Prescription of controlled drugs must follow certain procedures. Diverting or giving away controlled substances is illegal. A physician may be banned from prescribing controlled drugs if caught breaching the rules.

Physicians must exercise care in dispensing controlled or harmful drugs. Sale of poisons is forbidden.

It is forbidden to write prescriptions using secret formulas that only some pharmacists know is unethical

Pharmacy fraud is committed by billing for medicine not delivered.

Billing fraud is billing for services not performed or billing for non-existent patients.

Equipment fraud is using equipment that is really not needed or using equipment of poorer quality.

It is unethical for a physician to get financial advantage from prescriptions to be filled by pharmacies he owns

 Kick-backs from pharmacies are unethical and are illegal.