Black Blood Caf+ 300 g by BioTech USA is the enhanced, creatine-free version of the Black Blood pre-workout. With a high caffeine dose of 400 mg per serving, it’s designed to boost nitric oxide and carnosine production. Key ingredients include L-arginine hydrochloride, beta-alanine, and L-citrulline. This supplement also contains magnesium, niacin, and vitamin B6, which help mitigate fatigue and tiredness, along with zinc that contributes to normal fat metabolism and normal testosterone levels. Each 300 g package contains 30 servings of 10 g each. Precautions: not suitable for children, pregnant women, breastfeeding mothers, caffeine-sensitive individuals, or those with specific health issues. Store in a cool, dry place and consult a healthcare professional before use if pregnant, breastfeeding, or having health problems.