Most weight-loss drugs that are now illegal or restricted have shown to be unsafe in one way or another. The most common risks associated with weight-loss products tend to be issues with the heart and blood pressure.

According to American Academy of Family Physicians, the ingredients you should look for in energy boosters are Ephedra, Bitter Orange, Guarana, Country Mallow, Yerba Mate or Caffeine. Appetite suppressants should include Glucomannan, Psyllium, Hoodia or Guar Gum.

Frustratingly, some of pregnancy's most annoying symptoms are difficult to treat because of restrictions placed on what medications you can take during pregnancy. In some cases, supplements can act as a stand-in for medications, but you should check with your healthcare provider first.

Clenbuterol, or Clen as it's popularly referred to, is a beta-2 adrenergic agonist similar to ephedrine. It has been found to help burn fat, even when the user is not exercising.

Although sales for diet pills are down, they're still a major money maker for stores like GNC. The retailer that sells health and nutrition-related products has a list of best-selling items, including the top diet pills.

Adipex or Adipex-P, generic name phentermine hydrochloride, is a prescription drug treatment used to treat obesity in combination with regular exercise and a healthy diet. It is classified as an anorexiant and is prescribed typically for a period of no more than 12 weeks.

In 2013, Americans spent more than $60 billion a year trying to lose weight, according to Marketresearch.com. Isopure is a nutrition supplement company that offers a variety of products, although none specifically marketed for weight loss.

To help speed up weight loss, some people turn to diet aids such as Alli, an over-the-counter pill that helps reduce the amount of fat your body processes from the meals you eat. Using Alli does not guarantee weight loss, but some people find that following the plan helps keep them on track.

If you're looking to lose weight, using laxatives might seem like a way to keep your body from absorbing the calories in food. However, this isn't an effective weight loss method and can lead to serious health complications. Ex-lax is an over-the-counter laxative used to treat constipation.

It sure would be nice to simply pop a pill to lose the weight. And since it has only one active ingredient, Lipozene may sound like a safe way to go. But when it comes to weight loss, it's never that simple, and there's no pill that makes pounds drop effortlessly.

Slim-Fast weight-loss products are a popular way to lose weight, but kids who use them could be putting themselves at risk. While occasional use of the shakes and bars created by Slim-Fast might not be a problem, extended or frequent consumption might lead to health problems or teach kids unhealthy styles of eating.

Over-the-counter diet pills claim to curb your appetite and trim you down -- sometimes in a matter of mere days. These pills, which often combine caffeine with various herbs and botanicals, come with a caveat emptor: these are not weight loss drugs but rather dietary supplements.