Your probiotic choice affects your baby via breast milk. Histamine-producing strains can disrupt infant sleep.
Histamine from maternal diet and supplements transfers into breast milk and binds to H1 receptors in the infant brain, promoting wakefulness. If your probiotic produces histamine, it may be affecting your baby's sleep.
L. reuteri (BioGaia) is the most commonly recommended infant probiotic, but it produces 8,510 ng/mL of histamine. Here is what the evidence says about every strain.
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 |
|---|---|---|
| Lacticaseibacillus rhamnosus | Safe | No significant histamine production detected |
| Lactiplantibacillus plantarum | Safe | No significant histamine production detected |
| Lactobacillus acidophilus | Safe | No significant histamine production detected |
| Bacillus coagulans | Safe | No significant histamine production detected |
| Lacticaseibacillus paracasei | Safe | No significant histamine production detected |
| Streptococcus thermophilus | Variable | Strain-dependent. Check specific product strain. |
| Lactobacillus delbrueckii subsp. bulgaricus | 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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