Brian, Late to the thread and may have been covered already. For your meds, get generic bulk and pack (vacuum if you like) in a single ziplock. Saves alot of the bulk of the individual packed meds. A typical tylenol bottle contains plenty of air during storage and use so air exposure should not be a problem for that type of med within the expiration date.

Bill

Should have mentioned, zip lock for each type, don't mix. Small ones are available at craft stores.