Non sedating oral antihistamine dating kennington

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"Obviously, in the old days when you only had sedating antihistamines, that's what you used, but you generally start out by having patients take them at bedtime.

"The first-generation antihistamines are more sedating, but the distinction isn't as black-and-white as the marketing of the newer products may lead you to believe.

They also act on muscarinic, alpha-adrenergic, and serotonin receptors.

This means that first-generation antihistamines are more likely to cause side effects such as sedation, dry mouth, dizziness, low blood pressure, and a rapid heart-beat.

The difference between them is really blurred." "Under some circumstances, the nonsedating formulas do cause sedation and in some cases, these sedating formulas do not," he tells Web MD.

"In some studies we reviewed, some people actually experienced more sedation with the newer, nonsedating formulas than with the older, sedating products.

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