At Dr. Saya's recommendation, I took stinging nettle for several months while trying clomid monotherapy. Pre-clomid, my SHBG was at 52, and it got as high as 68 while on clomid. Perhaps the stinging nettle kept it from going even higher, but I don't think it really did anything for me.
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I'm now about 2 months into TRT and will have my first bloods in a few weeks. I have not been taking stinging nettle since beginning TRT, so I'll be interested to see where my SHBG is now.