Andrew Huberman· PhD
L-citrulline can trigger terrible canker sores and oral lip cold sores in sensitive individuals.
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We can't find evidence that holds up here. Proponents are reasoning from mechanism or analogy rather than direct human data, and the most credible skeptics raise objections we can't dismiss.
L-citrulline can trigger terrible canker sores and oral lip cold sores in sensitive individuals.
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L-citrulline can give people vicious cold sores and canker sores. Vicious.