Can I Drink Oat Milk with IBS?

Rebecca Taylor
Reviewed by Rebecca Taylor, Registered Nutritionist (RNutr)
Quick Answer

Oat milk is moderate FODMAP. Small portions (1/2 cup) are low FODMAP; larger amounts may trigger symptoms.

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Moderate FODMAPSafe: 1/2 cup (125ml)

What Our Protocols Say

Bloating-DominantSmall portions only

GOS increases with larger portions.

Tip: Stick to 1/2 cup or choose almond milk.

Constipation (IBS-C)Small amounts

May be better tolerated than dairy.

Tip: Test your tolerance; almond milk is safer.

Diarrhea (IBS-D)Limit

GOS can worsen loose stools.

Tip: Almond or coconut milk are better options.

Mixed (IBS-M)Small portions

Test carefully with minimal amounts.

Tip: 1/2 cup in coffee is usually fine.

Post-SIBO RecoveryVery limited

GOS can feed bacteria.

Tip: Almond milk is safer during recovery.

Stress-TriggeredSmall amounts

Stress reduces tolerance; keep portions small.

Tip: Switch to almond milk during high stress.

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Medical Disclaimer

This information is for educational purposes only and is not intended as medical advice. Always consult with a qualified healthcare provider before making changes to your diet.

Last updated: January 29, 2025 | Reviewed by Rebecca Taylor, RNutr