What do systematic reviews say?

Aspirin plus antipsychotics vs placebo/no adjunctive treatment + antipsychotics

It is very uncertain whether aspirin plus antipsychotics changes service use: change in hospital status – any change compared with placebo plus antipsychotics (very low certainty).

• Acetylsalicylic acid (aspirin) for schizophrenia 2019 · Cochrane Headline outcomes only
  RR 0.56 [0.05, 5.9]
  1 study · 70 participants
  Very low