Unapproved or investigational drugs can be legally prescribed to patients under specific regulatory frameworks, such as expanded access or compassionate use programs. Multiple studies confirm that these mechanisms provide legal pathways for treating individuals with serious conditions when approved options are unavailable.
The claim states that drugs not approved by the FDA (or equivalent agencies) are allowed to be prescribed under certain conditions. Retrieved papers discuss expanded access, compassionate use, and alternative regulatory frameworks (such as in Papers 1, 5, and 6) that specifically provide legal mechanisms for prescribing unapproved drugs under defined conditions. Therefore, the claim is fully supported by the literature.