Medrol is used for treating severe allergies, arthritis, asthma, certain blood disorders, and skin conditions. It may also be used for other conditions as determined by your doctor. 
Use Medrol as directed by your doctor. Check the label on the medicine for exact dosing instructions.  
Take Medrol by mouth with or without food. If stomach upset occurs, take with food to reduce stomach irritation. 
Medrol is a corticosteroid. It works by modifying the immune system response to various conditions and decreasesing inflammation. 
If you miss a dose of Medrol, skip the missed dose. Go back to your regular dosing schedule. Do not take 2 doses at once. 
Store Medrol at 77 degrees F (25 degrees C). Brief storage between 59 and 86 degrees F (15 and 30 degrees C) is permitted. Store away from heat, moisture, and light. Do not store in the bathroom. Keep Medrol out of the reach of children and away from pets.