Drug interactions
Diflunisal + Sodium bicarbonate
Severity: Minor
Diflunisal and Sodium bicarbonate: 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
Urinary alkalinization increases the renal excretion of salicylates and can lower their levels. Diflunisal is a salicylate derivative, so the effect may be modest but could reduce effect with prolonged bicarbonate use.
What this interaction means in plain words
Diflunisal and Sodium bicarbonate have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Diflunisal belongs to Musculoskeletal; Sodium bicarbonate belongs to Gastrointestinal Tract.
Why it happens
Higher urinary pH ionizes salicylic acid derivatives, reducing tubular reabsorption and increasing excretion.
What to do
Monitor analgesic response if regular bicarbonate is used, and adjust diflunisal dose if efficacy falls.
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?
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Other interactions of Diflunisal
- Diflunisal + Ketorolac Contraindicated
- Diflunisal + Ketorolac intranasal Contraindicated
- Acemetacin + Diflunisal Major
- Acetazolamide + Diflunisal Major
- Alteplase + Diflunisal Major
- Amiloride + Diflunisal Major
Other interactions of Sodium bicarbonate
- Acetylsalicylic acid + Sodium bicarbonate Moderate
- Alendronate + Sodium bicarbonate Moderate
- Amantadine + Sodium bicarbonate Moderate
- Carbonyl iron + Sodium bicarbonate Moderate
- Cefditoren + Sodium bicarbonate Moderate
- Cefpodoxime + Sodium bicarbonate Moderate
Frequently asked questions
Can I take Diflunisal with Sodium bicarbonate?
MediHelp rates the interaction as minor. Diflunisal and Sodium bicarbonate have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Urinary alkalinization increases the renal excretion of salicylates and can lower their levels. Diflunisal is a salicylate derivative, so the effect may be modest but could reduce effect with prolonged bicarbonate use.
How serious is the interaction between Diflunisal and Sodium bicarbonate?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor analgesic response if regular bicarbonate is used, and adjust diflunisal dose if efficacy falls.
What other medicines interact with Diflunisal?
MediHelp also lists interactions of Diflunisal with, for example, Ketorolac, Ketorolac intranasal, Acemetacin. The full list is on the Diflunisal page.
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