Allergies Home > Alavert

Alavert is an antihistamine medication available over-the-counter. Compared with other non-prescription antihistamines, this drug is less likely to cause drowsiness. Because it works by blocking a specific type of histamine receptor in the body, Alavert can help relieve and prevent allergy symptoms. The medication comes in the form of tablets or orally disintegrating tablets. Possible side effects include headaches, fatigue, and dry mouth.

What Is Alavert?

Alavert® (loratadine) is an antihistamine medication available without a prescription. It is also available in combination with a decongestant (see Alavert-D for more information). Compared to many non-prescription antihistamines, Alavert is much less likely to cause drowsiness.
(Click Alavert Uses for more information, including possible off-label uses.)

Who Makes This Medication?

Alavert is made by Wyeth Consumer Healthcare.

How Does It Work?

Alavert is part of a class of drugs called antihistamines. Specifically, it is an H1 receptor antagonist. This means that it blocks a specific type of histamine receptor in the body known as H1 receptors. Because allergic reactions are partly caused by the release of histamine from certain cells in the body, this medication can help relieve or prevent allergy symptoms.

When and How to Take Alavert

Some general considerations for those taking this drug include the following:
  • Alavert comes in tablets or orally disintegrating tablets. It is usually taken by mouth once daily.
  • You can take this medication with or without food. If Alavert bothers your stomach, try taking it with food.
  • The orally disintegrating tablets dissolve rapidly on the tongue with no need for water. They are a good option for people who have trouble swallowing tablets.
  • Try to take this medication at the same time each day to keep an even level in your blood.
  • Some people need to take Alavert all year long, while others take it only during allergy season.
  • For the medication to work properly, it must be taken as directed by the package labeling. Please read the label closely.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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