Gabapentin is taken orally, usually with or without food, as directed by a doctor. It is important to follow the dosing instructions provided by your doctor and not to take more or less than the prescribed amount. Like all medications, gabapentin can cause side effects, and it is important to be aware of these and to contact your doctor if you experience any problems while taking the medication. Some common side effects of gabapentin include drowsiness, dizziness, and headache. It is important to keep in mind that gabapentin is a prescription medication and should only be used under the supervision of a doctor. If you have been prescribed gabapentin, it is important to take it exactly as directed and to follow all of the precautions and warnings provided by your doctor.