Nature's Way  Buy Bitter Orange pills
The immature Citrus aurantium has been used for thousands of years in ancient Chinese medicine. Nature's Way Bitter Orange Extract provides high levels (6%) of the key compound synephrine, which has been the focus of study for its thermogenic properties. High doses can increase heart rate and increase metabolism. We suggest at first to only use half or one capsule until you find out how this product works with your system. We also suggest you use it by itself without other supplements or medicines the first couple of times you try it.

Supplement Facts:
buy Bitter Orange - 450 mg  - Citrus aurantium dried extract (fruit)

Compounds in the herb
Extracts from bitter orange contain a rare combination of five adrenergic amines: synephrine, N-methyltyramine, hordenine, octopamine, and tyramine.

Other weight loss options to consider
5-HTP is a nutrient that helps curb appetite in some individuals . 5-HTP, by converting into serotonin, can be used temporarily to improve will power and decrease the urge to eat until more established weight loss habits are in place.
Hoodia is a cactus plant extract from the Kalahari desert in South Africa that has been getting a lot of attention lately.
Pectin Grapefruit can be found here.
Ephedra is no longer available over the counter.

What do you think of bitter orange supplement compared to hoodia? And also, what do you know about Advantra Z?
    See review of Advantra Z which is a trademarked extract. It appears thus far that hoodia may be more effective than a bitter orange supplement and quite likely safer.

Mechanism of action
The amines in bitter orange stimulate beta-3 cell receptors with less of an effect on other alpha and beta receptors. Stimulation of these beta-3 receptors elicits the breakdown of fat. Simultaneously, this stimulation causes an increase in the metabolic rate – thermogenesis – which burns calories. Bitter orange may also act as an appetite suppressant.

Bitter orange side effects, caution, risks
Increased body temperature may occur as the dose is increased. Drink plenty of cold water. Use the pills may increase risk of heart irregularities and increase blood pressure. Discuss with your physician if you are taking medicines or have a chronic health condition. Long term effects or potential harm from high dose ingestion is still not fully understood. We do not suggest using bitter orange extracts along with stimulant herbs such as ginseng, tribulus, mucuna and tongkat ali.

Review and summary
Bitter orange extract may help one lose weight but caution is advised. Use the least dosage possible and take breaks from use. Do not take it daily for many weeks or months without a break.