Drug interactions
Atenolol-chlorthalidone + Insulin lispro
Severity: Moderate
Atenolol-chlorthalidone and Insulin lispro: moderate 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
Chlorthalidone can raise blood glucose and reduce the effect of insulin, so insulin requirements may increase. In addition, atenolol can blunt the warning symptoms of hypoglycemia such as tremor and palpitations, and may prolong recovery from it.
What this interaction means in plain words
Atenolol-chlorthalidone and Insulin lispro can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Atenolol-chlorthalidone belongs to Cardiovascular; Insulin lispro belongs to Endocrine.
Why it happens
Thiazide-induced impaired glucose tolerance opposes insulin action, while beta-blockade masks adrenergic hypoglycemia symptoms and impairs glycogenolysis.
What to do
Monitor blood glucose more frequently after starting or changing the combination and adjust the insulin dose as needed. Educate the patient that sweating may be the main sign of hypoglycemia.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Atenolol-chlorthalidone
Other interactions of Insulin lispro
Frequently asked questions
Can I take Atenolol-chlorthalidone with Insulin lispro?
MediHelp rates the interaction as moderate. Atenolol-chlorthalidone and Insulin lispro can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Chlorthalidone can raise blood glucose and reduce the effect of insulin, so insulin requirements may increase. In addition, atenolol can blunt the warning symptoms of hypoglycemia such as tremor and palpitations, and may prolong recovery from it.
How serious is the interaction between Atenolol-chlorthalidone and Insulin lispro?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood glucose more frequently after starting or changing the combination and adjust the insulin dose as needed. Educate the patient that sweating may be the main sign of hypoglycemia.
What other medicines interact with Atenolol-chlorthalidone?
MediHelp also lists interactions of Atenolol-chlorthalidone with, for example, Acebutolol, Aldesleukin, Amiodarone. The full list is on the Atenolol-chlorthalidone page.
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