Before you begin using a medication, be sure to inform your doctor of any medical conditions or Allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health. These factors may affect how you should use Gabapentin.

Alcohol and other medications that cause drowsiness: People taking Gabapentin should not combine it with alcohol and avoid combining it with other medications, such as narcotic pain relievers, that cause drowsiness. Doing so can cause additional drowsiness and reduced breathing as well as increase the risk of opioid overdose, which can be dangerous and possibly life threatening.

Difficulty breathing: Gabapentin can cause serious and life-threatening breathing problems. If you have breathing or lung problems, decreased kidney function, are taking other medications that can slow breathing, or if you are a senior, you are more at risk of experiencing breathing difficulties. If you experience slowed breathing or difficulty breathing, seek immediate medical attention.

Drowsiness/reduced alertness: If you have uncontrolled epilepsy, do not drive or handle potentially dangerous machinery. Gabapentin may cause drowsiness, dizziness, or problems with coordination. Avoid any activity requiring mental alertness or physical coordination until you determine how gabapentin affects you.

Hypersensitivity syndrome: A Anaphylaxis (severe allergic reaction) called hypersensitivity syndrome has occurred for some people with the use of gabapentin. Stop taking the medication and get immediate medical attention if you have symptoms of a severe allergic reaction, including fever, swollen glands, yellowing of the skin or eyes, or flu-like symptoms with skin rash or blistering.

Kidney function: Kidney Disease or reduced kidney function may cause Gabapentin to build up in the body, causing side effects. If you have reduced kidney function or kidney disease, discuss with your doctor how Gabapentin may affect your medical condition, how your medical condition may affect the dosing and effectiveness of Gabapentin, and whether any special monitoring is needed.

Stopping the medication: As with other medications used to control seizures, stopping gabapentin suddenly could increase the risk of seizures. Do not stop gabapentin suddenly. Ask your doctor how to safely and gradually stop the medication.

Suicidal or agitated behaviour: People taking Gabapentin may feel agitated (restless, anxious, aggressive, emotional, and feeling not like themselves), or they may want to hurt themselves or others. If you experience these side effects or notice them in a family member who is taking Gabapentin, contact your doctor immediately. You should be closely monitored by your doctor for emotional and behaviour changes while taking Gabapentin.

Pregnancy: Gabapentin crosses the placenta and may harm the developing baby if it is taken by the mother while she is pregnant. It should not be used during pregnancy unless the benefits outweigh the risks. If you become pregnant while taking Gabapentin, contact your doctor immediately.

Breast-feeding: Gabapentin passes into breast milk. If you are a breast-feeding mother and are taking gabapentin, it may affect your baby. Talk to your doctor about whether you should continue breast-feeding.

Children: The safety and effectiveness of using Gabapentin have not been established for children.

Seniors: Seniors are at an increased risk of side effects and may require a dose of Gabapentin that is lower than usual due to reduced kidney function.