“…In cancer patients, administration of oral Δ 9 -THC has been shown to significantly suppress the experience of nausea and vomiting, in comparison to placebo controls (Chang et al, 1979; Frytak et al, 1979; Orr et al, 1980; Sallan et al, 1975; Sweet et al, 1981) and when compared to the D 2 receptor antagonists available at the time, Δ 9 -THC was at least as effective (Carey et al, 1983; Crawford and Buckman, 1986; Cunningham et al, 1988; Frytak et al, 1979; Tramèr et al, 2001; Ungerleider et al, 1984) if not more effective (Ekert et al, 1979; Orr and McKernan, 1981) at reducing nausea and vomiting. Clinical evidence suggests that Δ 8 -THC suppresses anticipatory nausea in child patients (Abrahamov et al, 1995).…”