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Tonic Health raises £2.8m Series A from Side by Side to tackle UK nutrient crisis and expand clean nutrition brand

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Tonic Health
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Sunna van Kampen
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£2.8m
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London, United Kingdom
Jul 1, 2025

Fast-growing supplement brand Tonic Health has raised £2.8 million in a funding round to accelerate its mission to address the UK's growing nutrient deficiency problem. The round includes investment from leading investors in the consumer sector including industry veterans Nigel Wray and Tom Singh, and funds including Side by Side Partnership and Rubix Partners.

Founded by Sunna van Kampen, Tonic Health has proven to be a leader in the health and wellness category, quickly becoming the most-watched vitamin brand globally on social media, with over 50 million monthly views and 1.3m followers. The brand is now listed in Tesco, Sainsbury’s, Asda, Morrisons, Boots and Ocado, and is driving a new standard in health and wellness through its commitment to maximum strength nutrition without unnecessary sugar, artificial sweeteners or additives.

Recent public health data shows that 9 in 10 people in the UK do not meet recommended nutrient intake levels. This issue is compounded by the dominance of ultra-processed foods, which now account for 57 percent of the adult diet and 61 percent of children’s diets. These products are typically high in calories but low in essential nutrients, contributing to widespread undernourishment.

Tonic Health’s formulations are sugar-free, free from artificial sweeteners and fillers, and are priced from just 45p per serving. In contrast to many supplement brands focused on trending ingredients and premium positioning, Tonic is built on simplicity, clinical efficacy and mass accessibility.

The investment follows a transformative 24 months for Tonic Health, experiencing 3x YOY growth for two years running. The company is now gearing up towards three new product launches and a major retailer launch being announced this September.

Beyond its retail presence, Tonic’s educational content has cultivated not just a brand, but a real health movement in the UK. Through its highly engaging and informative social media channels, the company has empowered millions of consumers to rethink their approach to daily wellness and to make more informed choices in the supermarket and beyond. Its content-first approach is central to its strategy of helping the public navigate an increasingly confusing food and health landscape.

The £2.8 million investment will be used to launch new products, expand retail footprint, and double down on Tonic’s content-first approach to consumer health. With increasing demand for effective, transparent health solutions, Tonic Health is poised to become a category leader not just in supplements, but in the wider nutrition and wellness landscape.

The UK’s nutritional health is in crisis. Ultra-processed foods have flooded our diets, and while they may be cheap and convenient, they are severely lacking in the nutrients our bodies need to function. At Tonic, we are addressing this with clinically backed, high-dose nutrition that is clean, affordable and accessible for both kids and adults at 45p a day. Everyone deserves better health, not just those who can afford luxury supplements priced at £2 per serving.
Sunna van Kampen, Founder
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