I trawled recoop's website for specific claims they make about ingredients and their possible effects. I searched "$ingredient adhd", "$ingredient amphetamine", "$ingredient stimulant" on pubmed and looked at the first two pages of results. I scanned all titles and summarized abstracts to gauge relevance.
Claim: Vitamin C helps accelerate excretion of stimulants, increasing recovery.
Literature: (note, i used "ascorbic acid" as an additional search term)