>>1498676xenoestrogens aren't very well researched compounds, so it's hard to say what would be effective in blocking them
that said, if you care about your voice depth, feminizing hormones don't matter at all
voice can only get deeper from taking hormones (the male ones), due to changes induced by androgens larynx grows and vocal cords get longer and thicker
that's why mtf trannies have so weird voices - they hire voice coaches to help them sound more feminine and sometime get voice feminization surgeries )those generally don't work very well either)
so depending on your age if you really insisted on on making your voice deeper, regardless of other health risks, roiding could be solution, but I'm not sure if there exist any studies comparing various roids and age when they are still effective
there also exist voice deepening surgeries (not really masculization because ftm trannies get that from hrt), there is demand for them by various managers and salesman who want to sound more manly and confident
and one more thing i remembered. voice is kinda easy to train to be deeper - famous examples are Margaret Thatcher and Elizabeth Holmes; Kevin Samuels also mentioned that the voice he was speaking with he consciously adopted in his twenties
