By team Briyo Supplements · Updated August 2026
India gets sunshine most of the year. So it surprises almost everyone to learn that vitamin D deficiency here is among the highest in the world - urban studies routinely find that 70 to 90 percent of people tested have levels below the healthy range.
A sunny country, chronically short of the sunshine vitamin. How?
The indoor-life problem
Vitamin D is unusual - your skin manufactures it when direct sunlight hits it. Food contributes very little; even a good diet covers only a fraction of the requirement. Which means your vitamin D status is mostly a function of how much bare skin meets how much midday sun.
Now look honestly at a modern Indian day. We commute in closed vehicles, work under office lighting, and when we do step out, we're covered up or in the shade - sensibly, given the heat. Melanin adds another layer: darker skin is better protected from UV, which also means it needs meaningfully longer sun exposure to make the same vitamin D. Add pollution haze in the big cities filtering UVB, and the sunny-country paradox stops being a paradox at all.
The sun is there. Our lifestyles just never let it reach us.
What vitamin D does, and what running low feels like
Vitamin D's headline job is helping your body absorb calcium - it's central to bone strength. It also contributes to normal muscle function and supports the immune system.
Running low, like most vitamin shortfalls, feels like nothing in particular: tiredness, aches in bones and lower back, muscle heaviness, frequent minor illnesses, low mood in some people. Vague enough to ignore for years - which is exactly what most people do. A simple 25(OH)D blood test tells you where you stand, and it's one of the most worthwhile tests you can ask for at a routine checkup.
Sunlight vs supplement: the honest comparison
Can you fix it with sunlight alone? In theory, yes - about 20-30 minutes of midday sun on bare arms a few times a week, more for darker skin. In practice, be realistic about whether that will actually happen through an Indian summer, a monsoon, a desk job and a daily routine. For most urban adults it doesn't, which is why the deficiency numbers look the way they do.
This is one of those cases where a supplement isn't the lazy option - it's the reliable one. Vitamin D3 (cholecalciferol) is the same form your skin makes, it's inexpensive, and one small capsule a day quietly does what your schedule won't.
Choosing a dose: 400, 1000 or 2000 IU?
Rough, practical guidance - your doctor's advice and your test result always come first:
- 400 IU - a maintenance dose, suited to children (paediatrician's call) or adults with decent sun exposure who just want a top-up. Vitamin D3 400 IU
- 1000 IU - the everyday middle ground for adults with typical indoor routines. Vitamin D3 1000 IU
- 2000 IU - the common choice for adults who tested low, get minimal sun, or whose doctor recommended a stronger daily dose. Vitamin D3 2000 IU, also available as grape-flavoured chewables if capsules aren't your thing.
Two tips that improve results regardless of dose: take D3 with a meal that contains some fat (it's fat-soluble - absorption improves noticeably), and be consistent. Levels rebuild over weeks, not days.
If you've been prescribed the weekly 60,000 IU sachets for a diagnosed deficiency, finish that course as directed - a daily D3 is what comes after, to stop levels sliding back down. Ask your doctor about the handover.
FAQ
How much vitamin D do I need daily? General adult guidance in India sits around 600 IU as a baseline. A blood test plus your doctor's advice beats any rule of thumb.
Can I get enough vitamin D from sunlight in India? Physically yes - practically, most urban adults don't. It needs regular midday sun on bare skin, and darker skin needs longer exposure. Office hours, cover-ups and city pollution mean most of us fall short year-round.
What's the difference between D3 and D2? D3 (cholecalciferol) is the form your skin makes. If you're choosing a supplement, choose D3.
When should I take vitamin D3? Any time of day works - with a meal containing some fat is the one detail that matters. Many people pair it with lunch.
Can I take too much? Toxicity is associated with very high intakes sustained over long periods, usually from misusing high-dose prescriptions. Stick to the label, and retest levels after three months or so.
Do vitamin D and calcium need each other? They're partners - vitamin D is how your body absorbs calcium properly. For bone-focused support, some prefer a combined formula like OrthoMax D3 + K2 + Calcium.
Briyo products are food supplements and are not intended to diagnose, treat, cure, or prevent any disease. Consult a healthcare professional before use if you have a medical condition or are taking medication.