Founded in 2020 by Sunna van Kampen, Tonic Health is a vitamin brand on a mission to “fix the nutrition industry”. Sunna launched the business after struggling with his own health and discovering how widespread nutrient deficiencies had become in modern diets. Tonic was built to close those nutritional gaps with “high-strength, no junk vitamins”. The brand gained rapid traction through social media, where Sunna’s direct food-content helped build an audience of over 1.7m followers across social platforms. In 2025, Tonic raised a £2.8m Series A round to help accelerate growth.