"Data from Isbell et a]. (1967) and Perez-Reyes et al. (1971) have indicated that the hallucinogenic oral dose is in the range of 0.4 to 0.5 mg./kg Delta 9 THC. Thus, the hallucinogenic dose is 80 times larger than the delivered dose of smoked marihuana producing minimal subjective effects (five micrograms/kg.) or about 11 to 14 times larger than the usual smoked dose."

Any experienced weed user knows you can get hallucinogenic effects from a large oral or possibly smoked dose. For some it is difficult to smoke enough to produce significant hallucinogenic effects, so an oral dose is the best way.

Too many unexperienced people associate hallucinogens with seeing animate unreal visual hallucinations. In reality most common hallucinogens start with internal effects, and you don't get any intense visuals until you take a relatively high dose. Like mushrooms, you typically won't get strong visuals unless you eat more than 7-10 gs, yet many people can still have an enjoyable moderate trip with 1.5-2 gs.