Magnesium & Vitamin B sachets in peach and passion fruit flavour help to strengthen the immune system. Magnesium helps to maintain nerve function, muscle and bone strength, support the immune system and prevent cardiac arrhythmia. It forms red blood cells, making them more efficient and making you feel less tired during exercise. They are also easy to take, as they have a peach and passion fruit flavour, come in sachets and can be taken without adding water. Gluten-free.