Drug interactions
Labetalol + Sodium bicarbonate
Severity: Minor
Labetalol 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
Oral antacids such as sodium bicarbonate may reduce the absorption of oral labetalol, lowering its effect. The clinical impact is generally modest and avoidable by timing.
What this interaction means in plain words
Labetalol 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.
Labetalol belongs to Cardiovascular; Sodium bicarbonate belongs to Gastrointestinal Tract.
Why it happens
Raised gastric pH and possible binding reduce oral absorption of labetalol.
What to do
Give oral labetalol at least 2 hours apart from sodium bicarbonate. Monitor blood pressure if the two cannot be separated.
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 Labetalol
- Amifostine + Labetalol Major
- Amiodarone + Labetalol Major
- Atenolol-chlorthalidone + Labetalol Major
- Atenolol + Labetalol Major
- Betaxolol + Labetalol Major
- Bisoprolol + Labetalol 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 Labetalol with Sodium bicarbonate?
MediHelp rates the interaction as minor. Labetalol 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. Oral antacids such as sodium bicarbonate may reduce the absorption of oral labetalol, lowering its effect. The clinical impact is generally modest and avoidable by timing.
How serious is the interaction between Labetalol 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: Give oral labetalol at least 2 hours apart from sodium bicarbonate. Monitor blood pressure if the two cannot be separated.
What other medicines interact with Labetalol?
MediHelp also lists interactions of Labetalol with, for example, Amifostine, Amiodarone, Atenolol-chlorthalidone. The full list is on the Labetalol page.
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