50 mg a day. It's safe and expensive. Up to 300 mg a day can be used. It's available at WalMart and is expensive. It is extremely safe.
Dandelion is extremely safe.
Inhibits fat production in animals and may also decrease appetite. A recent JAMA article showed no effect in humans. 500 mg 3 times a day. Mile High Publishing, Dept 4060, PO Box 277, Golden, CO 80402-0277. About 4,000 references.