8 Week Immunity Challenge

Tonic Health & Thriva have teamed up to help you track and optimise your immune health. 

Find out how good your immune health really is by checking your vitamin D and inflammation markers (C-reactive protein or CRP) at the beginning of the challenge and at the end of the 8 weeks. Take Tonic every day, and follow the tips in the 8-week plan to see the difference a few small changes could make to your immune health.

Bundle includes: 

2 x Thriva immune health finger prick testing kits (Vitamin D and CRP Test) 

8 x Weeks’ supply of Tonic high dose vitamin drinks 

1x Weekly food, exercise and lifestyle plan developed by leading experts to help you on your journey to better immune health. 

Save 23% | RRP £114 

The Nutritional Fine Print

You'll only find the clean ingredients, plants and high dose vitamins and minerals inside Tonic. Tonic is always vegetarian and we have vegan friendly products too.

Tonic Health

  • Science backed high dose
  • All natural & vegan
  • Powerful plants
  • No added sugar
  • High liquid absorption

Other Supplements

  • Ineffective low dose
  • Contains chemicals and fillers
  • Low quality ingredients
  • Added sugar or artificial sweeteners
  • Low pill absorption

Immune health

By absorbing more of what you need

To make sure you’re getting the full benefit we make our vitamins into drinks, as liquid form leads to up to 98% absorption, compared to a measly 20-30% in tablets. Vitamin drinks also allow us to pack in over 300mg of powerful plants not only for their unique benefits but also as a co-factor for absorption in the body.



Dr Gemma Newman

Good nutrition plays a key role in keeping us fit and healthy, but getting the right levels of vitamins, minerals and plants can be difficult when we live such busy lifestyles. Tonic combines the latest science on vitamin dose with some of the most powerful plants available to create the perfect all in one multivitamin drink.

Sunna - Our Founder

After getting at least three to four colds every year I decided enough was enough. I spent 5 years studying thousands of scientific papers, talking to immunologists, leading doctors and functional medicine practitioners to come up with a tonic that does just the job to help.

Emma - Nutritionist

I have always believed in the power of the human body and wanted to help people reach their full health potential. That's why I joined the Tonic team because their drinks are packed with the highest dose of vitamins, minerals and plants to help people harness the power of their immune system.