Scopolamine’s effectiveness is likely due to its central anticholinergic properties.Common adverse effects can include dry mouth/nose/throat, drowsiness, loss of visual accommodation, and sensitivity to bright light.
Antihistamines make your sleepy by antagonizing central histimine-1 (H-1) receptors in the brain.
The ones you see in over-the-counter sleep aids are usually diphenhydramine and hydroxyzine.
Histamine is a natural substance, one of the important inflammatory mediators produced in certain cells in the body.
(20) When introduced into the nose, histamine causes dilatation and leakage of blood vessels.
Histamine may also have a role in causing coughs, but this is less certain.
There are two classes of antihistamines, the older ("first generation", "sedating") and the newer ("second generation", "non-sedating") classes.Corticotropin is used mainly to diagnose problems with adrenocortical function.It may be used to treat certain conditions caused by allergies, breathing, blood, or endocrine problems; arthritis; skin or eye problems; bowel inflammation; multiple sclerosis; or certain cancers instead or corticos Diphenhydramine is an antihistamine, prescribed for severe allergic conditions such as runny nose, sneezing, itchy, watery eyes.They do, however, have the potential for negative effects if taken with other drugs, so let your doctor know if you are taking more than one medication.Doxylamine can be used by itself as a sleep aid or combined with other drugs for cold and allergy relief (usually in a night-time formula).Less common adverse effects include palpitations, urinary retention, bloating, constipation, headache, and confusion.