Final answer:
In medicine, the total number of dosage units distributed to another registrant must not exceed a certain limit.
Step-by-step explanation:
In medicine, when distributing dosage units to another registrant, the total number of dosage units must not exceed a certain limit. This limit is determined based on factors like the 99th percentile of 1-hour daily maximum concentrations, averaged over 3 years, and the frequency of exceeding this limit.
For example, if a medication should not be exceeded more than once per year, the total number of dosage units distributed should be calculated accordingly to ensure compliance with this requirement.