Comparing Gabapentin vs Venlafaxine

View side-by-side comparisons of medication uses, ratings, cost, side effects and interactions.
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Gabapentin

Venlafaxine

Gabapentin may be used in the treatment of partial-onset seizures and nerve pain but is likely to cause dizziness or drowsiness. Gabapentin enacarbil (brand name Horizant), a prodrug of gabapentin... View more

Venlafaxine is an antidepressant that may also be used for mood disorders and off-label for some other conditions such as hot flashes. It may cause a discontinuation syndrome if abruptly stopped... View more

Prescription only

Ratings & Reviews

View all 2229 reviews

View all 2422 reviews

Drug Class

Gamma-aminobutyric acid analogs

Serotonin-norepinephrine reuptake inhibitors

Side Effects

Commonly reported side effects include: ataxia, dizziness, drowsiness, fatigue, fever, nystagmus disorder, sedated state, and viral infection.

See the full gabapentin side effects document.

Commonly reported side effects include: anorgasmia, asthenia, constipation, dizziness, drowsiness, insomnia, nausea, nervousness, headache, anorexia, decreased appetite, delayed ejaculation, diaphoresis, and xerostomia.

See the full venlafaxine side effects document.

Pricing and Coupons

* Prices are without insurance

Quantity	100 each
Dosage	300 mg
Per Unit^*	$0.22
Cost^*	$22.42

View all gabapentin prices

Quantity	50 each
Dosage	150 mg
Per Unit^*	$0.68
Cost^*	$34.06

View all venlafaxine prices

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Generic Availability

Yes (this medicine)

Dosage Form(s) Available

Oral capsule
Oral solution
Oral tablet

Oral capsule, extended release
Oral tablet
Oral tablet, extended release

Brand Names

Fanatrex, Gabarone, Gralise, Neurontin Effexor, Effexor XR

Half Life

The half-life of a drug is the time taken for the plasma concentration of a drug to reduce to half its original value.

6 hours

4 hours

CSA Schedule**

View glossary of terms.

Not a controlled drug

Is not subject to the Controlled Substances Act.

Not a controlled drug

Is not subject to the Controlled Substances Act.

Pregnancy Category

Category C Risk cannot be ruled out

See the full Pregnancy Warnings document.

Category C Risk cannot be ruled out

See the full Pregnancy Warnings document.

Drug Interactions

A total of 224 drugs are known to interact with gabapentin:

26 major drug interactions (142 brand and generic names)
188 moderate drug interactions (817 brand and generic names)
10 minor drug interactions (52 brand and generic names)

A total of 645 drugs are known to interact with venlafaxine:

139 major drug interactions (556 brand and generic names)
501 moderate drug interactions (2180 brand and generic names)
5 minor drug interactions (22 brand and generic names)

Alcohol/Food/Lifestyle Interactions

Alcohol can increase the nervous system side effects of gabapentin such as dizziness, drowsiness... View more

Alcohol can increase the nervous system side effects of venlafaxine such as dizziness, drowsiness... View more

Disease Interactions

First Approval Date

December 30, 1993

December 28, 1993

WADA Class

View World Anti-Doping Agency classifications.

N/A

More Information

Consumer Resources

Professional Resources

Related Treatment Guide

** The Controlled Substances Act (CSA) schedule information displayed applies to substances regulated under federal law. There may be variations in CSA schedules between individual states.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Medical Disclaimer