Figure 1.

Whole blood concentrations of THC, 11-OH-THC (actives metabolites) and THC-COOH (inactive metabolite) after oral intake of 20 mg dronabinol and of a hemp milk decoction containing traces of cannabinoids (placebo).

Favrat et al. BMC Psychiatry 2005 5:17   doi:10.1186/1471-244X-5-17
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