Rise · 2 min read
Vitamin D in the UK: why October matters
By the CYRCA team · Published · Updated
From October to March, the sun in the UK is not strong enough for your skin to make much vitamin D. That is why the NHS advises everyone to consider a daily vitamin D supplement during autumn and winter.
What the NHS says
The NHS suggests 10 µg (400 IU) a day for adults in autumn and winter, and all year for people who are indoors a lot or cover most of their skin outdoors. It also says adults should not take more than 100 µg (4,000 IU) a day.
Why Rise has 25 µg
Rise is designed to be taken every day of the year, by people who often work long hours indoors. We chose 25 µg (1,000 IU): enough to cover the NHS advice with room to spare, and comfortably below the 100 µg upper limit, even if you eat foods fortified with vitamin D. See the whole day against UK limits.
Do you need vitamin K2 with vitamin D?
Vitamin K contributes to the maintenance of normal bones, as does vitamin D. Pairing the two is now common practice. If you take anticoagulant medicine such as warfarin, speak to your doctor before taking any vitamin K supplement.
General information, not medical advice. Source: NHS: Vitamin D.