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Codeine is a pain-reliever that can be addictive and may cause constipation. Its effectiveness can vary between individuals, so it should only be used for pain relief. View more
Gabapentin may be used to treat seizures and nerve pain, but it can cause dizziness or drowsiness. Gabapentin enacarbil (Horizant) is a prodrug of gabapentin. View more
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Lower-cost generic versions are available for both drugs.
Ratings & Reviews
Codeine has an average rating of 7.8 out of 10 from 60 ratings on Drugs.com. 69% of reviewers reported a positive effect, while 15% reported a negative effect.
Gabapentin has an average rating of 7.1 out of 10 from 2441 ratings on Drugs.com. 63% of reviewers reported a positive effect, while 22% reported a negative effect.
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Both drugs belong to different classes.
Common side effects for codeine include ataxia, dizziness, drowsiness, fatigue, fever, nystagmus disorder, sedated state, and viral infection. Common side effects for gabapentin include dizziness and drowsiness. View more
Pricing and Coupons
Prices for both drugs vary depending on quantity and dosage. View all prices
Dosage Form(s) Available
Both drugs are available in different forms.
Gabapentin has several brand names, including Fanatrex, Gabarone, Gralise, and Neurontin. Codeine does not have a brand name.
The half-life of codeine is 3.5 hours, while the half-life of gabapentin is 6 hours.
Codeine is a controlled substance with a high potential for abuse, while gabapentin is not subject to the Controlled Substances Act.
Both drugs have warnings for use during pregnancy. View full warnings
Both drugs have known interactions with other medications. View all interactions
Both drugs have interactions with alcohol and certain foods or lifestyles. View all interactions
There are no known disease interactions for either drug.
First Approval Date
Codeine was first approved on July 16, 2009, while gabapentin was first approved on December 30, 1993.
Neither drug is classified by the World Anti-Doping Agency.
Find more resources and treatment guides for both drugs. View more
The information provided on this page is for informational purposes only and should not be used as a substitute for professional medical advice. Always consult your healthcare provider before taking any medication.