The Zinzino Vitamin D Test takes away the guesswork. It’s a simple at-home finger-prick blood test that shows you exactly where your levels are right now and whether you might need extra support.

Xtend and Xtend+ are designed to support energy, immunity, bones, muscles, connective tissue, skin, metabolism and long-term cellular health. They are the perfect everyday companions to BalanceOil+ and ZinoBiotic+, forming the complete “inside-out wellness system” I recommend to clients. Here’s a full breakdown of what each version does and how to choose between them.

Vitamin D is one of the most important nutrients for human health, yet around 1 billion people worldwide are deficient, and in the UK, this rises dramatically during autumn and winter. Sunlight, lifestyle, hormones, weight, genetics, work patterns and even pollution all determine how much vitamin D our body can make.