Happy Inside Drinks is a UK-based brand founded during the COVID-19 lockdown by Charlie Knockton. It specializes in gut health drinks made with natural ingredients, designed to improve digestion and support immunity. These vegan-friendly, gluten-free drinks contain no added sugar, no bubbles (to prevent bloating), and feature gut-friendly prebiotic fibre. The drinks are crafted with ingredients like Japanese knotweed, lemon, yuzu, ginger, pomegranate, and passion fruit, aimed at promoting gut and overall health.