Hello! Have you heard of Dr. Abram Hoffer? He has many books on Orthomolecular Nutrition, he specifically talks about Niacin for Schizofrenia.
https://www.amazon.com.mx/Orthomolecular-Treatment-Schizophrenia-Abram-Hoffer/dp/0879839104
Here's the book of Niacin:
Just noting that Betaine is also sometimes called trimethylglycine, or TMG, if that helps you when searching for it. (It’s also NOT the same as “Betaine HCL” which is digestive hydrochloric acid.)
Others have spoken about Betaine/TMG already. Since you asked for suggestions for other nutritional supports as well, I’ll paste my response that I left on another thread on schizophrenia:
Niacin, niacin, niacin. Here is one of Dr. Abram Hoffer’s papers on the use of high-dose niacin in schizophrenia. (https://journals.sagepub.com/doi/pdf/10.1177/070674377101600605) His book on niacin and schizophrenia is here. (https://www.amazon.com/dp/0879839104/)
Modern studies have shown again and again that schizophrenic people have a markedly different physical response to niacin compared to non-schizophrenic people with other major mental illness, such as bipolar. (https://www.consultant360.com/story/abnormal-niacin-response-may-be-marker-schizophrenia) . Schizophrenics do not easily experience the “niacin flush” — a temporary, 15-minute tingly all-over skin feeling with skin reddening — that most other people do. They achieve the “flush” only at a much higher dose. When they finally reach that dose, Hoffer’s research showed that it markedly helped reduce schizophrenia symptoms.
It must be true, flush-causing, vitamin B3 niacin (sometimes called nicotinic acid), NOT so-called “no-flush niacin” or “niacinimide.”
Here is an example of the correct, flushing version available in Germany.
(https://www.amazon.de/dp/B000JG9FII/ref=cm_sw_em_r_mt_imm_awdb_E2PMBWQM8YK5W8JE26RF)
You may or may not be able to order it as easily, but this American example is my ideal recommended form, because it can be measured out in larger quantities. To achieve the 1 to 3 grams per day that some patients find most helpful in alleviating their symptoms, it requires taking multiple capsules per day, which some people find tiresome. Powder forms can make consuming gram measurements easier. (https://www.amazon.com/dp/B010RBSLRU/)
Here is some collected research on niacin & schizophrenia, compiled in the unusual form of a patent application, which has since been abandoned — likely because it would be difficult, if not impossible, to patent something as basic as a major B vitamin — fair enough, but the research is there nevertheless. (https://patents.google.com/patent/CA2505808A1/en)
Niacin, niacin, niacin. Here is one of Dr. Abram Hoffer’s papers on the use of high-dose niacin in schizophrenia. (https://journals.sagepub.com/doi/pdf/10.1177/070674377101600605) His book on niacin and schizophrenia is here. (https://www.amazon.com/dp/0879839104/)
Modern studies have shown again and again that schizophrenic people have a markedly different physical response to niacin compared to non-schizophrenic people with other major mental illness, such as bipolar. (https://www.consultant360.com/story/abnormal-niacin-response-may-be-marker-schizophrenia) . Schizophrenics do not easily experience the “niacin flush” — a temporary, 15-minute tingly all-over skin feeling with skin reddening — that most other people do. They achieve the “flush” only at a much higher dose. When they finally reach that dose, Hoffer’s research showed that it markedly helped reduce schizophrenia symptoms.
It must be true, flush-causing, vitamin B3 niacin (sometimes called nicotinic acid), NOT so-called “no-flush niacin” or “niacinimide.”
Here is an example of the correct, flushing version available in Germany.
(https://www.amazon.de/dp/B000JG9FII/ref=cm_sw_em_r_mt_imm_awdb_E2PMBWQM8YK5W8JE26RF)
You may or may not be able to order it as easily, but this American example is my ideal recommended form, because it can be measured out in larger quantities. To achieve the 1 to 3 grams per day that some patients find most helpful in alleviating their symptoms, it requires taking multiple capsules per day, which some people find tiresome. Powder forms can make consuming gram measurements easier. (https://www.amazon.com/dp/B010RBSLRU/)
Here is some collected research on niacin & schizophrenia, compiled in the unusual form of a patent application, which has since been abandoned — likely because it would be difficult, if not impossible, to patent something as basic as a major B vitamin — fair enough, but the research is there nevertheless. (https://patents.google.com/patent/CA2505808A1/en)