Comparing Effexor vs Phentermine
| Effexor (venlafaxine) | Phentermine |
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| Effexor (venlafaxine) | Phentermine |
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Prescription only
Effexor is an antidepressant that may cause a discontinuation syndrome if abruptly stopped after long-term administration. Prescribed for Autism, Major Depressive Disorder, Depression, Bulimia... View more |
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 |
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| More about (venlafaxine) | More about Phentermine | ||||||||
| Ratings & Reviews | |||||||||
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Effexor has an average rating of 5.8 out of 10 from a total of 490 ratings on Drugs.com. 44% of reviewers reported a positive effect, while 33% reported a negative effect. |
Phentermine has an average rating of 8.6 out of 10 from a total of 3015 ratings on Drugs.com. 82% of reviewers reported a positive effect, while 5% 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 Effexor side effects |
View all Phentermine 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 | |||||||||
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We could not find an exact match for this medicine. Try searching the Price Guide directly. |
View all Phentermine prices |
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| Dosage Forms | |||||||||
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N/A |
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| Brand Names | |||||||||
| Other venlafaxine brands include: Effexor XR | Adipex-P, Atti-Plex P, Lomaira | ||||||||
| Half Life Drug half-life is the time required for plasma concentration to reduce to half its original value. | |||||||||
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4 hours |
20 hours |
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| CSA Schedule 1 View glossary of CSA terms | |||||||||
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Not a controlled drug
Is not subject to the Controlled Substances Act. |
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. |
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| Pregnancy Category | |||||||||
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Category C
Risk cannot be ruled out
See the full pregnancy warnings document. |
Category X
Not for use in pregnancy
See the full pregnancy warnings document. |
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| Drug Interactions | |||||||||
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A total of 702 drugs are known to interact with Effexor:
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A total of 196 drugs are known to interact with Phentermine:
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| Alcohol/Food/Lifestyle Interactions | |||||||||
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| Disease Interactions | |||||||||
| First Approval Date | |||||||||
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N/A |
August 14, 1973 |
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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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N/A |
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| Professional Resources | |||||||||
| 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.
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Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.