Research

Hormonal

GLP-1 receptor agonists may interact with oral systemic cancer therapies by delaying gastric emptying, potentially altering absorption kinetics (time to peak concentration) without necessarily changing total drug exposure.

If you take oral cancer pills along with GLP-1 drugs (like Ozempic), tell your doctor. The GLP-1 drug might slow down how fast your cancer pills are absorbed. This doesn't always mean the treatment won't work, but your doctor needs to know to monitor you closely.

ModerateQualifiesLOW confidence
This study described a delayed time to peak concentration and modest reductions in peak drug levels while using GLP-1 RAs with certain oral medications, yet the total drug exposure remained typically unchanged.
Trenton Reinicke et al. · The Oncologist · 2026

Why this rating

Based on a systematic review of non-cancer oral medications; direct evidence for oral cancer drugs is lacking.

Source

The emerging implications of GLP-1 receptor agonists in radiation therapy

Trenton Reinicke et al. · The Oncologist · 2026

DOI 10.1093/oncolo/oyag073

narrative_review
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

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