Drug interactions
Testosterone buccal system + Tolbutamide
Severity: Minor
Testosterone buccal system and Tolbutamide: 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
Androgens can enhance insulin sensitivity and lower blood glucose, which may add to the effect of tolbutamide. Hypoglycemia is possible, particularly when testosterone therapy is started.
What this interaction means in plain words
Testosterone buccal system and Tolbutamide 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 glucose-lowering through improved insulin sensitivity from androgen therapy.
What to do
Monitor blood glucose after starting or changing testosterone and reduce the tolbutamide dose if needed.
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 Tolbutamide
- Glyburide-metformin + Tolbutamide Major
- Insulin degludec-liraglutide + Tolbutamide Major
- Aceclofenac + Tolbutamide Moderate
- Acemetacin + Tolbutamide Moderate
- Acetylsalicylic acid + Tolbutamide Moderate
- Albiglutide + Tolbutamide Moderate
Frequently asked questions
Can I take Testosterone buccal system with Tolbutamide?
MediHelp rates the interaction as minor. Testosterone buccal system and Tolbutamide have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Androgens can enhance insulin sensitivity and lower blood glucose, which may add to the effect of tolbutamide. Hypoglycemia is possible, particularly when testosterone therapy is started.
How serious is the interaction between Testosterone buccal system and Tolbutamide?
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 glucose after starting or changing testosterone and reduce the tolbutamide dose if needed.
What other medicines interact with Tolbutamide?
MediHelp also lists interactions of Tolbutamide with, for example, Glyburide-metformin, Insulin degludec-liraglutide, Aceclofenac. The full list is on the Tolbutamide page.
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