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Drug interactions

Dicloxacillin + Mycophenolate mofetil

Severity: Minor

Dicloxacillin and Mycophenolate mofetil: minor interaction.

Last updated

For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.

Summary

Antibacterials that alter gut flora, such as penicillins, may lower exposure to mycophenolic acid. This could reduce immunosuppression and raise the risk of rejection, although the effect is not well established for dicloxacillin.

What this interaction means in plain words

Dicloxacillin and Mycophenolate mofetil have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.

Dicloxacillin belongs to Anti Bacterial; Mycophenolate mofetil belongs to Miscellaneous.

Evidence level: Low

Why it happens

Possible reduction of enterohepatic recirculation of mycophenolic acid through changes in intestinal flora that deconjugate its glucuronide.

What to do

No routine dose change is needed; watch for signs of reduced immunosuppression during and after a course of dicloxacillin. Consider mycophenolic acid level monitoring if rejection is suspected.

What to ask your pharmacist

  • Is there anything I should notice while taking both?
  • Do I need to tell my doctor at the next visit?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Dicloxacillin with Mycophenolate mofetil?

MediHelp rates the interaction as minor. Dicloxacillin and Mycophenolate mofetil have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Antibacterials that alter gut flora, such as penicillins, may lower exposure to mycophenolic acid. This could reduce immunosuppression and raise the risk of rejection, although the effect is not well established for dicloxacillin.

How serious is the interaction between Dicloxacillin and Mycophenolate mofetil?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine dose change is needed; watch for signs of reduced immunosuppression during and after a course of dicloxacillin. Consider mycophenolic acid level monitoring if rejection is suspected.

What other medicines interact with Mycophenolate mofetil?

MediHelp also lists interactions of Mycophenolate mofetil with, for example, Adenovirus types 4 and 7 live, Bcg vaccine live, Influenza virus vaccine quadrivalent intranasal. The full list is on the Mycophenolate mofetil page.

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