NHS warns gabapentin users: seek emergency help for severe reactions like breathing trouble or confusion.

The NHS advises gabapentin users to call 999 immediately if they experience difficulty breathing, facial or throat swelling, severe dizziness, sudden confusion, or hallucinations—signs of serious reactions. While most take the drug safely for nerve pain, epilepsy, or shingles with mild side effects like nausea or weight gain, rare but severe issues require urgent care. The medication, taken three times daily, can cause dependence with long-term use, and abrupt discontinuation may lead to withdrawal, so tapering is recommended.