That's been observed here with any of the myo inhibitors administered subQ. Not sure on the reason, but with various sources of the products themselves the result was all the same. IM solves it, so there was no reason to dissect it further.
Hey dudes, new to the site, felt like adding input. Definitely not SubQ, even tried diluting with more sterile water and site injected in multiple sites, same result, painful red welts.