Prednisolone is not a pleasant drug to be on for many people at the doses of 15 or 20mg. As the dose is reduced down to 10mg and under, people tend to feel better. Unfortunately, it is the only medicine to treat Polymyalgia Rheumatica. In the short term, people can experience some mood disturbances, some puffiness and a bit of weight gain, sometimes blood sugars can increase, blood pressure can increase a little bit.
The most common thing that I hear from people is that it is a bit difficult to go to sleep at night and they feel like eating more. These feelings usually go away when the dose is reduced, and when the drug is stopped.
In the long term, prednisolone is associated with more side effects, and these effects are usually related to the dose that is being taken. The most significant ones are osteoporosis, diabetes, hypertension and glaucoma. Recent evidence suggests that long term 5mg prednisolone is not associated with significant long term side effects.