Effects begin around 20-40 minutes after injection
Euphoria
Dizziness
Visual and auditory hallucinations
Synesthesia ("seeing sounds" and "hearing colors")
Paranoia
Acute panic reactions / agitation
Effects taper off after about 6-8 hours, depending on dose
Lysergic acid diethylamide toxicity
Serotonin-Like Agents
Carbamate toxicity
Lysergic acid diethylamide 
Tianeptine toxicity
Psilocybin 
Phencyclidine toxicity
N,N-Dimethyltryptamine 