Drug interactions
Moxifloxacin + Sodium bicarbonate
Severity: Moderate
Moxifloxacin and Sodium bicarbonate: 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
Antacid-type products may reduce the absorption of oral moxifloxacin. The effect on moxifloxacin is smaller than for some other fluoroquinolones, but it can still lower antibiotic exposure.
What this interaction means in plain words
Moxifloxacin and Sodium bicarbonate 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.
Moxifloxacin belongs to Anti Bacterial; Sodium bicarbonate belongs to Gastrointestinal Tract.
Why it happens
Changes in gastric pH and sodium bicarbonate-related binding may reduce absorption of the drug; this is less certain than metal cation chelation.
What to do
Separate doses by about 2 hours, giving moxifloxacin well before the bicarbonate when possible.
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 Moxifloxacin
- Amiodarone + Moxifloxacin Contraindicated
- Arsenic trioxide + Moxifloxacin Contraindicated
- Disopyramide + Moxifloxacin Contraindicated
- Dofetilide + Moxifloxacin Contraindicated
- Dronedarone + Moxifloxacin Contraindicated
- Droperidol + Moxifloxacin Contraindicated
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 Moxifloxacin with Sodium bicarbonate?
MediHelp rates the interaction as moderate. Moxifloxacin and Sodium bicarbonate 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. Antacid-type products may reduce the absorption of oral moxifloxacin. The effect on moxifloxacin is smaller than for some other fluoroquinolones, but it can still lower antibiotic exposure.
How serious is the interaction between Moxifloxacin and Sodium bicarbonate?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Separate doses by about 2 hours, giving moxifloxacin well before the bicarbonate when possible.
What other medicines interact with Moxifloxacin?
MediHelp also lists interactions of Moxifloxacin with, for example, Amiodarone, Arsenic trioxide, Disopyramide. The full list is on the Moxifloxacin page.
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