I've been sober 8 years from um heroin and meth. It was a feeling when I drank it that kind of brought me back to how I was. This 2 oz herbal tonic called feel free is sold at gas stations and convenience stores.It's advertised as a mood and energy booster made with plant-based cava root andratom. What does do your body. The Food and Drug Administration has actually designated that specifically acts as an opioid.NBC News reached out to Botanic Tonics, the maker of Feel free, for a response to claims that th ...