UK licensed dosage ranges by indication
According to the British National Formulary (BNF) and electronic Medicines Compendium (emc), recommended adult dosing principles for individuals with normal kidney function follow these guidelines:
| Indication | Typical Starting Dose | Gradual Titration | Maximum Daily Dose |
|---|---|---|---|
| Neuropathic Pain | 150mg daily (75mg twice daily or 50mg three times daily) | May increase to 300mg daily after 3–7 days; if needed, up to 600mg after another 7 days | 600mg daily |
| Generalised Anxiety Disorder | 150mg daily (divided into 2 or 3 doses) | May increase to 300mg daily after 1 week; can step to 450mg, then 600mg at weekly intervals | 600mg daily |
| Focal Epilepsy (Add-on) | 150mg daily (divided into 2 or 3 doses) | May increase to 300mg daily after 1 week; maximum 600mg daily after further week | 600mg daily |
| Older or Frail Adults | 25mg to 50mg daily (often taken at bedtime initially) | Slow, conservative titration based on tolerance and fall risk | Determined by renal clearance |
How to take your medication correctly
Follow the exact instructions on your pharmacy dispensing label:
- Even spacing: Try to take your doses at the same times every day. If prescribed twice daily, space doses roughly 12 hours apart (e.g., 8:00 AM and 8:00 PM). If three times daily, space them approximately 8 hours apart.
- Swallow capsules whole: Swallow hard capsules with a full glass of water. Do not chew, open, break, or crush the capsules unless explicitly directed by a pharmacist or specialist.
- With or without food: Pregabalin can be taken before, during, or after meals. Taking it with a meal may slightly delay how quickly it enters the bloodstream, which can help lessen initial dizziness or nausea.
- Oral liquid solution: If prescribed the oral liquid solution (usually 20mg/ml), always use the oral dosing syringe provided with your bottle. Never use a standard kitchen teaspoon, as it cannot measure exact milligram quantities accurately.
Why gradual dose titration is necessary
Starting at a maximum dose of 300mg or 600mg immediately would cause overwhelming sedation, severe dizziness, confusion, and ataxia (loss of physical balance) in most people.
By starting low (such as 25mg, 50mg, or 75mg) and slowly increasing the dose every 3 to 7 days, your central nervous system adapts to the medication's dampening effects on neurotransmission. This "start low and go slow" approach achieves the best balance between symptom control and tolerable side effects. Learn more about onset timing in our how long Pregabalin takes to work guide.
What to do if you miss a dose
Forgetting a dose happens occasionally. Follow these standard NHS safety guidelines:
- If you remember within a few hours: Take the missed dose as soon as you remember.
- If it is almost time for your next scheduled dose: Skip the missed capsule completely and take your next dose at the regular time.
- Never take a double dose: Never take two capsules at once or extra medication to make up for a forgotten dose. Doing so can cause sudden intoxication, drowsiness, and increased risk of falls.
What if you take too much?
Taking too much Pregabalin can cause extreme drowsiness, confusion, agitation, slurred speech, loss of balance, or seizures. If you or someone else has taken more than prescribed:
- Call NHS 111 immediately for advice if the person is alert and breathing normally.
- Call 999 or go to your nearest A&E immediately if the person is unresponsive, struggling to breathe, or experiencing a seizure. Read our dedicated Pregabalin overdose guide.
Kidney disease: Why dose adjustments are vital
Over 98% of Pregabalin is cleared from the body unchanged by the kidneys. If kidney filtration (measured by estimated glomerular filtration rate [eGFR] or creatinine clearance) is reduced, Pregabalin accumulates in the blood, leading to toxicity even at standard doses.
Prescribing clinicians must calculate your creatinine clearance before prescribing and adjust daily doses accordingly:
- Normal function (≥ 60 ml/min): Standard doses (150mg to 600mg daily in 2–3 divided doses).
- Moderate impairment (30–60 ml/min): Starting dose 75mg daily; maximum 300mg daily in 2–3 divided doses.
- Severe impairment (15–30 ml/min): Starting dose 25–50mg daily; maximum 150mg daily in 1–2 divided doses.
- Haemodialysis: Requires adjusted daily dosing plus an additional supplementary dose immediately following each 4-hour dialysis session.
For more details, see our comprehensive Pregabalin and kidney disease guide.
Why you must never stop or reduce your dose alone
Pregabalin causes physiological adaptation in the central nervous system. Stopping suddenly after taking it regularly for as little as 2 to 4 weeks can trigger severe withdrawal symptoms, including acute insomnia, intense anxiety, nausea, profuse sweating, diarrhoea, flu-like symptoms, and rebound pain. In people taking it for epilepsy, sudden discontinuation can precipitate status epilepticus (continuous, life-threatening seizures).
If you and your doctor decide to stop treatment, NICE guidelines require tapering the dose gradually over a minimum of 1 to 4 weeks (or longer for high doses).