First off, if I took 30 mg of prednisone in the evening I would never sleep. That type of dosage does give lots of people insomnia so it is best taken in the morning. Usually, doctors prescribe the entire dose to be taken at one time. HOWEVER, not all doctors do that so you need to call the office in the AM and ask for clarification.
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CD, Ankylosing Spondylitis, lupus, small fiber peripheral neuropathy, avascular necrosis, peripheral artery disease, degenerative disc disease, and a host of other medical problems.