i don't know the dosage or medical reason you were prescribed corticosteroids but i can say they are safe. and very effective in treating inflammation. most people do not get "high" when they take them but it they can interfere with sleep if taken near bedtime. if you are reluctant to comply with your doctor's recommendations it would be wise to discuss it with him/her.
my doctor prescribed a corticosteroid and an antibiotic. i am afraid to take the corticosteroid - what will they do? . i was told the corticosteroid would make me really "high" and i'm scared to take it but i am still very sick after 3 days.