Once you turn 65, your prescription costs are partly covered by the Ontario Drug Benefit (ODB) program. There are two income categories. If you are in the lower category, you may pay up to $2 for each prescription filled. If you are in the higher category, you pay the first $100 of your prescription drug costs per year. After that, you may pay up to $6.11 for each prescription filled.These fees are called copayments. Some pharmacies do not charge the $2 copayment for people in the lower income category, and some charge less than $6.11 for people in the higher income category. In addition, many pharmacies offer senior discounts of at least 10% on non-prescription merchandise. Pharmacies listed here offer either reduced copayments for prescriptions, or senior discounts higher than 10% for non-prescription items.