Pregabalin vs Gabapentin
Brand names
Lyrica
Neurontin
Drug Class
Anticonvulsant, Neuropathic Pain Agent
Anticonvulsant, Neuropathic Pain Agent
Uses
Nerve pain (neuropathy), Fibromyalgia, Seizures (partial onset), Generalized anxiety disorder (GAD)
Nerve pain (neuropathy), Seizures (partial onset), Postherpetic neuralgia
Mechanism of Action
Modulates calcium channels to reduce neurotransmitter release
Modulates calcium channels to reduce neurotransmitter release
Dosage Forms
Capsules, Oral Solution
Capsules, Tablets, Oral Solution
Starting Dose
75 mg twice daily
300 mg once daily
Maximum Dose
600 mg per day
3600 mg per day
Half-Life
6.3 hours
5 to 7 hours
Bioavailability
High and consistent (>90%)
Decreases with higher doses (60-70%)
Onset of Action
Faster onset (within a few days)
Slower onset (may take weeks)
Common Side Effects
Dizziness, sleepiness, dry mouth, weight gain
Dizziness, sleepiness, fatigue, ataxia
Pregnancy Category
C (Risk cannot be ruled out)
C (Risk cannot be ruled out)
Controlled Substance
Schedule V (low potential for abuse)
Not a controlled substance
Cost
Typically higher
Typically lower
Withdrawal Symptoms
Yes, requires tapering
Yes, requires tapering
FDA Approval
2004
1993
Coupon
Frequently Asked Questions
What is the difference between Pregabalin and Gabapentin?
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Pregabalin and Gabapentin both treat nerve pain, seizures, and anxiety, but Pregabalin works faster and is often more potent at lower doses. Gabapentin is usually less expensive and more commonly prescribed.
Which is better for nerve pain: Pregabalin or Gabapentin?
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Both drugs help with nerve pain, but Pregabalin may relieve symptoms faster and more effectively in some people. Gabapentin is still widely used and may work just as well depending on the person.
Is Pregabalin stronger than Gabapentin?
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Yes, Pregabalin is typically considered stronger than Gabapentin. A lower dose of Pregabalin can offer the same or better relief compared to higher doses of Gabapentin.
Can I switch from Gabapentin to Pregabalin?
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Yes, but only under a doctor's guidance. Switching medications may improve symptoms or reduce side effects, but dosages need careful adjustment to avoid withdrawal or overlap.