Large doses of Vitamin C helped my nightsweats a lot. It's the only thing that helped them. I used both ascorbic acid C and calcium ascorbate, probably a full gram every 4-5 hours or so, for weeks. They eventually subsided, probably due to chelation. I do know for sure mine were due to mercury poisoning however.

Vogel's Nature Doctor book states that 'when a feverish condition exists, the natural therapy method requires that first of all the bowels be thoroughly cleansed.'

He goes on to discuss herbal enemas and natural laxatives. He mentions goldenrod,, horsetail, parsley, rosehips.

And of course from my own collection, there is always feverfew, so named for a reason, use orally, not in an enema.

You can get more info on any of those items in various places on the net.