Blackbull By Spartan Erectile & Testosterone Potency and Testosterone for Men 4 Capsules is a supplement designed to increase potency and testosterone in men. Each package contains 4 capsules. Who is it for? This product is indicated for men looking to increase their potency and testosterone levels. Pharmaceutical advice At farmaciasdirect we recommend that you read the instructions before using this product, especially if you suffer from any condition or allergy to any of its components. If you have any questions, you can contact us through the pharmacy advice service available on our website so that one of our experts can advise you as best as possible.