In some cases it might be possible to very slightly extend the time interval between doses of medication.
For example if a tablet must be taken every 24 hours, I doubt that much harm would come of taking it every 25 or even 26 hours.
No good for something that must be taken at a certain time of day, but for some medicines this would give an extra dose or two every month.
After a year of so doing, about an extra months worth could be obtained.

If one was so unfortunate as to be a victim of street robbery, burglars, a house fire, or a bad auto crash, it might be tempting to claim that ones medication was lost or stolen in the incident.
To keep making such claims would be very suspicous, but just once might be tempting.