Types of sedating antihistamines
They're usually divided into two main groups: They also come in several different forms – including tablets, capsules, liquids, syrups, creams, lotions, gels, eye drops and nasal sprays.
Stomach pain acid secretion increases; small intestine contracts with crampy pain Respiratory - nose swelling, congestion, sneezing and wheezing.
Side effects might include daytime drowsiness, dry mouth and dizziness.
Also, diphenhydramine and doxylamine — sedating antihistamines often found in over-the-counter sleep aids — aren't recommended for people who have certain conditions, such as closed-angle glaucoma, asthma, chronic obstructive pulmonary disease or severe liver disease.
Antihistamines are medicines often used to relieve symptoms of allergies, such as hay fever, hives, conjunctivitis and reactions to insect bites or stings.
They're also sometimes used to prevent motion sickness and as a short-term treatment for sleeping difficulties (insomnia).