Suggesting that people take prescription drugs which are not prescribed to them may be dangerous both to the individual as well as The Shroomery.
Anti-psychotic drugs in particular are poor choices in this case. Anti-psychotic drugs are dopamine antagonists, which means they modulate and reduce the activity of the dopamine neurotransmitter in the brain. Psychedelic drugs (specifically tryptamines), on the other hand, are [generally speaking] 5-HT, 5-HT1&2,5-HT2A&B receptor agonists, which means they excite activity in these neurons. Since anti-psychotic drugs do nothing to counteract the activity of psychedelic drugs, their use in effects-management is not appropriate. Rather than subdue the activity of the psychedelic, anti-psychotics subdue the individual's ability to respond to the activity of the psychedelic. This sort of situation can be uniquely terrifying, and can carry a heavy long-term psychological impact.
Risperdone in particular can carry some hefty side-effects, which can compound upon each other regardless the time interval between dose. Tardive dyskinesia (involuntary, repetitive movement of facial muscles) is one such example. While not normally presenting except after large doses of dopamine antagonists, some individuals undergo this effect right away. The scary part: it can become a permanent condition. Most anti-psychotics carry this dystonic risk, while other anti-psychotics such as olanzipine can cause severe pancreatic problems in patients with full-blown or developing diabetes. The careless of use of benzodiazepenes is also a dangerous suggestion: these drugs have been known to increase suicidal tendecies and amplify mood changes in patients with mood disorders.
Since The Shroomery cannot know who is taking their advice, the advice offered should be as universal as possible. Since prescription drugs are prescribed precisely because they are not for everybody, suggesting their use is dangerous and irresponsible in a public forum.