![]() ![]() Ingredients of first-generation antihistamines include brompheniramine, chlorpheniramine, dimenhydrinate, diphenhydramine and doxylamine. Ask a pharmacist to help you compare products and read the labels if the print is too small. These effects are more common for anyone taking certain antidepressant medications. Unfortunately, in some people, they can result in side effects like anxiety, confusion, feeling sleepy, blurred vision, reduced mental alertness, urinary retention and constipation. Older formulas work, but beware of side effects and bad interactionsĭoctors often refer to the first type of antihistamines that were on the market as “first-generation.” They are great at treating allergy symptoms. How much you take or use and how many times a day you use it.There are different types of antihistamines, and some are better than others depending on your age, health, and other medications you take.Form of the medicine, such as tablet, capsule, liquid, eyedrops, or spray.Use a notebook to record information on medicine you use, including: When you take either over-the-counter or prescription medicines, you may want to keep a medicine record. If over-the-counter medicines do not improve your symptoms, or if they cause bothersome side effects, such as drowsiness, talk with your doctor about prescription medicines. (Saline-only eyedrops for dry eyes may feel good but do not reduce allergy symptoms.) Examples of over-the-counter eyedrops include naphazoline (Clear Eyes) and tetrahydrozoline (such as Visine). This effect is similar to the rebound congestion of nasal spray decongestants. They can cause symptoms when you are not having allergy symptoms. Don't use them for more than 3 days in a row. These medicines reduce itching and watering of eyes. ![]() Examples of over-the-counter antihistamine/decongestant combinations include pseudoephedrine/chlorpheniramine maleate (such as Triaminic) and pseudoephedrine/triprolidine (such as Actifed). But some people feel nervous and sleepy at the same time ("tired and wired"). Usually the decongestant decreases the drowsiness caused by the antihistamine. ![]() These combination pills work on most of the symptoms of allergies.
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