To give you a different perspective, Boron CAN lower SHBG. I have lab results where I tested before and after Boron supplementation and Boron did make a difference in SHBG. The other products (stinging nettle and tongkat ali) did not affect my blood results at all.
At one time, I didn’t think that Boron was helping. But it did. And unfortunately, there is no test that determines whether you are “genetically prone” to SHBG. That is what the doctors have said after eliminating all common reasons, when they couldn’t determine a cause.
My Pellet story and experiments: High T, FSH, SHBG, Low E2 No Libido. My Lab Results (pellets)