Another crazy auction from Dr. Bargain!You are bidding on one lot of fourty (40) FLEXERIL hot/cold gel packs. Each pack measures 8 x 4.5 inches. The front of the hot/cold pack reads "FLEXERIL, cyclobenzaprine HCI, 5 mg tablets". The back of the pack reads: Application: Cold: store in the freezer so that the pack is ready to use in case of injury. Approximately 1 hour is required to freeze gel. Ideal to use for: reducing swelling, toothache, temporary relief of headache, reducing fevers. CAUTION: whether used hot or cold it is advisable to check that the temperature is not too extreme against the skin. It is recommended that the gel pack is wrapped in cloth before applying to skin. Application: Hot: Microwave: place gel pack into microwave for approximately 30 seconds (if the gel pack is at room temperature) or 1 minute (if the gel pack is frozen) on high power. After this time, check that the correct temperature has been reached. If not, further exposure should be in 10 second bursts. Times are based on a 600W microwave. Adjust heating times accordingly to suit the power of your microwave. Hot Water: Bring water to the boil, remove from heat and immerse the gel pack for approximately 4 - 10 minutes. After 4 minutes, check every 1 minute to see if the correct temperature has been reached. Ideal to use for: temporary relief of muscle aches, back pain, sinusitis, menstrual cramps. This would be perfect for the doctor's office, pharmaceutical collector, or entrepreneur! Thanks for looking and good luck!