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Does Sulfamethoxazole Interact with Mycophenolate Mofetil Hydrochloride?

CDI records a unknown classification for Sulfamethoxazole and Mycophenolate Mofetil Hydrochloride. The stored summary is: Examples Cyclosporine A, trimethoprim/sulfamethoxazole, bile acid sequestrants (cholestyramine), rifampin as well as aminoglycoside, cephalosporin, fluoroquinolone and penicillin classes of antimicrobials Drugs Modulating Glucuronidation Clinical Impact Concomitant use with drugs inducing glucuronidation decreases MPA systemic exposure, potentially reducing Mycophenolate Mofetil efficacy, while use with drugs inhibiting glucuronidation increases MPA systemic exposure [see Clinical Pharmacology (12.3) ] , which may increase the risk of Mycophenolate Mofetil related adverse reactions. Patients taking both medications should consult their healthcare provider before starting, stopping, or changing the dosage of either drug. This record was extracted from drug labeling through openFDA. NIH/NLM RxNorm is used for drug identities. The summary and severity classification are CDI's processed information, not a verbatim source quotation. Product, route, and patient circumstances matter.

Evidence status

A current label comparison is not yet available for this record. The summary and severity are stored CDI information; they have not been independently validated on this page against the exact product label.

Confirm the medicine, formulation, route, and applicable warning with your pharmacist or prescriber. Independent clinical review has not been recorded.

Stored CDI classification: Unknown
Management: Confirm exact products with your pharmacist
Data Source: U.S. FDA via OpenFDA

What To Tell Your Doctor or Pharmacist

If you are taking Sulfamethoxazole and your doctor is considering prescribing Mycophenolate Mofetil 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
Never stop or change either medication without first consulting your healthcare provider

💊 Sulfamethoxazole(Bactrim)+💊 Mycophenolate Mofetil Hydrochloride(Mycophenolate Mofetil)

Severity & Interaction Details

ℹ️

unknown

Stored CDI classification: unknown

A current source comparison has not been recorded for this claim. The stored classification does not determine the clinical significance for your exact products or circumstances.

Severity scale

MinorContra

On record

Yes

Drug A class

—

Drug B class

—

Source

FDA drug label - mycophenolate mofetil hydrochloride

What this means in plain English

Examples Cyclosporine A, trimethoprim/sulfamethoxazole, bile acid sequestrants (cholestyramine), rifampin as well as aminoglycoside, cephalosporin, fluoroquinolone and penicillin classes of antimicrobials Drugs Modulating Glucuronidation Clinical Impact Concomitant use with drugs inducing glucuronidation decreases MPA systemic exposure, potentially reducing Mycophenolate Mofetil efficacy, while use with drugs inhibiting glucuronidation increases MPA systemic exposure [see Clinical Pharmacology (12.3) ] , which may increase the risk of Mycophenolate Mofetil related adverse reactions.

About Sulfamethoxazole and Mycophenolate Mofetil Hydrochloride

Sulfamethoxazole is also sold under the brand name Bactrim. Mycophenolate Mofetil Hydrochloride additionally carries an FDA boxed warning, the FDA's strongest safety alert.

Source and Limitations

This record was produced by automated extraction from drug-label information, including AI processing. The summary and mechanism are not verbatim FDA quotations. The drug profiles below may describe different formulations from the source label. Confirm the exact product and route with your pharmacist. This page does not establish independent clinical review.

📖 Source: FDA drug label - mycophenolate mofetil hydrochloride

Recent research & FDA safety updates

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Auto-aggregated from PubMed E-utilities and FDA safety data.

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Comprehensive whole-genome sequencing reveals the resistome, virulome, and mobile genetic architecture of multidrug-resistant Acinetobacter baumannii.about Sulfamethoxazole · 2026-05

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Computational fluid dynamics and machine learning modeling of drug delivery by hydroxypropyl methylcellulose.about Sulfamethoxazole · 2026-05

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How this information is prepared: CDI uses automated extraction, including AI, to summarize drug labeling from openFDA and includes separately identified curated-reference records. RxNorm helps identify medications; it does not verify interaction claims. Extracted summaries and CDI severity classifications can contain errors and are not verbatim FDA statements or independent clinical review. Maintained by CheckDrugInteractions.com. See our methodology or report a correction at support@checkdruginteractions.com.

Data sourced from U.S. FDA drug labeling via openFDA and the NIH National Library of Medicine, supplemented with a small number of well-established interactions from curated clinical references. For informational purposes only. Always consult your pharmacist or physician.