Allergic reactions take place when a person’s body overreacts to some sort of substance. The person’s histamine receptors kick into hyper-drive and begin releasing abnormally high amounts of histamine, which can trigger several different reactions. Mucus is produced in copious amounts, to try and “flush out” the substance, which leads to a runny nose. Swelling in the sinuses causes headaches.

The combination of pollens and mucus cause soreness in the throat, and significant amounts of mucus can also upset the stomach if swallowed. This guide is not intended to be used for diagnosing or treating any medical condition. None of the medications mentioned in this guide are being recommended in comparison with others.

For readers with questions regarding specific medications or readers who are unsure of whether or not they suffer from allergies, should seek the advice of a medical professional. Provide the pharmacist and physician a full report of all other medications that you are taking during your consultation, as well as any other conditions you’ve been previously diagnosed with. Below you will find a list of the most widely used OTC allergy medications, along with their generic and brand names. The price for these medications may differ substantially, depending on where you purchase them.

This particular antihistamine is a best seller in the allergy medication market. It is taken once daily, and requires a few days to become effective. Since it does not cause those who use it to become lethargic, it is optimal for people who operate machinery or drive regularly. Diphenhydramine is sold as Tylenol Flu, Benadryl and can also be found in several nighttime remedies. As the name implies, the medication is used to treat allergies, but its greatest setback is the drowsiness it causes.

This can be helpful in situations where allergy symptoms keep you awake at night.

Pseudo-ephedrine is sold as Comtrex, Sudafed and Actifed and is highly effective for relieivng allergy symptoms. The amount of these OTC medications that you are allowed to purchase is likely limited, and products containing ephedrine are kept in locked receptacles in stores. The substance may cause heart palpitations (skipped beats), insomnia and intense restlessness.  Another possible side effect is urinary retention.