Onset within 2m, effects last ~20-60m
Notorious for producing intense,  intricate psychedelic experiences
Dissociation, sensory enhancement/distortions, visual hallucinations
Paranoia, fear/anxiety
Adrenergic stimulation: mydriasis, mild tachycardia, mild hypertension, hyperthermia
Nausea/vomiting
Seizure (rare)
Dissociation, sensory enhancement/distortions, visual hallucinations
Paranoia, fear/anxiety
N,N-Dimethyltryptamine
Hypocalcemia/Hypercalcemia
Ethacrynic acid
Anticholinergic Toxicity
Strychnine
Tricyclic 
Hyoscyamine
Ertapenem Toxicity