Final answer:
An Exceptional Access Program (EAP) form, also known as an Exception form, is required when a medication is not listed in the ODB formulary, allowing healthcare providers to request coverage for such drugs.
Step-by-step explanation:
When a drug product is not listed in the ODB formulary, the type of form that must be used is known as an Exceptional Access Program (EAP) form, which may also be referred to in some jurisdictions as an Exception form. This form is submitted by a healthcare provider to request coverage for a medication that is not typically covered under the plan. The EAP considers requests on a case-by-case basis and requires detailed information about the patient's medical history and the rationale for prescribing the particular drug.