Zantrex-3 is an over-the-counter weight loss and energy supplement manufactured by Zoller Laboratories that has not been researched through clinical trials and has not been approved by the Food and Drug Administration. Among the ingredients of this supplement is a significant amount of xanthine (the primary agent in caffeine) in excess of 300mg per regular two-capsule serving, so individuals who are highly sensitive to caffeine or those who have hypertension (high blood pressure) and cardiac conditions should not take this supplement. Additionally, women who are pregnant should not take Zantrex because of its high caffeine content.
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Zantrex-3 has several potential cardiovascular side effects. Specifically, this supplement may increase heart rate and cause irregular heartbeats or palpitations. Additionally, an increase in blood pressure may result. If you have a medical history of cardiovascular disease, you should not take this supplement because of the stimulant effects of caffeine. In general, people taking this supplement should reduce or limit their intake of caffeinated beverages to avoid potential side effects.
The caffeine in Zantrex-3 may lead to gastrointestinal problems, such as nausea and vomiting, decreased appetite, diarrhea and general stomach discomfort. Such side effects may subside, but do not ignore these symptoms if they persist; for example, continued diarrhea can lead to dehydration. Seek medical attention if any of these effects persist.
Caffeine can act as a mild diuretic, so Zantrex-3 may increase frequency of urine output. Consequently, individuals with a medical history of kidney disease or renal problems should consult a physician before taking this supplement.
The high amount of caffeine present in this substance may produce effects that involve nervousness with jitters, sleep problems and irritability. Changes in mood may occur as well as increased feelings of anxiety or panic. Individuals with anxiety or mood disorders should check with a physician before taking Zantrex-3.