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Apr 17, 2023 · What are the side effects of antihistamines? Side effects of first-generation (sedating) antihistamines may include: blurred or double vision; constipation; dry eyes; a dry mouth; drowsiness or sedation; a headache; low blood pressure; mucus thickening in the airways; a rapid heartbeat; stomach pain; urinary problems; Side effects of second ...
Jul 13, 2020 · When histamine, a chemical created by your immune system, overreacts to an allergen such as pollen and pet dander, it can cause symptoms such as coughing, sneezing and watery eyes. Antihistamines are medications that help with allergies, and also with stomach problems, cold, anxiety and more.
Jul 2, 2020 · Feeling drowsy or sleepy is one of the most common antihistamine side effects, especially in regard to first-generation antihistamines. It’s so common, in fact, that diphenhydramine is...
Jan 17, 2023 · Side Effects of Antihistamines. Older ones tend to cause more side effects, particularly drowsiness. Newer antihistamines have fewer side effects, so they may be a better choice for some people.
Feb 16, 2023 · Side effects and risks. Anyone taking antihistamines or any medication should check the label to see which active ingredients the medication contains to avoid the risk of an overdose. If a...
Side effects of non-drowsy antihistamines can include: headache; dry mouth; feeling sick; drowsiness – this is less common with non-drowsy antihistamines but is still possible; Check the leaflet that comes with your medicine for a full list of possible side effects and advice about when to get medical help.
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.
Nov 15, 2019 · Antihistamines act to prevent the action of histamine, a bioactive amine, at one of the histamine receptor, to block itching, swelling, redness, nasal congestion, teary eyes, cough,...
Oct 11, 2022 · Side-effects of antihistamines. Most people who take antihistamines do not have any serious side-effects. If side-effects do occur, they are usually minor. The most common are: Drowsiness. Headache. Dizziness. Agitation. Dry mouth. Blurred vision. Difficulty passing urine (urinary retention). Stomach and gut upsets (gastrointestinal discomfort).
Jun 1, 2024 · Side Effects. Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. Check with your doctor immediately if any of the following side effects occur:
