When all else fails

Clinical Experience With Intramuscular Clozapine

Clozapine is the most effective antipsychotic for patients with treatment-refractory schizophrenia, but many refuse to accept oral clozapine therapy. Intramuscular (IM) clozapine represents a convenient alternative for their treatment. The aim of this review is to summarize studies investigating IM clozapine administration. When initially developed, clozapine was also provided as an IM formulation, but the manufacturer later discontinued its production. Recently, IM clozapine became again available as an unlicensed product distributed by the Dutch company Apotheek A15. The use of IM clozapine has been reported in older studies on clozapine's adverse effects. It has also been described in detail in 5 more recent and generally smaller (n = 7 - 59) retrospective studies in patients refusing to take oral clozapine. In addition, its administration has been noted in 5 case reports. IM clozapine has been used at approximately ½ of the dose of oral clozapine due to pharmacokinetic considerations. It has been used in doses of up to 500 mg per day and for up to 99 days of treatment. The majority of patients (between 60 and 100%) were successfully transitioned to oral clozapine within a few days of IM treatment, and improvement in their condition was sustained during the long-term follow-up. Side effects of IM clozapine were similar to those of oral clozapine, but its sedative and cardiovascular effects (hypotension and tachycardia) had faster onset following IM administration. After long-term use, clozapine injections lead to local swelling and to the formation of painful nodules in some patients. In summary, IM clozapine may facilitate successful transition to oral clozapine in most patients, and it definitely represents a valuable tool for addressing refusal of oral clozapine in patients with treatment-refractory schizophrenia. More studies, especially focused on its safety, are, however, needed to better understand the limitations of this novel treatment approach.

The assertive approach to clozapine: nasogastric administration

Aims and methodAn 'assertive approach' to clozapine, where nasogastric administration is approved, is assessed through a case-load analysis to provide the first systematic description of its use and outcomes worldwide. RESULTS: Five of the most extremely ill patients with treatment-resistant schizophrenia were established and/or maintained on clozapine, resulting in improvements to their mental state; incidents were reduced, segregation was terminated and progression to less restrictive environments was achieved.Clinical implicationsDespite being underutilised and rarely enforced, in extreme circumstances, an assertive approach to clozapine can be justified. Nasogastric clozapine can be safely delivered and the approach itself, rather than actual nasogastric administration, may be enough to help establish and maintain patients with treatment-resistant schizophrenia on the most effective treatment.Declaration of interestE.S. has received speaker fees from Jansen Pharmaceuticals and Novartis.

Use of atypical antipsychotics by consultant psychiatrists working in forensic settings

AIMS AND METHOD

Atypical antipsychotics have less neurological side-effects than the older drugs but are only available as oral preparations. This may limit their use in forensic patients. We sent a postal questionnaire to all consultant psychiatrists working in forensic settings in the UK to determine their views.

RESULTS

The response rate was 60%. Respondents tended to overestimate the benefits and underestimate the side-effects of the atypical antipsychotics. The majority often prescribed atypical antipsychotics and depots together. Psychoeducation and serum level monitoring were used to optimise/monitor compliance by 50%.

CLINICAL IMPLICATIONS

Using atypical antipsychotics as monotherapy is problematic in forensic settings. The extent of polypharmacy means that patients may experience the side-effects of both typical and atypical antipsychotics. More could be done to facilitate and monitor compliance.