I won't have another surgery without it. I've had to have both distal bicep tendons reattached. At 12 weeks after my first repair I was still carefully extending my arm fully but it was a full 5-6 months before I was fully recovered.
My second repair (other arm) I was able to extend my arm fully less than 2 weeks post op (Scared myself shitless when I woke up to my arm at my side after falling asleep without my brace) and I was fully recovered after 4-6 weeks but was still careful with it for the full 12 weeks. Bought a 100iu kit and ran 5iu a day until I was out.