The effects of tryptophan loading on Attention Deficit Hyperactivity Disorder in adults: A remote double blind randomised controlled trial.

Inattention After controlling for the covariates of ethnicity and age, analysis of omission errors showed no significant effect of Time ( F (1, 132) = 3.44, p = .066, ηp 2 = .025), TRP ( F (2, 132) = .2.02, p = .137, ηp 2 = .030) or Group ( F (2, 132) = 3.75, p = .055, ηp 2 = .028), although arguably the latter could be considered a trend towards significance with the Control group producing fewer errors than both ADHD groups ( p < 0.05) as demonstrated by contrast analysis.

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