About the Product
Nutrex Research's Lipo-6 Black is one of the most iconic and recognized fat burners on the global supplementation market, with decades of history and millions of users. Formulated with 9 active ingredients in confirmed dosages — delivered in liquid gel capsules (Liqui-Caps) for ultra-fast absorption — Lipo-6 Black simultaneously covers all aspects of fat loss: thermogenesis, lipolysis (mobilization of stored fat), appetite suppression, energy and cognitive focus, and unlocking stubborn subcutaneous fat (via yohimbine and alpha-yohimbine). Nutrex's exclusive Liqui-Cap technology pre-dissolves the active ingredients in a liquid medium inside the capsule, allowing for faster gastric and intestinal absorption than conventional tablets or capsules. 120 liquid-caps. Dosage: 3 capsules in the morning + 3 capsules in the afternoon (maximum 6/day), without food. Vegan (HPMC capsules).
Ingredients per serving (3 capsules): Choline Bitartrate 100mg + L-Tyrosine 250mg + Caffeine Anhydrous 220mg + Theobromine 125mg + Grains of Paradise (Aframomum melegueta) 25mg + Black Pepper Extract (BioPerine®) 5mg + Yohimbine HCl 3mg + Rauwolscine (90% alpha-yohimbine) 1mg + Huperzine-A 1% 100mcg. Other ingredients: Glycerin + Vegetable Capsule (HPMC) + Purified water + FD&C Colorants.
Benefits
Liqui-Cap Technology: the liquid absorption that sets Lipo-6 Black apart from conventional thermogenics:
Nutrex's Liqui-Cap technology is the central technological differentiator of Lipo-6 Black compared to most conventional encapsulated fat burners (which contain pressed dry powder). The active ingredients of Lipo-6 Black are pre-dissolved in a liquid medium (glycerin + purified water) inside the vegetable gel capsule. When the capsule dissolves in the stomach (typically in 5 to 10 minutes, vs. 20 to 30 minutes for compressed powder capsules), the ingredients are already in solution and are immediately absorbed by the gastric and intestinal mucosa without the need for additional dissolution. This faster absorption translates into a faster onset of effect (perceptible energy and thermogenesis in 15 to 20 minutes vs. 30 to 45 minutes for conventional tablets) and potentially higher bioavailability for ingredients that have limited absorption in solid form.
Caffeine Anhydrous 220mg + Theobromine 125mg: the stimulant duo with a smooth energy profile:
The combination of Caffeine Anhydrous (220mg) and Theobromine (125mg) is the energetic and thermogenic core of Lipo-6 Black, and it is one of the most clinically well-documented stimulant duos on the market. Caffeine (220mg per 3-capsule dose, 440mg total/day in double doses) inhibits phosphodiesterase (increasing cAMP), antagonizes adenosine receptors (fatigue suppression), activates the sympathetic nervous system (thermogenesis and adrenergic lipolysis), and suppresses appetite via dopaminergic and adrenergic antagonism. Theobromine (derived from cocoa, 3,7-dimethylxanthine) is a xanthine with a similar structure to caffeine but with milder and longer-lasting effects: a half-life of 7 to 12 hours (vs. 3 to 5 hours for caffeine), lower affinity for adenosine receptors (less central stimulant), but peripheral vasodilation (via inhibition of vascular phosphodiesterase) and prolonged thermogenesis. The combination creates a two-phase energy profile: a rapid and intense onset from caffeine + a long and smoother sustain from theobromine, without the typical "crash" of isolated caffeine.
Grains of Paradise (Aframomum melegueta) 25mg: the activation of brown adipose tissue:
Grains of Paradise (a relative of cardamom) is the most innovative thermogenic ingredient in Lipo-6 Black and its main differentiator from conventional fat burners based solely on caffeine + synephrine. Its active compound, 6-paradol (and related 6-gingerol and 6-shogaol), activates β3-adrenergic receptors in brown adipose tissue (BAT), stimulating non-shivering thermogenesis via mitochondrial uncoupling (UCP1 — Uncoupling Protein 1). Brown adipose tissue "burns" energy as heat instead of storing triglycerides, unlike white adipose tissue. The study by Sugita et al. (2014), published in the British Journal of Nutrition, documented that 40mg/day of Grains of Paradise extract for 4 weeks increased resting energy expenditure and reduced visceral abdominal fat in young women compared to placebo, without significant cardiovascular side effects.
