This powerful supplement features a high strength serving of Vitamin D3. This is known for its contribution towards the maintenance of the immune system, muscle function and healthy bones to reveal a healthier you. Benefits of Proto-col Vitamin D3: Easy to swallow tablets Helps support the immune system Optimal absorption The NHS recommends that all adults should be taking vitamin D supplements daily. This need is only exacerbated between October and early march due to the insufficient levels of sun exposure we receive during these months. Between March to the end of September, we are able to get the majority of vitamin D but when we truly need this boost in during the winter months. Proto-col Vitamin D3 helps maintain a healthier immune system and promotes optimal muscle and bone health. Each one of these tablets provides a 25µg/1000IU dose of vitamin D. During winter, you can even take up to 4 tablets per day to boost vitamin D levels. How to use: Take 1 to 4 tables daily. Do not exceed 4 tablets per day. Size: 120 tablets