Everything else the review included, 35 of 36 studies, was done in animals, much of it by a single Croatian research group going back to the 1990s1
Some users report more rapid recovery with local injections, while others find systemic administration equally beneficial 2 5
The cost per vial reconstituted is negligible
Xing L, Dai Z, Jabbari A, Cerise JE, Higgins CA, Gong W, de Jong A, Harel S, DeStefano GM, Rothman L, Singh P, Petukhova L, Mackay-Wiggan J, Christiano AM, Clynes R (2014) Alopecia areata is driven by cytotoxic T lymphocytes and is reversed by JAK inhibition
Normal activities, including work and exercise, can be resumed immediately after the treatment