He was right... NSAID's like ibuprofen do help speed up the recovery process in ligament and tendon injuries... They keep inflammation down in the surrounding tissue after injury, and after surgery, allowing the body's natural healing process to function better.
Obviously, you are right in saying they don't heal the injury themselves, but Zach didn't say that or imply it... I think you just misinterpreted what he was trying to say. Not really a big deal, either way.
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