Drug interactions
Insulin glargine + Testosterone
Severity: Minor
Insulin glargine and Testosterone: 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 improve insulin sensitivity and lower blood glucose in some patients. In people on insulin glargine this may occasionally contribute to lower glucose readings and hypoglycemia, although the effect is usually modest.
What this interaction means in plain words
Insulin glargine and Testosterone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Insulin glargine belongs to Endocrine; Testosterone belongs to Endocrine.
Why it happens
Androgens may enhance peripheral insulin sensitivity, producing an additive glucose-lowering effect.
What to do
Monitor blood glucose when testosterone is started, stopped or changed in insulin-treated patients. Reduce the insulin dose if glucose readings fall consistently.
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 Insulin glargine
Other interactions of Testosterone
- Testosterone + Warfarin Major
- Androstenedione + Testosterone Moderate
- Betamethasone + Testosterone Moderate
- Carbamazepine + Testosterone Moderate
- Corticotropin + Testosterone Moderate
- Cortisone + Testosterone Moderate
Frequently asked questions
Can I take Insulin glargine with Testosterone?
MediHelp rates the interaction as minor. Insulin glargine and Testosterone 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 improve insulin sensitivity and lower blood glucose in some patients. In people on insulin glargine this may occasionally contribute to lower glucose readings and hypoglycemia, although the effect is usually modest.
How serious is the interaction between Insulin glargine and Testosterone?
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 when testosterone is started, stopped or changed in insulin-treated patients. Reduce the insulin dose if glucose readings fall consistently.
What other medicines interact with Insulin glargine?
MediHelp also lists interactions of Insulin glargine with, for example, Alogliptin-pioglitazone, Ethanol, Glimepiride-pioglitazone. The full list is on the Insulin glargine page.
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