NutriStack
L-Carnitine and Phosphatidylcholine, a caution.
Both can contribute to TMAO production via gut bacterial metabolism; clinical relevance is debated.
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
- L-Carnitine and Phosphatidylcholine
- Pair type
- Caution
- Evidence (highest tier)
- Moderate
- Source citations
- 1 source
- Stack Score effect
- −5 to your Stack Score (per scored caution row).
- Scope
- Supplement × Supplement
- Last verified
- May 30, 2026
Caution · Moderate evidence
Caution
What is happening. Both can contribute to TMAO production via gut bacterial metabolism; clinical relevance is debated.
Mechanism. Both are gut-bacteria-converted to TMA and then to TMAO in the liver. Cardiovascular implications of elevated TMAO remain debated.
Recommendation. Monitor TMAO if cardiovascular risk is a concern. Routine use is generally well tolerated.
Sources (1)
- Koeth RA et al. Intestinal microbiota metabolism of L-carnitine, a nutrient in red meat, promotes atherosclerosis. Nat Med. 2013
Stack Score
How this pair moves the number.
Effect on the composite score
If both L-Carnitine and Phosphatidylcholine are in the same stack, this pair applies −5 to your Stack Score (per scored caution row).
The full algorithm, the clamping rules, and four worked stacks are documented at /methodology/stack-score.
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