Drug interactions
Torsemide + Vitamin b1
Severity: Minor
Torsemide and Vitamin b1: 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
Loop diuretics increase urinary excretion of water-soluble vitamins including thiamine. In patients on long-term diuretic therapy, especially those with heart failure or poor nutrition, this can contribute to thiamine deficiency and may worsen cardiac function.
What this interaction means in plain words
Torsemide and Vitamin b1 have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Torsemide belongs to Cardiovascular; Vitamin b1 belongs to Gastrointestinal Tract.
Why it happens
Increased renal loss of thiamine due to diuresis-induced urinary excretion.
What to do
Consider assessing thiamine status and supplementing in patients on chronic loop diuretic therapy who have poor intake, heart failure, or alcohol use disorder.
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 Vitamin b1
- Ethanol + Vitamin b1 Major
- Bumetanide + Vitamin b1 Minor
- Ethacrynic acid + Vitamin b1 Minor
- Furosemide + Vitamin b1 Minor
- Omadacycline + Vitamin b1 Minor
- Patiromer + Vitamin b1 Minor
Other interactions of Torsemide
Frequently asked questions
Can I take Torsemide with Vitamin b1?
MediHelp rates the interaction as minor. Torsemide and Vitamin b1 have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Loop diuretics increase urinary excretion of water-soluble vitamins including thiamine. In patients on long-term diuretic therapy, especially those with heart failure or poor nutrition, this can contribute to thiamine deficiency and may worsen cardiac function.
How serious is the interaction between Torsemide and Vitamin b1?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Consider assessing thiamine status and supplementing in patients on chronic loop diuretic therapy who have poor intake, heart failure, or alcohol use disorder.
What other medicines interact with Vitamin b1?
MediHelp also lists interactions of Vitamin b1 with, for example, Ethanol, Bumetanide, Ethacrynic acid. The full list is on the Vitamin b1 page.
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