Drug interactions
Orlistat + Triheptanoin
Severity: Major
Orlistat and Triheptanoin: major 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
Orlistat inhibits intestinal lipases, which triheptanoin relies on to release heptanoate for absorption. Coadministration may reduce heptanoate availability and diminish the therapeutic effect of triheptanoin in fatty acid oxidation disorders.
What this interaction means in plain words
Orlistat and Triheptanoin can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Orlistat belongs to Miscellaneous; Triheptanoin belongs to Gastrointestinal Tract.
Why it happens
Inhibition of pancreatic and gastric lipases by orlistat reduces hydrolysis of triheptanoin to heptanoate.
What to do
Avoid concurrent use and choose an alternative weight management approach. If unavoidable, monitor metabolic control and clinical response closely.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Orlistat
- Cyclosporine + Orlistat Major
- Cyclosporin + Orlistat Major
- Amiodarone + Orlistat Moderate
- Beta carotene + Orlistat Moderate
- Carbamazepine + Orlistat Moderate
- Cholecalciferol + Orlistat Moderate
Frequently asked questions
Can I take Orlistat with Triheptanoin?
MediHelp rates the interaction as major. Orlistat and Triheptanoin can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Orlistat inhibits intestinal lipases, which triheptanoin relies on to release heptanoate for absorption. Coadministration may reduce heptanoate availability and diminish the therapeutic effect of triheptanoin in fatty acid oxidation disorders.
How serious is the interaction between Orlistat and Triheptanoin?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid concurrent use and choose an alternative weight management approach. If unavoidable, monitor metabolic control and clinical response closely.
What other medicines interact with Orlistat?
MediHelp also lists interactions of Orlistat with, for example, Cyclosporine, Cyclosporin, Amiodarone. The full list is on the Orlistat page.
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