Arginine: It is a chemical building block, an amino acid which is mainly found in red meat, fish, poultry, dairy products, etc. It is useful in boosting the immune system and treating male infertility and erectile dysfunctions. Maca Root: Maca plants are grown in  Zyntix  central Peru and its roots are used extensively in making several medicines. Absolutely not! All ingredients that are used in its formulation are completely natural, organic and scientifically tested under expert supervision.

http://www.healthynutritionfacts.org/zyntix-male-enhancement/