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Does Rifabutin Interact with Atovaquone And Proguanil Hydrochloride?

Rifabutin and Atovaquone And Proguanil Hydrochloride have a contraindicated drug interaction according to U.S. FDA drug labeling data. Rifabutin reduces atovaquone concentrations; concomitant use is not recommended. The mechanism involves reduction of atovaquone concentrations. Patients taking both medications should consult their healthcare provider before starting, stopping, or changing the dosage of either drug. This information is based on official FDA drug labeling sourced from OpenFDA and the NIH National Library of Medicine.

Severity
Contraindicated
Rifabutin Class
Rifamycin Antimycobacterial
Atovaquone And Proguanil Hydrochloride Class
Antimalarial
Management
Do not take together
Data Source
U.S. FDA via OpenFDA

How This Interaction Works

The interaction between Rifabutin and Atovaquone And Proguanil Hydrochloride occurs because reduction of atovaquone concentrations. Clinically, this means rifabutin reduces atovaquone concentrations; concomitant use is not recommended. Because of the severity of this interaction, these medications are contraindicated — meaning they should not be taken together under any circumstances. If you are currently taking both, contact your healthcare provider immediately to discuss alternatives.

What To Tell Your Doctor or Pharmacist

If you are taking Rifabutin and your doctor is considering prescribing Atovaquone And Proguanil Hydrochloride (or vice versa), make sure to:

  • Inform your doctor and pharmacist of all current medications, including over-the-counter drugs and supplements
  • Ask whether the benefits of combining these medications outweigh the risks for your specific situation
  • Ask what symptoms to watch for that would indicate the interaction is causing problems
  • Ask about alternative medications that do not interact with your current regimen
  • Ask how frequently you should be monitored while these are co-prescribed
  • Never stop or change either medication without first consulting your healthcare provider
💊 Rifabutin(Rifabutin)+💊 Atovaquone And Proguanil Hydrochloride(Atovaquone And Proguanil Hcl)

Severity & Interaction Details

⛔
contraindicated
Avoid this combination
FDA labeling lists this pair as contraindicated. The risk outweighs the benefit in nearly all cases.
Severity scale
MinorContra
On record
Yes
Drug A class
Rifamycin Antimycobacterial
Drug B class
Antimalarial
Source
NLP:atovaquone and proguanil hydrochloride

What this means in plain English

Rifabutin reduces atovaquone concentrations; concomitant use is not recommended.

What the FDA label says

"Reduction of atovaquone concentrations"

📖 Source: NLP:atovaquone and proguanil hydrochloride

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Data sourced from U.S. FDA drug labeling via openFDA and the NIH National Library of Medicine. For informational purposes only. Always consult your pharmacist or physician.