Antihistamines are generally more effective when taken constantly rather than intermittently.This is particularly applicable for people with hay fever (seasonal allergic rhinitis).

If you are one of the many people who get hay fever each year, you will know all about antihistamines. Some of these medicines are available to buy over the counter from your pharmacist. These medicines come in a variety of forms, as mentioned above.

This is one of the most common uses of antihistamines. Your doctor or pharmacist will advise you on how to take your medication, including what dose and how often.

Once-daily fexofenadine appears to offer effective and well-tolerated relief from the symptoms of this illness.

INTRODUCTION With allergy season upon us, people will be seeking an OTC product for allergy symptom relief, and pharmacists will be making recommendations based on individual patients’ needs (eg, fast working, nonsedating, and long lasting).

Examples of sedating antihistamines: Sedation is rare with non-sedating antihistamines, however patients should be made aware that a sedative effect may occur and performance of skilled tasks such as operating machinery or driving maybe affected.

Antihistamines are a group of medicines which act by blocking the action of the chemical called histamine in the body.Allergies often manifest after several seasonal exposures to the same set of pollens or potential allergens.Because pharmacists are often asked to make OTC recommendations for AR relief, they must be aware of the prevalence, etiologies, and manifestations of AR, and approaches to its treatment.There is little evidence that antihistamines used symptomatically to treat nonspecific itching have any effect greater than placebo.Most of the second-generation antihistamines have been shown to benefit chronic idiopathic urticaria.If the benefits of treatment are thought to outweigh any possible risks, the one usually advised is loratadine.