Drug interactions
Labetalol + Methyclothiazide
Severity: Minor
Labetalol and Methyclothiazide: 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
Thiazide diuretics and labetalol are often combined for hypertension, giving additive blood pressure lowering. Thiazides may cause hypokalemia, hyperglycemia and hyperuricemia, and beta-blockers can mask hypoglycemia symptoms. The combination is generally manageable.
What this interaction means in plain words
Labetalol and Methyclothiazide have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Additive antihypertensive effect through diuresis and vasodilation with beta blockade.
What to do
Monitor blood pressure, serum potassium and glucose, particularly at the start and after dose changes. Adjust doses if hypotension or electrolyte disturbance develops.
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
Frequently asked questions
Can I take Labetalol with Methyclothiazide?
MediHelp rates the interaction as minor. Labetalol and Methyclothiazide have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Thiazide diuretics and labetalol are often combined for hypertension, giving additive blood pressure lowering. Thiazides may cause hypokalemia, hyperglycemia and hyperuricemia, and beta-blockers can mask hypoglycemia symptoms. The combination is generally manageable.
How serious is the interaction between Labetalol and Methyclothiazide?
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 blood pressure, serum potassium and glucose, particularly at the start and after dose changes. Adjust doses if hypotension or electrolyte disturbance develops.
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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