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Brand Benadryl Allergy Relief 8 mg from the UK OTC

The brand Benadryl allergy relief 8 mg from the United Kingdom by Johnson & Johnson. It is available in the quantity of 12, 24, and 36 capsules.

Benadryl Allergy Relief Information

Benadryl Allergy Relief is a common over-the-counter (OTC) medication used to treat the symptoms of various allergic conditions, most notably hay fever and other upper respiratory allergies. The primary active ingredient in most formulations in the United States and Canada is diphenhydramine hydrochloride, a first-generation antihistamine. This class of medication works by blocking the action of histamine, a chemical released by the body's immune system in response to an allergen. Histamine binds to H1 receptors on cells, causing symptoms such as sneezing, itching, a runny nose, and watery eyes. By acting as an inverse agonist at these H1 receptors, diphenhydramine effectively prevents histamine from binding, thereby reducing or stopping the allergic reaction.

In addition to its antihistamine properties, diphenhydramine has a strong sedative effect. This is because it is a first-generation antihistamine, meaning it can readily cross the blood-brain barrier and affect the central nervous system. This sedative property is why Benadryl is also widely used as a short-term sleep aid. It also possesses anticholinergic properties, which contribute to its effectiveness in drying up a runny nose and reducing watery eyes. However, these same properties can also lead to side effects like dry mouth and blurred vision.

It is essential to differentiate the active ingredients of Benadryl products, as they can vary by country and formulation. In the United States and Canada, Benadryl Allergy Relief contains diphenhydramine. In contrast, Benadryl products in other countries like the UK often contain second-generation antihistamines such as acrivastine or cetirizine, which are less likely to cause drowsiness. This distinction is crucial for proper use and to manage potential side effects.

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Do I need a prescription to order Benadryl Allergy Relief 8 mg ?

No, a prescription is not required from your physician to order Benadryl Allergy Relief 8 mg.