[surferjoe2007]

RC has a very large amount of phytoestrogens, probably enough to fill all the receptors. But they're weak in effect. So once they fill them all that's it. And it competes with other sources of estrogen. That's why RC is often taken to combat excess estrogen, even with as little as 400 mg. Other herbs like PM and hops are the reverse: small concentration with much higher potency. They can cause a higher estrogen effect without blocking too many receptors.

SP likewise blocks the conversion of testosterone into DHT. Once it's fully blocked it's blocked. It won't reduce other testosterone besides DHT if you take more. Besides that it has an extraordinary safety record.

It is possible that FG also increased the effect of whatever estrogen she's getting, whether RC or her own or both. Though everything except hot flashes fits low blood sugar: dizziness, having trouble standing and sweating. Sugar is the body's fuel, so not having enough circulating causes weakness. If "hot flashes" refers to heart palpitation and sweating then it also fits low blood sugar. Either way whether it's estrogen or blood sugar, FG is most likely the problem. And it's easy to check whether or not it's low blood sugar by seeing if sweets help.