Long-term treatment of chronic schizophrenics with clopenthixol decanoate.

A study was carried out in 68 chronic schizophrenic out-patients to assess the therapeutic effectiveness and tolerance of long-term maintenance treatment with a depot preparation of clopenthixol decanoate. Patients received 200 mg to 600 mg doses by intramuscular injection every 2 to 3 weeks for a mean treatment period of 20.3 months.