Weight Loss Pills

Pills for Weight Loss With Insufficient Evidence

Most ingredients in weight loss pills do not have sufficient evidence to recommend them as being safe and effective. These ingredients include:
While these ingredients may be safe and effective for weight loss, it may be a good idea to wait until more information is available about them.

Possibly Unsafe or Ineffective Weight Loss Pills

Some products have evidence that suggests they are unsafe or ineffective or both. If the evidence overwhelmingly suggests that a product is unsafe, the FDA may actually step in and ban certain products or ingredients. This was the case with ephedra. Ephedra was a popular ingredient in weight loss pills and may have been effective. However, ephedra has stimulatory effects, increasing the heart rate and blood pressure, and increasing the risk of strokes, heart attacks, seizures, and other serious problems. Even though it has been banned, you may still be able to find ephedra products, especially on the Internet. Please remember that these products were banned for a very good reason.
Sometimes, people take non-prescription decongestants for weight loss. Like ephedra, these products may suppress the appetite, but tend to have stimulatory effects. Using decongestants (such as pseudoephedrine or phenylephrine) for weight loss can be dangerous.
Some products appear to be ineffective for weight loss. These include:
  • Blue-green algae
  • Garcinia
  • Glycerol
  • Guar gum
  • Inulin
  • Tiratricol.
Currently, available evidence does not support the use of these pills for weight loss. However, future studies may provide additional information that indicates these products may be effective.
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