ketchup
Condiments & Sauces
Is ketchup high in nitrites?
Find out whether ketchup is high or low in nitrites, see its exact rating, and check its FODMAP, salicylate, oxalate and diet compatibility all in one place.
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Sensitivity notes
Why nitrites food checker matters
Nitrites are preservatives commonly used in cured meats. Some people are sensitive to them, experiencing headaches, flushing, or other symptoms after consumption.
- Choose uncured or 'no nitrates/nitrites added' meat products
- Note that 'natural' nitrites from celery powder act the same way
- Fresh meat is nitrite-free
Triggers
Diets
Serving size, prep, and portion notes for ketchup
Ketchup is the textbook stacked trigger: no single ingredient in it is extreme, but it borders on a problem across an unusual number of them at once. It is made from concentrated tomatoes (nightshade plus histamine), cooked and aged (histamine and glutamate build up), sweetened with high-fructose syrup (excess fructose and FODMAPs) and often preserved with sulfites. Individually each is a moderate load; together, in the amount people actually use, they can push a sensitive person over the edge when a plain tomato would not. If you react to ketchup but tolerate fresh tomato, the processing is usually why.
Watch for
Concentrated tomato makes it a nightshade and moderately high in histamine, two triggers in one spoonful / Cooking and ageing raise free glutamate (a savoury, MSG-like load) and histamine beyond that of a fresh tomato / Sweetened with high-fructose corn syrup, so it carries excess fructose and a moderate FODMAP load / Often preserved with sulfites, a further additive trigger, and it is pro-inflammatory overall thanks to the sugar and processing
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Nitrites Guide
Everything you need to know about nitrites sensitivity and smart food choices.
Nitrites are preservatives commonly used in cured meats. Some people are sensitive to them, experiencing headaches, flushing, or other symptoms after consumption.
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 Nitrites sensitivity:
View all safe options
These foods have moderate levels and may be tolerated in small amounts:
These foods are high in nitrites and may trigger symptoms:
View full list
If you're sensitive to Nitrites, consider these strategies:
- 1Choose uncured or 'no nitrates/nitrites added' meat products
- 2Note that 'natural' nitrites from celery powder act the same way
- 3Fresh meat is nitrite-free
- 4Bacon, hot dogs, and deli meats are common sources
- 5Vegetables like celery and beets contain natural nitrates
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 ketchup high in Nitrites?
Nitrites: low signal for most people.
Can I still eat ketchup if I'm sensitive to Nitrites?
Usually fine in normal portions.
What else should I check?
Check Paleo AIP, Inflammation, and Histamine next for a fuller picture.