Cautions with other medicines
Some medicines may affect how gabapentin works or increase the chance of you having side effects.
Antacids can reduce the amount of gabapentin that the body takes in so it does not work as well.
To stop this happening, if you need to take an antacid, take it at least 2 hours before or after your dose of gabapentin.
Check with a pharmacist or your doctor if you're taking any other medicines, including:
- strong painkillers, such as morphine – these can make you very tired and dizzy when you start taking gabapentin
- antidepressants, such as amitriptyline or fluoxetine
- antipsychotic medicines for mental health problems like schizophrenia or bipolar disorder, such as olanzapine
These are not all the medicines that may cause problems if you take them with gabapentin. For a full list, see the leaflet inside your medicine packet.
Mixing gabapentin with herbal remedies or supplements
Taking herbal remedies and supplements that can make you feel dizzy or drowsy while you're taking gabapentin could make these side effects worse.
There's not enough information to say that other herbal remedies or supplements are safe to take with gabapentin. They're not tested in the same way as pharmacy and prescription medicines. They're generally not tested for the effect they have on other medicines.
Important: Medicine safety
Tell your doctor or pharmacist if you're taking any other medicines, including herbal remedies, vitamins or supplements.