Antihistamines. Antihistamines (histamine H 1 -receptor antagonists) are classified as sedating or non-sedating, according to their relative potential for CNS depression. Antihistamines differ in their duration of action, incidence of drowsiness, and antimuscarinic effects; the response to an antihistamine may vary from child to A doctor has provided 1 answer. Dr. Lee Perry answered. Specializes in Allergy and Immunology. Antihistamines are generally safe to take for prolonged periods of time, as long as you're taking the proper dose. These medicines are notorious for causing drowsiness, although some over the counter
Allergy medications: Know your options - Mayo Clinic
Early antihistamines (first-generation – Table 1), introduced in the s, affect also dopaminergic, serotonergic and cholinergic receptors, inducing multiple side-effects, such as sedation. The advantage of newer antihistamines (second – and third-generation) is the selective H1 binding and their anti While histamine has helpful uses, an overproduction of it can trigger classic allergy symptoms such as a runny nose, sneezing, itching, and watery eyes. Side-effects of antihistamines. Like all medicines, antihistamines can cause some side-effects. But they are generally thought to be safe medicines. Sedating antihistamines Dizziness * headache. blurry vision * low blood pressure. * To learn more about this side effect, see the “Side effects explained” section below. What are the mild Medical Answers. Is it OK to take antihistamines every day? Medically reviewed by Melisa Puckey, BPharm. Last updated on Aug 26, Official answer. by Chills. cough or hoarseness. fever with or without chills. general feeling of tiredness or weakness. joint or muscle pain. large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs. lower back or side pain. painful or difficult urination. red irritated eyes Cetirizine is a non-drowsy antihistamine & can be taken with or without food. It is recommended because: It has few side effects It starts working very quickly A dose keeps working for hours There is research showing it is safe for long term use Other Antihistamines Chlorphenamine (Piriton®) is familiar to many people.
Antihistamines: How they work, types, and side effects
Some of the less common side effects of antihistamines include drowsiness, dry mouth, dizziness, and difficulty concentrating (2). Some of the antihistamines’ more common side effects include headache, fatigue, dry eyes, and itching. Some antihistamines have been known to cause hallucinations, delusions, and trouble Long Term Antihistamine Use Concerns. Hi awesome people of r/AskDocs I was hoping to get some advice on my allergies and chronic antihistamine use. I'm a 30 year old female (5'1 lbs) with dust mite and cat allergies. The cat allergies aren't a problem, their fairly easy to avoid, but my dust allergies are another story