Flush them down the toilet. Also discard any medication if you can no longer read its label or if it is outdated. Never mix medications in the same container. If you cannot use child-resistant caps, be sure to keep all medicine containers away from children and pets. Some nonprescription medicines are dangerous when taken in large quantities.
Examples are aspirin and vitamin pills with iron.
If you need glasses to read, be sure to wear them when taking medicine. This way you can be sure you have the right medicine. For the same reason, turn on the light when you take medicine at night. For patients with severe vision or memory problems, a responsible person can place daily medications in a container made especially for this purpose. Check with a local drug store to purchase this container.