A common problem with these drugs is that they may contain more than one medication. It is important to look at the ingredients to see what is included in each product.
Many people find relief of allergy symptoms by taking antihistamines. These include:
Decongestants are also available without a prescription. The most common decongestants are:
If you have high blood pressure, check the ingredients of all over-the-counter allergy products to be sure they do not contain pseudoephedrine or phenylephrine.