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Seasonal Allergy Antihistamines

Symptoms Requiring Antihistamines

  • Runny nose
  • Watery eyes
  • Ichiness
  • Sneezing
  • Scratchy throat

Best Brands of Antihistamines?

People often want to know about the best sasonal allergy antihistamines. Best meaning the most effective. However, it is difficult to determine this because different brands work in different ways. Some people will receive little relieve from Zyrtec, while AllerTec feels like a godsend, and vise versa.

Although not neccessarily the best, here is a list seasonal allergy antihistamines that I find to be the most common:

Allegra Claritin
AllerClear Tylenol Allergy
AllerTec Zyrtec
Benadryl








Best Form?

Drops? Pills? Capsules? What is the best form of seasonal allergy antihistamines to take?

Again, this is a difficult question to answer as antihistamines are available in a variety of forms, each service their own purpose. They are available as eye drops, injections, creams, nasal sprays, capsules, syrups and tablets. However, none of these are necessarily better than the others. Some may provide more immediate, or longlasting delivery of the medication, but all can be found as equally effective to different individuals.

In severe cases, doctors will often prescribe higher doses of antihistamines, this will require a prescription, and may even come in the form of an injection. However, for hay fever and seasonal allergies, they are easily available in almost any form without a doctors prescription.

How do Antihistamines Work?

Histamine is a chemical which is responsible for allergic reactions caused by many types of allergies. Antihistamines cut the effect of histamines.

Binding is prevented by coating receptors, which block the effect of histamines. These coated receptors then in turn prevent nasal allergies. Antihistamines start working after 15-30 minutes, responding effectively after an hour or so. An antihistamine therefore stops the reaction of allergies if taken before the allergens begin to affect you.

When to take antihistiamines?

Because antihistamines work by blocking the effects of histamine, it is highly suggested that you start taking them in anticipation of your symptoms. Once your symptoms begin, histamine has already begun to affect your body, and the usefulness of antihistamines will diminish.

If you have severe allergic reactions that cause shortness of breath, you may need a prescription strength antihistamine or injections. Injections are not available without a doctors prescription.

Potential Side-Effects

All medicines have some types of side effects and antihistamines are no different. In addition, over use or overdose of any medicine can create severe problems.

Drowsiness is very common in using antihistamines, regular use overcomes this problem. Driving and use of machinery should be avoided after taking antihistamines that cause drowsiness, although, there are no severe side effects of taking antihistamines.

Simple side effects which are commonly reported are:

  • Headache
  • Dry mouth
  • Nausea
  • Constipation
  • Skin or eye irriation
  • Depression

Less common side effects also include:

  • Tremor
  • Disturbed sleep
  • Over-excitement in children
  • Confusion
  • Dizziness
  • Blurred vision