← Back to FODMAP Index
Cod Liver Oil
Gadus morhua hepatis oleum
Low FODMAP
Rich in Omega-3
Vitamin A & D
Bottle of cod liver oil supplement

FODMAP/SIBO Rating

Safe

Serving Size Consideration: 1 teaspoon (5ml)

Safe Serving Size: 2 teaspoons (10ml)

Active Compounds: Omega-3 fatty acids (EPA and DHA), Vitamin A, Vitamin D

Fermentation Level:
Very Low

Digestive Impact

Why it's problematic: Rarely

Specific symptoms: May cause fishy burps or mild nausea if taken on empty stomach

Typical reaction time frame: Usually within 30 minutes if any reaction occurs

Individual variation: Tolerance is generally high across individuals

Safe Alternatives

fish oil

Fish oil

olive oil

Olive oil

avocado oil

Avocado oil

Substitution ratio: 1:1

Processing Effects

Heat sensitive - store in cool, dark place

Can oxidize if exposed to air - keep tightly sealed

Stacking Considerations

Avoid combining with:

  • grapefruit

Safe complementary foods: Can be taken with any low FODMAP foods. Best absorbed with a meal containing some fat.

Reintroduction Guidelines
  1. Start with 1/4 teaspoon daily
  2. If well tolerated, increase to 1/2 teaspoon after 3 days
  3. Gradually increase to full dose of 1 teaspoon if no issues arise

Signs of success: No digestive discomfort, no fishy burps, good absorption of nutrients

Hidden Sources

Common products containing garlic:

  • fish oil supplements
  • omega-3 supplements
  • vitamin A&D supplements

Alternative names: CLO, fish liver oil, cod oil

Individual Variables

Factors affecting tolerance:

  • Time of day taken
  • Whether taken with food
  • Quality and freshness of the oil
  • Individual fat absorption capacity

Tip: Take with food in the morning to minimize potential for digestive discomfort