Pharmacy out of stock. What are the rules for partial fills and early refills?

Partial fills and early refills for stimulants are pharmacy and prescription questions, not a single national 3-day rule. Partial fills of controlled drugs may be possible so the remainder is completed later, depending on provincial pharmacy standards and the prescription wording. Early refills for travel usually need the prescriber and sometimes insurer approval. If the change is persistent, distressing, or affecting daily functioning, bring a brief timeline to the prescribing clinician rather than changing the dose independently. References: https://www.camh.ca/en/professionals/treating-conditions-and-disorders/adult-adhd/adult-adhd---treatment/adult-adhd---pharmacotherapy https://www.caddra.ca/medication-chart/ https://pdf.hres.ca/dpd_pm/00075816.PDF https://pdf.hres.ca/dpd_pm/00077178.PDF

My pharmacy was short on the long-acting tablets and I assumed there was a secret 3-day rule. There was not, at least not one they quoted me. They called around and I waited. I did not skip to stretch the bottle. I emailed the prescriber about travel later that month. Coverage on my plan was a separate mess. Only my shortage week, not a refill law.