Herbal Weight-Loss Formula

There are a multitude of herbal weight-loss formulas on the market containing a cocktail of ingredients, sometimes as many as 20 different herbs, botanicals, minerals, vitamins, and other additional ingredients. At least one of six popular herbs is being added to various formulas with unknown long-term effects. The FDA does not approve weight-loss formulas before they go on the market.

Bitter Orange

Bitter orange in weight-loss formulas is being touted as the new "ephedra substitute" amid claims that it decreases the appetite. Ephedra was banned by the FDA because of deaths and 800 cases of toxicity. According to traditional Chinese medicine, ephedra should be used under the supervision of a qualified herbalist. It was sold over the counter as a weight-loss formula. The Mayo Clinic thinks bitter orange may have side effects similar to those of ephedra.

Hoodia

Hoodia is a flowering, cactus-like plant native to the Kalahari Desert in southern Africa. It is said to decrease appetite. When sold for weight loss, the formula often contains other herbs or minerals such as green tea or chromium picolinate. The herbs are taken in capsules, chewable tablets, liquid extracts or teas. However, there is no scientific support for hoodia's use as a weight-loss supplement.

Chromium

Chromium is said to be useful in reducing body fat and building muscle. Because it assists in the cellular response to the hormone insulin, it is often associated with the treatment of diabetes and used in weight-loss formulas. According to the Mayo Clinic, it is safe but unlikely to build muscle or cause weight loss.

Conjugated Linoleic Acid (CLA)

Conjugated linoleic acid has been sold in formulas claiming to help decrease appetite and burn body fat while preserving muscle. The Mayo Clinic agrees that it might decrease body fat and increase muscle, but it is not likely to reduce total body weight. Side effects include diarrhea, indigestion and other gastrointestinal problems.

Green Tea Extract

Green tea extract has been used alone or in various formulas to increase calorie and fat metabolism and decrease appetite. However, the Mayo Clinic says there is not enough evidence to support such claims. Green tea extract has caffeine which can cause insomnia, frequent urination, anxiety and irritability. It also has vitamin K, which can make anticoagulant drugs, such as warfarin, less effective.

Warning About Herbal Weight-Loss Formulas

According to the FDA, a manufacturer does not have to prove the effectiveness or safety of herbal dietary supplements before putting the product on the market. Manufacturers are expected to follow good manufacturing practices (GMPs). Consumers are advised to be aware that even though herbs come from natural sources, that does not always mean the product is safe.