Comparing Isoniazid vs Rifampin
| Isoniazid | Rifampin |
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| Isoniazid | Rifampin |
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Prescription only
Prescribed for Tuberculosis - Latent, Tuberculosis - Prophylaxis, Tuberculosis - Active, Mycobacterium kansasii. Isoniazid may also be used for purposes not listed in this medication guide. |
Prescription only
Prescribed for Bartonellosis, Endocarditis, Haemophilus influenzae Prophylaxis, Legionella Pneumonia, Leprosy, Leprosy - Borderline, Leprosy - Tuberculoid, Meningitis, Meningococcal Disease... View more |
Related suggestions Tuberculosis, Latent
Tuberculosis, Active
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| More about Isoniazid | More about Rifampin | ||||||||||||||||
| Ratings & Reviews | |||||||||||||||||
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Isoniazid has an average rating of 5.1 out of 10 from a total of 28 ratings on Drugs.com. 21% of reviewers reported a positive effect, while 29% reported a negative effect. |
Rifampin has an average rating of 6.1 out of 10 from a total of 22 ratings on Drugs.com. 36% of reviewers reported a positive effect, while 18% 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. | |||||||||||||||||
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View all Isoniazid side effects |
View all Rifampin side effects |
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| Drug Class | |||||||||||||||||
| Generic Availability | |||||||||||||||||
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Lower cost generic |
Lower cost generic |
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| Pricing and Coupons * Prices are without insurance | |||||||||||||||||
View all Isoniazid prices |
View all Rifampin prices |
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| Dosage Forms | |||||||||||||||||
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| Brand Names | |||||||||||||||||
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N/A |
Rifadin, Rifadin IV, Rimactane | ||||||||||||||||
| Half Life Drug half-life is the time required for plasma concentration to reduce to half its original value. | |||||||||||||||||
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3.1 hours |
4 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. |
Not a controlled drug
Is not subject to the Controlled Substances Act. |
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| Pregnancy Category | |||||||||||||||||
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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. |
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| Drug Interactions | |||||||||||||||||
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A total of 723 drugs are known to interact with Isoniazid:
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A total of 762 drugs are known to interact with Rifampin:
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| Alcohol/Food/Lifestyle Interactions | |||||||||||||||||
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| Disease Interactions | |||||||||||||||||
| First Approval Date | |||||||||||||||||
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November 17, 1952 |
May 21, 1971 |
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| WADA Class View classifications | |||||||||||||||||
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N/A |
N/A |
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| More Information | |||||||||||||||||
| Patient Resources | |||||||||||||||||
| Professional Resources | |||||||||||||||||
| Related Treatment Guide | |||||||||||||||||
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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.