5 Dangerous Diet Pills and Supplements to Avoid

Most diet pills are tremendously beneficial. They lead to weight loss, which leads to better health, an improved outlook on life, and a myriad of other benefits. However, not all weight loss pills are created equal – some lead to these monumental improvements, while some just leave you with a bunch of side effects.

Over the years, I’ve noticed several regions, companies, and styles of promotion often associated with dangerous diet pills that shouldn’t be sold to people in the first place. With consistent connections like this, it becomes pretty clear what you need to avoid when it comes to weight loss supplements.

Many of these pills contain dangerous ingredients with proven side effects. If you are currently taking any of these pills, I advise you to cease use immediately and begin using a safer alternative instead, such as Phen375 or Proactol.

#1. Emagrece Sim/Herbathin

Emagrece Sim (also know as Herbathin) is a diet pill imported from Brazil. It contains many dangerous ingredients, including Librium, Prozac, and Fenproporex.

Many people have reported issues with this diet drug, including extreme mood changes and hypersensitivity. In fact, the FDA released a warning on Emagrece Sim/Herbathin back in 2006.

#2. Xiushentang

Imported from Japan, Xiushentang is a powerful weight loss supplement. It is marketed in the U.S. as Japan Rapid Weight Loss Diet Pill, but proves to have more effects than those of weight loss – it contains phenolphthalein, a likely carcinogen, and sibutramine, which increases the risk of heart attack and stroke.

#3. Pai You Guo

Paiu You Guo is a Chinese diet supplement which contains banned pharmaceutical substances, including the same sibutramine that Xiushentang contains.

Believe it or not, over 85% of Pai You Guo users reported at least one side effect, such as insomnia, anxiety, and/or dry mouth. It definitely didn’t come as a surprise that the FDA announced a voluntary recall of this product in 2009.

#4. Clenbuterol

Commonly known as just “Clen,” Clenbuterol is a steroid used to treat respiratory illnesses in animals. It was originally manufactured for animal use and animal use only, but it has made headlines during the past few years as it becomes a popular steroid for professional athletes, bodybuilders, and Average Joe’s and Jane’s looking to get in better shape.

Clenbuterol may lead to many outwardly positive changes, but it’s clear that it is not a healthy supplement to take. Though there are zero human studies, the effects it has on animals show that Clebuterol has clear and profound health risks, including damage to the heart.

#5: Qnexa

Qnexa is a combination of phentermine and topiramate, two well known compounds. Phentermine was part of the old Fen-Phen diet drug of the 80′s, which had spectacular results before being banned by the FDA. Topiramate has questionable health effects at best, with several studies pointing towards health risks.

The primary health risks and side effects with Qnexa are birth defects and heart problems. It will take longer for the FDA to fully evaluate the risks of Qnexa, but it’s wise to play it safe for now and stay away.


All diet pills have some potential side effects, but these side effects can be managed to only allow a certain amount of risk. It’s up to you to educate yourself on the right diet pills for your situation – we suggest getting started by reading our review of 3 safe diet pills that work fast for both men and women. After properly educating yourself on the right supplements for your weight loss situation, have a go at it – as long as you properly manage the risks, diet pills can and should be a contributing factor to your weight loss success.





Melissa Becker

Ever since losing over 50 lbs. in 2010, I’ve been writing informative blog posts and reviews for various diet products, such as teas, pills, and supplements. All products have been personally tested, in order to get the full story before posting it on this site.

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