Drug interactions
Methyclothiazide + Methylprednisolone
Severity: Moderate
Methyclothiazide and Methylprednisolone: moderate 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
Both drugs promote urinary potassium loss, so combined use can cause additive hypokalemia. Low potassium may provoke arrhythmias and muscle weakness, especially with digoxin or QT-prolonging drugs.
What this interaction means in plain words
Methyclothiazide and Methylprednisolone can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Additive potassium wasting from corticosteroid mineralocorticoid activity and thiazide-induced increased distal sodium delivery.
What to do
Monitor serum potassium and magnesium periodically and supplement potassium if levels fall.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Methylprednisolone
- Bcg vaccine live + Methylprednisolone Contraindicated
- Measles mumps and rubella vaccine live + Methylprednisolone Contraindicated
- Measles mumps rubella and varicella vaccine live + Methylprednisolone Contraindicated
- Measles vaccine + Methylprednisolone Contraindicated
- Methylprednisolone + Mifepristone Contraindicated
- Methylprednisolone + Rubella vaccine Contraindicated
Frequently asked questions
Can I take Methyclothiazide with Methylprednisolone?
MediHelp rates the interaction as moderate. Methyclothiazide and Methylprednisolone can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Both drugs promote urinary potassium loss, so combined use can cause additive hypokalemia. Low potassium may provoke arrhythmias and muscle weakness, especially with digoxin or QT-prolonging drugs.
How serious is the interaction between Methyclothiazide and Methylprednisolone?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor serum potassium and magnesium periodically and supplement potassium if levels fall.
What other medicines interact with Methylprednisolone?
MediHelp also lists interactions of Methylprednisolone with, for example, Bcg vaccine live, Measles mumps and rubella vaccine live, Measles mumps rubella and varicella vaccine live. The full list is on the Methylprednisolone page.
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