
black seed
Herbs & Spices
Is black seed high in fructans?
Find out whether black seed is high or low in fructans, see its exact rating, and check its FODMAP, salicylate, oxalate and diet compatibility all in one place.
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Compare black seed across criteria
Sensitivity notes
Why fructans food checker matters
Fructans are chains of fructose molecules found in wheat, onions, garlic, and many other foods. They're a type of FODMAP that can cause digestive symptoms in sensitive individuals because they're not well absorbed in the small intestine.
- Garlic-infused oil is low-FODMAP since fructans don't dissolve in oil
- Green parts of leeks and scallions are lower in fructans
- Sourdough bread may be better tolerated than regular wheat bread
Triggers
Diets
Serving size, prep, and portion notes for black seed
Black seed is Nigella sativa, the small matte-black seed scattered over naan and Turkish bread and stirred into Bengali panch phoron. As a spice it grades clean across the board here, with no histamine, no tyramine, no free glutamate, no sulfites, no salicylate flag and no FODMAP load. The reason it needs a page at all is that most people meeting it now are not meeting a spice. They are taking black seed oil capsules or a spoon of cold-pressed oil standardised for thymoquinone, and that is a daily dose orders of magnitude larger than anything you would sprinkle on bread. Almost every reported side effect and drug interaction belongs to the supplement, not the seed.
Watch for
The culinary dose and the supplement dose are not the same exposure. A pinch of seed on flatbread is a fraction of a gram, while black seed oil regimens run one to three grams a day standardised for thymoquinone, the compound that makes up roughly half a percent to two percent of the oil. If you started a supplement, log it as a supplement. / At supplement doses the common complaints are gastric: bloating, nausea, loose stools and reflux. These read exactly like a new food intolerance in a diary, so a black seed oil start date is worth marking before you go hunting through your meals. / Thymoquinone interacts with cytochrome P450 enzymes including CYP2C9, the pathway that clears warfarin, and trials consistently show modest blood-sugar and blood-pressure lowering. Stacked with an anticoagulant, a diabetes drug or a blood-pressure medication, the effects add up. Clear a black seed oil habit with whoever manages your prescriptions. / Rash and skin hypersensitivity are the recurring non-gut reports, and contact dermatitis from black seed oil applied to skin is documented. Nigella sativa is unrelated to true cumin despite the shared name, so a cumin allergy tells you nothing about it. / As a whole spice it grades clean on histamine, gluten, lactose, nickel, sulfites, nightshades and all FODMAP subgroups, which makes it one of the easier ways to add flavour on a restricted diet.
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Fructans Guide
Everything you need to know about fructans sensitivity and smart food choices.
Fructans are chains of fructose molecules found in wheat, onions, garlic, and many other foods. They're a type of FODMAP that can cause digestive symptoms in sensitive individuals because they're not well absorbed in the small intestine.
Sensitivity varies widely. What triggers one person may be fine for another. Track your reactions to find your personal threshold.
These foods are generally well-tolerated for Fructans sensitivity:
View all safe optionsThese foods have moderate levels and may be tolerated in small amounts:
These foods are high in fructans and may trigger symptoms:
View full listIf you're sensitive to Fructans, consider these strategies:
- 1Garlic-infused oil is low-FODMAP since fructans don't dissolve in oil
- 2Green parts of leeks and scallions are lower in fructans
- 3Sourdough bread may be better tolerated than regular wheat bread
- 4Spelt and ancient grains still contain fructans despite marketing claims
- 5Portion size matters - small amounts may be tolerable
Pro tip: Keep a food diary to track your reactions. The Triggerbites app makes this easy with automatic pattern detection.
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Get the AppFAQ
Is black seed high in Fructans?
Fructans: low signal for most people.
Can I still eat black seed if I'm sensitive to Fructans?
Usually fine in normal portions.
What else should I check?
Check Histamine, Histamine Liberators, and FODMAPs next for a fuller picture.





