Gabapentin is a medication originally developed for seizures and nerve (neuropathic) pain. It's a structural cousin of the calming neurotransmitter GABA, but — importantly — it does not act on GABA receptors. Instead, it binds to a subunit of the voltage-gated calcium channels in nerve cells, which dampens the release of excitatory signals and calms overactive nerve activity. That steadying effect on nerve signalling is why it's sometimes used off-label to reduce the involuntary movements of tremor. How much it helps varies from person to person, and it's often weighed alongside, or combined with, other options.
Like any medication, gabapentin has side effects worth knowing about before starting it. These are general patterns, not a substitute for your prescriber's advice.
Common side effects
Dizziness (which can raise the risk of falls, especially in older adults), fatigue, and drowsiness are among the most frequently reported. Because they can affect alertness and coordination, doctors often advise caution with driving or operating machinery until you know how the medication affects you (MedlinePlus, Gabapentin).
Longer-term concerns
With ongoing use, the body can become accustomed to gabapentin, so stopping suddenly can trigger withdrawal symptoms — which is why prescribers generally taper the dose gradually rather than stopping it abruptly. Some long-term users report cognitive effects such as trouble concentrating or memory changes, and persistent fatigue. Regular review with your doctor helps catch and manage these.
If gabapentin's side effects are hard to tolerate — or you simply want something that works without adding to your medication load — a wearable can help with the hand tremor directly. The Steadi-3 Plus is an FDA-registered Class I medical device that steadies the hand mechanically, using a passive magnetic vibration absorber (tuned mass damping) with no electronics, batteries, or systemic effects. A placebo-controlled study measured the difference: wearers came out ahead in 84% of cases versus going without any device, and in 70% of cases versus a sham glove (Steadiwear, Steadi-3 Plus validation study). It isn't a medication and doesn't treat or cure the tremor — it steadies the hand for tasks like eating, writing, and holding a cup, and it can be used alongside whatever your doctor prescribes.
Because it has no systemic side effects, a stabilizing glove can complement medication rather than compete with it — a useful option to raise with your prescriber, especially if side effects are a concern.
Gabapentin isn't right for everyone, and some situations call for extra caution — all of which your doctor will weigh before prescribing it:
- Allergy — anyone who has had an allergic reaction to gabapentin or its ingredients should avoid it and tell their doctor.
- Severe kidney disease — the kidneys clear gabapentin from the body, so reduced kidney function can let it build up; this needs close monitoring and dose adjustment by a clinician.
- Pregnancy and breastfeeding — gabapentin can cross the placenta, so it's used in pregnancy only when the benefits clearly outweigh the risks; tell your doctor if you are or may become pregnant.
This isn't a complete list, and it's why starting, changing, or stopping gabapentin should always happen under medical supervision rather than on your own.
Interest in gabapentin for tremor has grown, particularly where other treatments haven't worked. The American Academy of Neurology's evidence-based guideline rates gabapentin as possibly effective as a monotherapy for Essential Tremor — useful for some people, but not a guaranteed or first-choice option (Zesiewicz et al., Neurology, 2011). It's also been explored for tremors from multiple sclerosis and drug-induced tremor. Notably, gabapentin is not FDA-approved specifically for tremor, so when it's used this way it's prescribed off-label, with a doctor weighing the likely benefit against the side effects for each person.
