Without side effects shown in most studies, please do not stop taking your antipsychotic, studies are all in adjunction with antipsychotic, the supplement below are at dosage or contain elements not commonly found in our diet
For positive symptoms
L theanine 400 mg and below , The effects of L-theanine supplementation on the outcomes of patients with mental disorders: a systematic review - PMC
For negative symptom
Sarcosine 2 grams and below, adjust to 1 gram or lower if irritability occur, https://www.mdpi.com/1422-0067/16/10/24475
Side effects from multiple sources
With mild side effects
Ginkgo biloba 240 mg or lower , https://onlinelibrary.wiley.com/doi/10.1155/2013/915691
ashwagandha 500mg or lower, some studies say there are traces of liver damage at low dosage, https://www.psychiatrist.com/jcp/withania-somnifera-extract-for-schizophrenia-symptoms/
Medicine for weight loss from least effective to most
Wegovy/semaglutide: (single glp 1 mechanism) https://www.nejm.org/doi/full/10.1056/NEJMoa2032183
Mounjaro/zepbound/tirzepatide: (duo glp 1+ gip mechanism) https://www.nejm.org/doi/full/10.1056/NEJMoa2206038
Retatrutide:( triple glp 1+gip+ glucagon mechanism, still in phase 2) https://www.nejm.org/doi/full/10.1056/NEJMoa2301972
Side effects comparison tirzepatide vs semaglutide less for tirzepatide:
Side effects comparison tirzepatide vs retatrutide less for tirzepatide: SUN-659 Comparative Efficacy and Safety of Tirzepatide vs Retatrutide in Weight Loss: A Network Meta-Analysis of Clinical Trials - PMC
Side effects comparison oral glp 1 vs injectable less for injectable, more weight loss for injectable but less hba1c reduction: Real-World Comparison of Oral Versus Injectable Semaglutide for the Reduction of Hemoglobin A1C and Weight in Patients with Type 2 Diabetes - PMC
New antipsychotic
Cobenfy(duo mechanism, muscarinic receptor antagonist that cannot cross blood brain barrier, muscarinic receptor agonist that can) slight weight loss in study: Cobenfy (Xanomeline-Trospium Chloride): A New Frontier in Schizophrenia Management - PubMed
Others: feel free to with studies quoted
Again, please consult your doctor before taking any supplements, weight loss medication or new antipsychotic