Otc non sedating antihistamine, what are antihistamines used for?
Avoid taking Zyrtec with alcohol. Drinking alcohol while you take it can increase this drowsiness. They act on histamine receptors in the brain and spinal cord and in the rest of the body called the periphery. They also act on muscarinic, alpha-adrenergic, and serotonin receptors. Zyrtec can interact with this drug and increase your risk of side effects.
What are antihistamines used for?
It comes in a tablet, a tablet that dissolves in your mouth, a chewable tablet, a liquid-filled capsule, and a syrup. It helps relieve runny nose, sneezing, itchy, watery eyes, and itching of the nose or throat due to hay fever and other upper respiratory allergies. You may have taken antihistamines in the past and found it hard to concentrate or stay awake. Warnings Talk to your doctor if you use the bronchodilator theophylline.
For many people, sedating antihistamines, also called old, classic, or first-generation antihistamines, cause sleepiness, grogginess, and slow reaction time. Second generation antihistamines were developed in the s and are much less sedating than first-generation antihistamines. Nonsedating antihistamines, also called new, or second-generation antihistamines, isfp dating infj female are just as effective against nasal allergy symptoms as older medications. Many sedating antihistamines do not require a doctor's prescription. The newer antihistamines are available only by prescription.
What are Antihistamines?
They simply do the job with fewer side effects. First-generation antihistamines were developed more than seventy years ago and are still in widespread use today.
In rare cases, cetirizine has been shown to cause bronchospasms. Common antihistamines available in the U. Interactions with other drugs are more common with first-generation antihistamines compared with second-generation antihistamines. What are the differences between antihistamines?
You should also talk to your doctor before using Zyrtec if you have asthma. Although cetirizine causes less drowsiness than a first-generation antihistamine, it can still make you drowsy. They may interfere with coordination and cloud your concentration. Because some can cause serious side effects or interact with other medications you are taking, be sure to let your doctor know all the medications you take. Claritin can also be used to treat hives.
They make you less sleepy and groggy, and are less likely to cause problems with increased eye pressure, which may worsen glaucoma symptoms. Claritin Loratadine is the main active ingredient in Claritin.
Another advantage of the newer antihistamines is that they're available in time-release versions. Your doctor can guide you to the right antihistamine for you. Serious side effects can include trouble breathing or swallowing.
Popular Over-the-Counter Oral Antihistamine Brands
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