What are the Side Effects of Stacker 3 with Chitosan?

Fact Checked

Fat burners have a deserved reputation for being on the dangerous side. Stacker 3 with Chitosan, produced by NVE, is an ephedra-free fat burner sold at nutrition stores and on online supplement websites. Stacker 3 can have serious side effects if it is not used properly.

Stacker 3 with Chitosan

Stacker 3 with Chitosan is a pill-based supplement that claims it can help you lose weight. The product contains green tea leaves and guarana. Stacker 3 with Chitosan has 250 mg of caffeine per serving. Chitosan, a fat blocker, is also included in the formula. Stacker 3 with Chitosan may be able to help you lose weight if used as directed, but it can also lead to a slew of undesirable side effects.

Health Risks

Though the Food and Drug Administration banned ephedra-based products in 2003, fat burners still pose a threat to users. Fat burners are not regulated by the FDA, so they may include substances that you may not realize have an adverse effect on your health. Fat burners such as Stacker 3 with Chitosan can cause high blood pressure, anxiety and even heart attacks or strokes. A significant reason for these side effects is related to the caffeine content of Stacker 3 with Chitosan.


The Mayo Clinic states that the average daily consumption of caffeine in adults is between 200 and 300 mg. One serving of Stacker 3 with Chitosan has 250 mg of caffeine, and this dosage is taken three times daily. The side effects of consuming this high level of caffeine can include restlessness, inability to sleep and a faster heartbeat. In addition to these side effects, your body will become used to the caffeine, meaning that you may become dependent on the caffeine content of Stacker 3 with Chitosan, even as the fat-burning capabilities of the supplement subside due to constant use.

Chitosan Side Effects

The most recent edition of Stacker 3 contains chitosan, which has gained popularity on its own as a supplement that traps fat and prevents it from entering your bloodstream. While chitosan doesn't have the side effects that fat burners have, chitosan can cause gastrointestinal discomfort. Furthermore, case studies cited by the Memorial Sloan-Kettering Cancer Center suggest that chitosan doesn't provide the fat-binding benefits it claims to provide.