Every October the same question lands in our pharmacy: "Do I really need to take vitamin D, or is it a bit of a scam?" Short answer: in the UK, yes — most of us actually do. Here's the honest, straightforward guide, minus the marketing fluff.
Why the UK is a vitamin D problem
Your body makes vitamin D when sunlight (specifically UVB) hits your skin. In the UK, the sun is only strong enough for that from roughly late March to late September — and even then, cloud, work, sunscreen and staying indoors block most of it. From October to March, your skin makes essentially none, no matter how many walks you take.
What the NHS actually says
The NHS recommends that everyone in the UK should consider a 10 microgram (400 IU) vitamin D supplement daily from October to March. Some groups need it year-round: people who cover most of their skin, those with darker skin tones, babies and young children, and adults who spend little time outdoors.
Signs your levels might be low
- Persistent tiredness that sleep doesn't fix
- Aches in bones or muscles, especially in winter
- Low mood in the darker months
- Getting colds more often than everyone around you
None of these are exclusive to vitamin D — they can have many causes. If you're concerned, a GP can arrange a blood test.
Choosing a supplement (don't overthink it)
- Standard daily dose: 10 micrograms (400 IU) is fine for most adults.
- Higher strength: some people (older adults, low levels confirmed by test) benefit from 25 micrograms (1000 IU). Our Vitamin D3 + K2 High Strength Capsules pair D3 with K2, which helps the body use the calcium D3 unlocks.
- D3 over D2: D3 (cholecalciferol) is the more effective form.
- Take with food that contains a little fat — it's a fat-soluble vitamin, so it absorbs better that way.
Can you take too much?
Yes — long-term intake above 100 micrograms (4000 IU) a day for adults can cause problems. Stick to the label. If your GP has recommended a specific dose after a blood test, follow that.
Kids and older family
Children aged 1-4 should have a daily supplement year-round. Babies under a year usually need one too (breastfed always, formula-fed only if under 500ml a day). Older adults benefit from year-round D too — bones and immunity both rely on it.
Order from your local pharmacy
Browse Anfield Pharmacy online for daily vitamin D and family supplements — fast UK delivery, free Click & Collect at 140 Oakfield Road, Liverpool. Unsure which strength suits you? Ask our pharmacist team.
Food supplements are not a substitute for a varied diet. Always read the label. If you take other medicines or have a medical condition, check with our pharmacist or GP.
