Side Effects of Quetiapine XR

Clinical studies have shown that some of the common side effects of quetiapine XR include a dry mouth, dizziness, and drowsiness. However, most people tolerate the drug well and when side effects do occur, they are usually minor and easily treated by you or a healthcare provider. You should seek immediate medical care, however, if you develop more serious side effects of quetiapine XR, such as suicidal thoughts, seizures, or signs of an allergic reaction.

 

An Introduction to Side Effects of Quetiapine XR

As with any medicine, there are possible side effects with quetiapine XR (Seroquel XR®). However, not everyone who takes the medication will experience side effects. In fact, most people tolerate it quite well. When side effects do occur, in most cases, they are minor and either require no treatment or are easily treated by you or your healthcare provider.
 
(This article covers many, but not all, of the possible side effects with quetiapine XR. Your healthcare provider can discuss a more complete list of quetiapine XR side effects with you.)
 

Common Side Effects of Quetiapine XR

Quetiapine XR has been studied thoroughly in clinical trials. In these studies, the side effects that occur in a group of people taking the drug are documented and then compared to the side effects that occur in another group of people 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 quetiapine XR side effects included:
 
  • A calm or sleepy feeling (known medically as sedation) -- in up to 13 percent of people
  • Dry mouth (see Seroquel XR and Dry Mouth) -- up to 12 percent
  • Drowsiness -- up to 12 percent
  • Dizziness -- up to 10 percent
  • Constipation -- up to 6 percent
  • Indigestion or heartburn -- up to 5 percent.
 
(Side Effects of Quetiapine XR Continued: Page 2)
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Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD;