It comes down to something called absolute bioavailability. Absolute bioavailability is the percentage of a substance that can be broken down and utilized by our biological processes through intravenous methods. In digestion or other non-injectable routes, bioavailability is not absolute, and can vary based on age, stress, health conditions and other factors.
By contrast, vitamin injections and IV micronutrients have 100% bioavailability. So, when you get a Skinny Shot in Roanoke at Nourished IV, you are circumventing variables would otherwise make the intake of nutrients less effective!