The pharmacist may need time to telephone the physician, check the medication supply, order the medication, then package and label the medication. Most prescriptions, including refills, are only good for 12 months. At that time, a new prescription is necessary and any unused refills cannot be filled. Storing Your Medications 1. Temperature changes and humidity can cause medication to become ineffective or dangerous.
Humidity can cause a tablet to become moist and powdery.
Do not store medications in places with high humidity, like gym lockers, bathrooms and above the stove. Do not store medications in the glove compartment of your car, it is too hot. Traveling With Medications 1. When you travel, make sure you have more than adequate supply of medications. Put your medications in your carry-on luggage.