Vitamin D3 & K2

How to choose a vitamin D3 and K2 supplement

Compare the vitamin D3 strength, shown in IU or micrograms (1000 IU is 25mcg), and the amount and form of K2, most often MK-7 in micrograms. Popular strengths are 1000 IU, 2000 IU and 4000 IU of D3. Oral sprays and drops suit people who prefer not to swallow capsules, and some formulas add magnesium, calcium or omega-3.

MK-7 or MK-4?

These are two forms of vitamin K2. Most combination products use MK-7; the label tells you which form is included.

Always read the label and speak to your GP if you take medication, are pregnant or have a medical condition.