I hadnt heard of it before, but after understanding that its a naturally occurring peptide used to support healing, I decided to give it a try
Effects of postharvest brassinolide treatment on the metabolism of white button mushroom ( Agaricus bisporus ) in relation to development of browning during storage
Vita Health Products, the producer of Costco's Kirkland-branded supplements, has issued a recall of the Kirkland Signature Women 50+ multivitamins due to the presence of foreign material

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We also note that the trial seems to be unblinded, which could introduce bias
Legal status varies by jurisdiction, and researchers should understand the regulatory framework in their location before acquiring either compound