Gabapentin belongs to a group of medications called anticonvulsants. It works by reducing the pain signals sent out from the damaged nerves and can be used as adjunctive therapy or monotherapy for focal seizures, neuropathic pain, prevention of migraines, and menopausal symptoms, particularly hot flushes in women.
Gabapentin can be taken orally as tablets or capsules. The dosages for some different uses are listed below:
For neuropathic pain
Oral
Adult
Day 1: 300 mg once daily
Day 2: 300 mg twice daily
Day 3: 300 mg 3 times daily
OR
Day 1: 300 mg 3 times daily
Then increase 300 mg every 2-3 days in 3 divided doses
Dosage should be adjusted according to response and the maximum dose is 3.6 g per day
For prevention of migraine
Oral
Adult
300 mg daily, then increase to up to 2.4 g daily in divided doses; Adjust the dosage according to response
For menopausal symptoms, particularly hot flushes
Oral
Adult
300 mg 3 times daily, the initial dose should be lowered and titrated up over three days
Common side effects of Gabapentin include swelling of the arms and legs, weight gain, dizziness and drowsiness, and dry mouth.
Common dosing schedule:
Gabapentin can be taken with or without food.
This schedule is for reference only, adjustments may be made according to individual needs.
Some common medications Gabapentin may interact with:
Please notify your doctor or pharmacist if you are taking the above medication, dosage adjustments might be needed.
In Hong Kong, Gabapentin is a prescription only medicine, and requires a prescription from a doctor to be purchased in a pharmacy. It can also be obtained from doctors. To find a pharmacy near you, refer to the list of pharmacies (“Authorized Sellers of Poisons”) from the Hong Kong Department of Health.
For more information about drug names and ingredients, you can visit Hong Kong’s Drug Office at https://www.drugoffice.gov.hk
Need more information?
For detailed information about the use of Gabapentin in children, pregnancy and breastfeeding, and for questions about drug interactions, please check with your pharmacist or doctor.
Disclaimer: our goal is to provide you with the most relevant drug information and common dosage for Hong Kong. This information does not constitute medical advice. For specific treatment recommendations and advice, always discuss with your doctor or pharmacist, and follow the instructions included with your specific medicine.
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