies by antihistamine and by person. Click here to seethe direct source: http://www.drugstore.com/runny-nose-sneezing-and-watery-eyes-cold-and-allergy-treatment/qxc295149
According to drugstore.com: Over-the-counter antihistamines such as chlorpheniramine (Chlor-Trimeton®) and brompheniramine (Dimetapp®) are the least likely to cause drowsiness and are best for daytime use. An antihistamine such as diphenhydramine (Benadryl®) is the most sedating and best for nighttime use. Some antihistamines last up to 12 hours. If you’ve never used an antihistamine, try starting with a shorter-acting product like Chlor-Trimeton 4 Hour to see how your body responds. If you don’t get relief with an over-the-counter product, talk to your health care provider to find out if a prescription antihistamine could help. Claritin is now available as an over-the-counter medicine as well as a prescription antihistamine depending on the strength. Claritin is unlikely to cause drowsiness.