Get emergency medical help if you have signs of an allergic reaction to Gralise: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Seek medical treatment if you have a serious drug reaction that can affect many parts of your body. Symptoms may include: skin rash, fever, swollen glands, muscle aches, severe weakness, unusual bruising, upper stomach pain, or yellowing of your skin or eyes.
Report any new or worsening symptoms to your doctor, such as: mood or behavior changes, anxiety, panic attacks, trouble sleeping, or if you feel impulsive, irritable, agitated, hostile, aggressive, restless, hyperactive (mentally or physically), depressed, or have thoughts about suicide or hurting yourself.
Call your doctor at once if you have:
weak or shallow breathing;
blue-colored skin, lips, fingers, and toes;
confusion, extreme drowsiness or weakness;
problems with balance or muscle movement;
unusual or involuntary eye movements; or
increased seizures.
Gabapentin can cause life-threatening breathing problems. A person caring for you should seek emergency medical attention if you have slow breathing with long pauses, blue colored lips, or if you are hard to wake up. Breathing problems may be more likely in older adults or in people with COPD.
Common Gralise side effects may include:
fever, chills, sore throat, body aches, unusual tiredness;
jerky movements;
headache;
double vision;
swelling of your legs and feet;
tremors;
trouble speaking;
dizziness, drowsiness, tiredness;
problems with balance or eye movements; or
nausea, vomiting.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Gralise side effects (more detail)
