Not all probiotics are safe if you have histamine intolerance. Some strains produce histamine. We checked every one.
If you have histamine intolerance, choosing the wrong probiotic can make your symptoms worse. Lactobacillus reuteri, one of the most commonly recommended strains, produces 8,510 ng/mL of histamine in laboratory conditions.
We cross-referenced every probiotic strain in our database against measured histamine production data from peer-reviewed studies. Here is what we found.
Based on measured histamine production data from peer-reviewed studies, cross-referenced against the Clarity database of 1,595 validated ingredients and 172 bacterial strains.
| Strain | Rating | Notes |
|---|---|---|
| Lactobacillus acidophilus | Safe | No significant histamine production detected |
| Lacticaseibacillus rhamnosus | Safe | No significant histamine production detected |
| Lacticaseibacillus paracasei | Safe | No significant histamine production detected |
| Lactiplantibacillus plantarum | Safe | No significant histamine production detected |
| Bacillus coagulans | Safe | No significant histamine production detected |
| Bacillus subtilis | Safe | No significant histamine production detected |
| Pediococcus acidilactici | Safe | No significant histamine production detected |
| Lactobacillus delbrueckii subsp. bulgaricus | Variable | Strain-dependent. Check specific product strain. |
| Streptococcus thermophilus | Variable | Strain-dependent. Check specific product strain. |
| Enterococcus faecium | Variable | Strain-dependent. Check specific product strain. |
| Limosilactobacillus reuteri | Avoid | Produces 8,510 ng/mL histamine |
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Important: "Safe" means no significant histamine production detected for this strain. Individual responses vary. This is not medical advice. Discuss probiotic choices with your healthcare provider.
Each product below has a full ingredient safety report with strain-level analysis.
View full ingredient safety report
View full ingredient safety report
View full ingredient safety report
View full ingredient safety report
View full ingredient safety report
View full ingredient safety report
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