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Optimum Nutrition Burn Complex Stim (with caffeine) Thermogenic drink mix is a 30-serve formula that is packed with clinically-backed fat burning ingredients that can be trusted, including:

Acetyl L-Carnitine

Acetyl L-Carnitine plays a key role in the processing of fat as fuel in cells throughout the body. Carnitine helps fatty acids pass through the mitochondria, where oxidation of the molecules occurs. This is the principle way in which these fat molecules are used as fuel.

Caffeine

Caffeine is the most effective and safest natural stimulant in a fat burner. It speeds up the metabolism and boosts energy.

Green Tea Leaf Extract

The catechins in Green Tea stimulate the fat burning hormone, norepinephrine. It is also packed with antioxidants.

Capsimax

Capsimax is the major pungent substance in red hot peppers, such as cayenne chili peppers. It is known to boosts up metabolism due to their thermogenic effects. By boosting metabolic activity, the body is able to burn more calories and fat. It also helps reduce cravings.

Guarana Extract

Guarana Extract is classified as a metabolic stimulant, which means it helps consumers burn more calories throughout the day because of its caffeine contents. It increases fat (lipid) metabolism, enhances weight loss, and increases the amount of energy used for basic metabolic function, such as breathing and digestion.

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