NutriStack
Probiotics and Psyllium Husk, a synergy.
Psyllium is a partially fermentable fiber that can feed beneficial bacteria, acting as a synbiotic that supports probiotic colonization and short-chain fatty acid production.
One pair, every claim cited. The two substances, the type, the mechanism, the recommendation, and the primary literature.
Same shape as the other 1,729 pairs in the public database.
From the interaction database
What the row says.
Every entry follows the same shape: what is happening, the mechanism, the recommendation, and the primary literature.
At a glance
- Substances
- Probiotics and Psyllium Husk
- Pair type
- Synergy
- Evidence (highest tier)
- Moderate
- Source citations
- 2 sources
- Stack Score effect
- +2 to your Stack Score (per scored synergy row).
- Scope
- Supplement × Supplement
- Last verified
- May 30, 2026
Synergy · Moderate evidence
Synergy
What is happening. Psyllium is a partially fermentable fiber that can feed beneficial bacteria, acting as a synbiotic that supports probiotic colonization and short-chain fatty acid production.
Mechanism. Psyllium is partially fermented by colonic bacteria into short-chain fatty acids that lower luminal pH and nourish beneficial strains, providing a prebiotic substrate that helps probiotic organisms establish and persist.
Recommendation. Reasonable to combine for gut health. Take psyllium with plenty of water. No timing separation from the probiotic is needed.
Sources (2)
- Gibson GR, Hutkins R, Sanders ME, et al. Expert consensus document: the International Scientific Association for Probiotics and Prebiotics consensus statement on the definition and scope of prebiotics. Nature Reviews Gastroenterology and Hepatology. 2017
- McRorie JW, McKeown NM. Understanding the physics of functional fibers in the gastrointestinal tract. Journal of the Academy of Nutrition and Dietetics. 2017
Stack Score
How this pair moves the number.
Effect on the composite score
If both Probiotics and Psyllium Husk are in the same stack, this pair applies +2 to your Stack Score (per scored synergy row).
The full algorithm, the clamping rules, and four worked stacks are documented at /methodology/stack-score.
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