So I talked some more with the guys at Mega Gear and flat-out told them I wasn't really eager to inject their products. In response, they told me that their oil-based products are manufactured not in-house, but actually by a third-party pharmaceutical company (allegedly "the largest one in the Czech Republic") that manufactures veterinary drugs as well as human drugs. I was also told that, most likely, I wouldn't get ANY results at all by taking the oil products orally or sublingually. At least they were honest.
So now that creates the dilemma of whether I should risk injecting this stuff or take it orally and completely waste it.