Lipo-6 Black Hers Ultra Concentrate by Nutrex Research is one of the most effective fat burners specially formulated for women. Its formula includes Advantra Z® (citrus aurantium, synephrine), yohimbine, and caffeine, along with replenishing agents like rosemary, resveratrol, d-limonene, and squalene, to maintain the sensitivity of the central nervous system. With 200 mg of caffeine per dose, this supplement promises extreme potency in a single rapid-absorption liquid capsule. It comes in a container of 60 capsules and is not recommended for anyone under the age of 18 or those sensitive to caffeine.