A prescription refill is considered early at any time prior to 70 percent of an existing prescription being used. So, if you have a 90-day prescription, you’d have to be at least 63 days into it before you will be eligible for a refill. Let your pharmacist know if you have extenuating circumstances (e.g. your medication was lost or stolen) as pharmacies can make allowances.
Before you leave on a trip outside of your province of residence, you should refill any prescriptions you may need while you’re away. If you need more than a 100-day supply of your prescription, or more than a 30-day supply of select high-cost special authorization drugs, you’ll need to use the Travel Supply of Prescription Drugs Request prior to visiting your pharmacy.