Is celebrex (celecoxib) renal failure reversable?

Not usually: Celebrex (celecoxib) and the other meds in the group "nsaids" typically cause damage to the kidney from longer term use. Often the injury is added to underlying kidney function that is already abnormal. At this point, it is important to avoid the use of any other nsaids such as advil or Motrin - or the typical drug name ibuprofen.

NSAID related AKI: Nsaids (nonsteroidal anti-inflammatory drugs) can cause may types of kidney injury. They cause reversible decreases in blood flow. They are associated with, otherwise unnoticed, allergic damage, interstiial nephritis. There are also rare kidney disorders associated with nsaids, minimal change disease. Nsaids during infection can cause severe failure. Longer and more severe injuries = less recovery.