Comparing Phentermine vs Wellbutrin
| Phentermine | Wellbutrin (bupropion) |
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| Phentermine | Wellbutrin (bupropion) |
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Prescription only
Phentermine may be used short-term as an aid to weight loss; however, it can be addictive and tolerance may develop to its weight-losing effects, rendering it less effective with time. Prescribed for... View more |
Prescription only
Wellbutrin may be used in the treatment of depression; however, side effects may include insomnia, neuropsychiatric adverse events, or seizures. It carries a black box warning because it may cause... View more |
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| More about Phentermine | More about Wellbutrin (bupropion) | ||||||||
| Ratings & Reviews | |||||||||
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Phentermine has an average rating of 8.6 out of 10 from a total of 3014 ratings on Drugs.com. 82% of reviewers reported a positive effect, while 5% reported a negative effect. |
Wellbutrin has an average rating of 6.8 out of 10 from a total of 757 ratings on Drugs.com. 58% of reviewers reported a positive effect, while 23% reported a negative effect. |
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| Side Effects Experienced by Users Side effects are reported in Drugs.com user reviews and not clinically verified. | |||||||||
View all Phentermine side effects |
View all Wellbutrin side effects |
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| Drug Class | |||||||||
| Generic Availability | |||||||||
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Lower cost generic |
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| Pricing and Coupons * Prices are without insurance | |||||||||
View all Phentermine prices |
We could not find an exact match for this medicine. Try searching the Price Guide directly. |
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| Dosage Forms | |||||||||
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| Brand Names | |||||||||
| Adipex-P, Atti-Plex P, Lomaira | Other bupropion brands include: Aplenzin, Budeprion, Budeprion SR, Forfivo XL, Wellbutrin SR, Wellbutrin XL | ||||||||
| Half Life Drug half-life is the time required for plasma concentration to reduce to half its original value. | |||||||||
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20 hours |
30 hours |
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| CSA Schedule 1 View glossary of CSA terms | |||||||||
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Some potential for abuse
Has a low potential for abuse relative to those in schedule 3. It has a currently accepted medical use in treatment in the United States. Abuse may lead to limited physical dependence or psychological dependence relative to those in schedule 3. |
Not a controlled drug
Is not subject to the Controlled Substances Act. |
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| Pregnancy Category | |||||||||
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Category X
Not for use in pregnancy
See the full pregnancy warnings document. |
Category C
Risk cannot be ruled out
See the full pregnancy warnings document. |
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| Drug Interactions | |||||||||
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A total of 196 drugs are known to interact with Phentermine:
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A total of 559 drugs are known to interact with Wellbutrin:
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| Alcohol/Food/Lifestyle Interactions | |||||||||
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| Disease Interactions | |||||||||
| First Approval Date | |||||||||
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August 14, 1973 |
December 30, 1985 |
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| WADA Class View classifications | |||||||||
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N/A |
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| More Information | |||||||||
| Patient Resources | |||||||||
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| Related Treatment Guide | |||||||||
1 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.