Yohimbine HCl 3mg + Rauwolscine 1mg: unlocking stubborn subcutaneous fat via α2-adrenergic antagonism:
The combination of Yohimbine HCl (yohimbine, alkaloid from Pausinystalia yohimbe) and Rauwolscine (alpha-yohimbine, alkaloid from Rauwolfia vomitoria, standardized to 90%) is the most potent and differentiating component of Lipo-6 Black for mobilizing "stubborn" subcutaneous fat — fat areas resistant to lipolysis such as the lower abdomen, flanks, and thighs in men, and hips, thighs, and buttocks in women. Fat in these areas has a high density of α2-adrenergic receptors (which inhibit hormone-sensitive lipase and block lipolysis when activated by noradrenaline), making it resistant to mobilization even with severe caloric deficit. Yohimbine and alpha-yohimbine are α2-adrenergic receptor antagonists — by blocking these receptors, they remove the anti-lipolytic "brake" that keeps stubborn subcutaneous fat trapped in adipocytes, allowing its mobilization by noradrenaline and adrenaline in the α2-blocked phases. Rauwolscine (alpha-yohimbine) has a higher affinity and potency for the α2 receptor than conventional yohimbine, making it more effective per mg. The combination of the two forms is synergistic: yohimbine covers conventional α2 blockade, rauwolscine adds greater potency and duration.
Choline Bitartrate 100mg: hepatic fat metabolism and cholinergic focus:
As described in the Power M.F section of Marvelous Nutrition, Choline Bitartrate is a precursor to acetylcholine (for focus, neuromuscular transmission, and mind-muscle connection) and supports hepatic fat metabolism (choline is essential for the formation of VLDL which exports triglycerides from the liver to tissues). In the context of prolonged caloric deficit, choline support prevents hepatic steatosis (fat accumulation in the liver) that can occur with increased mobilization of fatty acids to the liver without sufficient choline for export via VLDL.
L-Tyrosine 250mg: catecholaminergic support during the cutting phase:
As described in Amputation by Marvelous Nutrition, L-Tyrosine replenishes the substrate for the synthesis of dopamine, noradrenaline, and adrenaline — catecholamines whose synthesis can be compromised during prolonged periods of caloric restriction. The dose of 250mg per serving (500mg/day total) is a moderate and clinically relevant dose for cognitive and motivational support during caloric deficit.
BioPerine® 5mg: maximized absorption of all ingredients:
BioPerine® (black pepper extract standardized to 95% piperine, a registered trademark of Sabinsa Corporation) is the absorption enhancer included in almost all high-quality thermogenics. As described in multiple previous products, piperine inhibits first-pass metabolism enzymes (CYP3A4, UGT) and efflux proteins (P-gp) in the intestinal epithelium, increasing the bioavailability of multiple active compounds by 20 to 2000%.
Huperzine-A 1% 100mcg: cognitive focus via acetylcholinesterase inhibition:
Huperzine-A (an alkaloid from the moss Huperzia serrata, extracted at 1% concentration) is a reversible inhibitor of acetylcholinesterase (AChE) — the enzyme that degrades acetylcholine in the synaptic cleft. By inhibiting AChE, Huperzine-A prolongs and amplifies the cholinergic signal, improving cognition, working memory, focus, and mental clarity. This cognitive effect is especially relevant during intense cutting phases with severe caloric deficit, where cognitive decline and difficulty concentrating are common. Huperzine-A has a long half-life (~10 to 14 hours) and accumulates with daily use — it requires the 8-week on + 4-week off cycle indicated in the Lipo-6 Black instructions to avoid desensitization.
Usage
Recommended dosage: Take 3 capsules in the morning and 3 capsules in the afternoon, without food (at least 30 minutes before a meal or 1 hour after). Never take more than 6 capsules in 24 hours. Do not take within 6 hours before bedtime (caffeine + theobromine can impair sleep). Use in cycles: maximum 60 days of continuous use followed by 15 days off (some protocols indicate 8 weeks on + 4 weeks off). For caffeine-sensitive users: start with 1 capsule in the morning and 1 in the afternoon and progressively increase as tolerated.
