Excerpt from Bufo alvarius:
The Psychedelic Toad of the Sonoran Desert
by Albert Most
The venom from Bufo Alvarius is extremely hallucinogen when vaporized by heat and taken into the lungs in the form of smoke. An adequate dose for a normal adult of average size is a piece of dried venom about the size of a paper match head. Shave it into thin slices with a razor blade and put the pieces in a clean one-toke pipe fitted with a brass screen. Designate this pipe strictly for smoking toad venom, as the accumulation of residue in the bowl and condensation of vapors within the stem can yield an unintentional high with other smoking materials.
Apply a suitable flame and smoke the contents of the bowl in one complete inhalation. Try to hold the smoke in your lungs as long as possible as the effectiveness will depend largely on the full dose being absorbed in one breath.
Within thirty seconds, there will be an onset of almost overwhelming psychedelic effects. You will be completely absorbed in a complex chemical event characterized by an overload of thoughts and perception, brief collapse of the EGO, and loss of the space-time continuum. Relax, breathe regularly, and flow with the experience. After two to three minutes, the initial intensity fades to a pleasant LSD-like sensation in which visual illusions, hallucinations, and perceptual distortions are common. You may sense a distortion in your perceived body image or notice the world shrinking or expanding. You may notice that colors seem brighter and more beautiful than usual. And, most likely, you will experience a euphoric mood interspersed with bursts of unmotivated laughter.
This ineffable episode is of extremely short duration. The hallucinogenic effects dissipate rapidly and the entire psychedelic cycle is completed within fifteen minutes. There is no hangover or harmful effect. On the contrary, a pleasant psychedelic afterglow appears quite regularly and may last several hours to several days after smoking the venom of B. alvarius, the Psychedelic Toad of the Sonoran Desert.