how long does it take for a shoulder injection to work
After injection, corticosteroids work to reduce inflammation (heat, redness, swelling, & pain) in and around the joint. As a result you should feel less pain, swelling, stiffness and warmth and be able to function a little easier.ost injections typically take 24-48 hours to take full effect. If local anesthetic was given with the steroid injection, you may feel improvement relatively quickly. The duration of improvement varies.