The effects of the steroids can wear off over time, so you may want to have top-up treatments.However, there are limits to the number of steroid injections you can have in a specific timeframe. You can have up to four steroid injection treatments a year. You’ll usually need to wait at least three months between injections.  This prevents the steroid building up in the targeted area, which may increase the risk of side effects. We’ll discuss any concerns you have around side effects, and help you manage these effectively if they arise.