I'm actually a certified Herbal specialist, personally a lot of these ancient remedies are a load of crap. All Noni really is, is an herbal diuretic thats going to help detoxify (ie make u crap and piss like no ones business.) However there is alot of proof in certain ancient medicines like shitake, matake and reishi mushrooms. Here's a good resource:
http://www.vitaminshoppe.com/content...YFAFYKCQL00UNE

I used to be a store manager for the vitamin shoppe, all the info is third party.

Alot of todays suppliments deterred from ancient medicined though. Things like Noni, Mangosteen and crap like that do have one good thing going for them and thats because there natural and liquid they are really easy for your body to asimilate and break down and cause minimal damage to the liver where most perscription drugs do really radical things to your body.

was there a reason why your dad wants to take this stuff?

ps- Noni isn't a chinese medicine, i think it's Indian or polynesian, something like that.