Answer
Previous oral treatment establishes response and reduces the chance of discovering an unexpected sensitivity after a long-acting injection.
Sources for this answer
- HALDOL Decanoate 50 mg/ml solution for injection and HALDOL Decanoate 100 mg/ml solution for injection — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.