In clinical studies, insomnia, dry mouth, and drowsiness were the most commonly reported side effects of Claritin-D. Other less common side effects (occurring in 2 to 3 percent of people) included cough, nausea, and loss of appetite. There are also several rare but potentially serious Claritin-D side effects that may require medical attention, such as chest pain, high blood pressure, and seizures.
An Introduction to Side Effects of Claritin-D
As with any medicine, side effects are possible with
Claritin-D® (
loratadine and pseudoephedrine sulfate). However, not everyone who takes the medication will experience side effects. In fact, most people tolerate it quite well. If side effects do occur, in most cases, they are minor and either require no treatment or can easily be treated by you or your healthcare provider.
(This article covers many, but not all, of the possible side effects with Claritin-D. Your healthcare provider can discuss a more complete list of Claritin-D side effects with you.)
Common Side Effects of Claritin-D
Claritin-D has been studied thoroughly in clinical trials, in which the side effects of a group of people taking the drug are documented and compared to another group not taking the medicine. As a result, it is possible to see what side effects occur, how often they appear, and how they compare to the group not taking the medicine.
In these studies, the most common side effects of Claritin-D in adults included:
- Insomnia -- in up to 16 percent of people (see Claritin-D and Insomnia)
- Dry mouth -- up to 14 percent
- Drowsiness -- up to 7 percent
- Nervousness -- up to 5 percent
- Dizziness -- up to 4 percent
- Fatigue -- up to 4 percent.
Other common Claritin-D side effects (occurring in 2 to 3 percent of people) included:
- Indigestion or heartburn
- Nausea
- Loss of appetite
- Thirst
- Cough
- Painful menstrual periods.
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