Senior Health Home > Side Effects of Extended-Release Gabapentin

Although most people tolerate extended-release gabapentin well, side effects are possible. Some of the most common side effects of this medication include drowsiness, headaches, and dizziness. In most cases, reactions to this drug are minor and easy to treat. However, notify your healthcare provider right away if you develop serious problems, such as depression, suicidal thoughts, or hostility.

An Introduction to Side Effects of Extended-Release Gabapentin

Just like any medicine, extended-release gabapentin (Gralise™) can cause side effects. However, not everyone who takes the medication 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 are treated easily by you or your healthcare provider.
(This article covers many, but not all, of the possible side effects with extended-release gabapentin. Your healthcare provider can discuss a more complete list with you.)

Serious Extended-Release Gabapentin Side Effects

Some side effects of this drug are potentially serious and should be reported immediately to your healthcare provider. These include but are not limited to:
  • Depression
  • Hostility
  • Suicidal thoughts or actions
  • Severe dizziness, confusion, or coordination problems that do not improve with time (as you become accustomed to the medication)
  • Signs of an allergic reaction, such as:
    • An unexplained rash
    • Hives
    • Itching
    • Swelling of the mouth or throat
    • Wheezing
    • Difficulty breathing.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
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