Gabapentin 300 mg Side Effects

Gabapentin is an anticonvulsant medication used in the treatment of epileptic seizures. Gabapentin is also used to relieve the pain of postherpetic neuralgia (PHN; the burning, stabbing pain or aches that may last for months or years after an attack of shingles), reports Medline Plus. Gabaptentin comes in tablet, capsule and liquid formulations.

Harmful Thoughts and Depression

You may experience harmful thoughts while on Gabapentin 300 mg. Harmful thoughts may include suicidal thoughts. Depression may also occur as a result of Gabapentin. Tell your doctor if you have new or worsening depression or suicidal thoughts during the first several months of treatment, or whenever your dose is changed, states Drugs.com.

Headache and Dizziness

You may experience headache and dizziness while taking Gabapentin 300 mg. These side effect may diminish over time as your body begins to adjust to Gabapentin. Use caution while driving or operating hazardous machinery until you know how this medication will affect you. Your headache may be relieved by taking an over-the-counter pain medication such as acetaminophen or ibuprofen, as per your doctor's consent. If headache and dizziness become severe and begin to impact your daily lifestyle speak to your health care provider about Gabapentin.

Drowsiness and Weakness

Drowsiness and weakness are possible side effects of Gabapentin. You may seem more sleepy and fatigued than usual. Get an adequate amount of sleep each night and take a mid-day nap if possible to help you feel more awake throughout the day.

Nausea, Diarrhea and Constipation

You may experience nausea, diarrhea and constipation while taking Gabapentin 300 mg. Heartburn can also occur. Small dietary changes may help alleviate gastrointestinal effects. Eating a bland diet which consists of smaller meals more frequently can improve nausea and diarrhea. Increasing fruits, vegetables and fiber intake may ease constipation. If dietary changes are unsuccessful, consider trying an over-the-counter stool softener such as Colace. Remaining in an upright position for at least 30 minutes following meals can help prevent heartburn.