Incontinence Home > Toviaz Side Effects
Although most people do not experience any problems while taking Toviaz, it's possible for side effects to occur. Some of the most common side effects that have been reported with this medication include dry mouth, constipation, nausea, and indigestion or heartburn. While most side effects of Toviaz are minor, some are potentially serious and require immediate medical attention, such as heat stroke, severe constipation, and difficulty urinating.
As with any medicine, side effects are possible with Toviaz™ (fesoterodine fumarate); however, not everyone who takes the drug will have problems. 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 Toviaz. Your healthcare provider can discuss a more complete list of Toviaz side effects with you.)
Toviaz 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 are then compared to side effects that occur in another group of people taking a placebo (a "sugar pill" with no active ingredients). This way, it is possible to see what side effects occur, how often they appear, and how they compare to the group taking the placebo.
In these studies, the most common Toviaz side effects included:
- Dry mouth -- in up to 34.6 percent of people (see Toviaz and Dry Mouth)
- Constipation -- up to 6 percent (see Toviaz and Constipation)
- Urinary tract infection (UTI or bladder infection) -- up to 4.2 percent
- Dry eyes -- up to 3.7 percent
- Indigestion or heartburn -- up to 2.3 percent
- Dry throat -- up to 2.3 percent.
Other common side effects, occurring in 1 to 2 percent of people, included (but were not limited to):
- Upper abdominal pain
- Painful urination
- Fluid retention, especially in the hands or feet
- Back pain