The U.S. Food and Drug Administration is warning consumers not to use 20 weight-loss supplements found to contain the drug sibutramine.

An FDA laboratory analyses confirmed the supplements contain sibutramine, the active ingredient in weight-loss medication Meridia, previously found to substantially increase blood pressure and heart rate and also linked to an increased risk of heart attack and stroke. It was removed from the U.S. market in October 2010. The supplements are sold on various websites and in some retail stores in the form of capsules and as coffees and teas. Some are labeled “100% natural.”

Here’s a roundup of the tainted supplements:

• Acai Berry Soft Gel ABC
• Advanced Slim 5
• A-Slim 100% Natural Slimming Capsule
• Botanical Slimming
• DaiDaiHuaJiaoNang (also contains phenolphthalein, a solution used in chemical experiments and a suspected cancer-causing agent not approved in the U.S.)
• Dream Body Slimming Capsule
• Fruit Plant Lossing Fat Capsule
• Health Slimming Coffee
• Ja Dera 100% Natural Weight Loss Supplement
• Leisure 18 Slimming Coffee
• Lishou
• Lose Weight Coffee
• Magic Slim Tea
• Magic Slim Weight Reduction Capsule
• P57 Hoodia
• Pai You Guo Slim Tea )also contains phenolphthalein, a solution used in chemical experiments and a suspected cancer-causing agent not approved in the U.S.)
• PhentraBurn Slimming Capsules
• Sheng Yuan Fang
• Slender Slim 11
• Tengda

Bottom line: The FDA is advising consumers not to use these tainted products, and we couldn’t agree more. We’ve long advised against using weight-loss supplements because the risky side effects often outweigh the benefits. If you want to lose weight naturally, stick with these two tried-and-true weight-loss methods: diet and exercise.

Read more on dangerous supplements and steps you can take to make sure the supplements you use are safe and beneficial.