What Is the Myers Cocktail and How Does It Work? In a Myers Cocktail IV, there is typically six of most common vitamins that humans are deficient in. At The Osteopathic Center, we took it up a notch to the fourteen most common vitamins! Call our Myers Cocktail The IV Lounge Myers' Cocktail IV Las Vegas IV Vitamin Therapy Clinic Boost Health with Myers' Cocktail IV Therapy Treatments Mobile IV Medics