Dr. Saya wrote this : Both myself and Dr C have been using CDG in select patients with mixed results. It can sometimes help with elevated E2 symptoms and also can sometimes give a boost to libido (hopefully ERO reads this as I was planning to discuss this, amongst others, during my next chat with him).
I won't jhurt to try it I think its 500-1000mg once a day, just google it, but lowering Estrogen, extremely doubtful. It may help with some of the symptoms though.
I understand you are in Canada and don't have access to the sensitive estradiol test, but what is your estradiol value, and what symptoms of elevated estradiol are you experiencing?