Vitamin D3 1000IU
Bone & immune support
What does optimal health cost per day?
Less than a coffee top-up. Optimal nutrition for 17p/day — the most cost-effective investment in your health.
Free Vitamin C 1000mg with orders over £40
While stocks last · auto-added at checkout
Supply size
Most customers reorder this monthly. Each pack lasts ~30 days.
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Your daily health investment
£0.33
per day
£2.31
per week
£9.99
per month
Less than a daily coffee — for daily nutritional support from Vitamin D3.
Auto-delivered. No minimum term. Cancel any time.
Price locked forever — we never raise your subscription price. Cancel any time, no fees.
Bundle and save up to 20%
Add 2+ products to your stack — discount applied automatically at checkout.
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Only £2.99 — credited toward your first full order
Group buy — save up to 30%
Limited spotsPool orders with other Vitamin buyers. The more people join, the more everyone saves. Next group buy runs when we hit 50 registrations.
📦 What to expect when it arrives
Premium box
Double-sealed. No cheap poly bags — every Medibro order ships in a quality box.
Amber glass
UV-protective amber glass preserves potency. Satisfying click-lid seal.
Little extras
Every first order includes a usage guide and a surprise freebie — see what you get.
Start today
Take your first dose the day it arrives — don't wait for a 'perfect moment'.
Your 30-day journey starts today
Future you will look back on this moment.
Based on typical customer reports. Individual results vary. Backed by our 30-day guarantee.
Premium packaging, inside and out
Amber glass jar
Blocks UV degradation, no plastic leaching
100% recyclable
Jar, cap, and box are fully kerbside recyclable
No artificial fillers
No magnesium stearate, silicon dioxide, or titanium dioxide
- Free UK delivery over £35
- 14-day hassle-free returns
- Secure checkout, audit-logged
- Manually compliance-reviewed
Order dispatched, tracking info sent. Most customers take their first dose the day it arrives.
Research shows it takes ~14 days to anchor a new habit. By now, most customers have found their ideal time of day.
At 8 weeks, customers report the strongest improvements. Consistency is everything with nutritional supplements.
Over 90% of Medibro subscribers are still on the same product at 3 months — the clearest signal a supplement is working.
Seasonally relevant now
June: Stay active season — magnesium for recovery and energy
Benefits
- ✓Supports overall well-being and vitality
- ✓Contributes to the maintenance of healthy bones
- ✓Aids in the normal functioning of the immune system
- ✓Promotes mood balance and emotional well-being
- ✓Convenient daily dosage for easy supplementation
Dosing Guide
How to take Vitamin D3 1000IU
**Usage Directions for Vitamin D3 1000IU** **When to Take:** You can take Vitamin D3 at any time of the day. Many people prefer to take it in the morning with breakfast or during a meal to help with absorption. **How to Take:** Swallow one tablet with a glass of water. Make sure to follow the dosage instructions on the label, and do not exceed the recommended amount unless advised by a healthcare professional. **With Food:** It’s best to take Vitamin D3 with a meal that contains some fat, as this helps your body absorb the vitamin more effectively. You might consider having it with foods like eggs, dairy, or avocados. **Important Note:** This supplement is not a substitute for a varied diet. It’s important to eat a balanced diet rich in fruits, vegetables, whole grains, and proteins to ensure you get all the nutrients your body needs.
Always read the label. Consult a healthcare professional if you have any medical conditions or take prescription medication.
Quality & transparency
Why form matters
Medibro uses
D3 + K2 (MK-7 form)
Long-acting MK-7
Others often use
D3 alone or K2 as MK-4
Lower bioavailability
MK-7 has a 72-hour half-life vs. MK-4's 1-hour — meaning it's active in your system all week.
K2 directs calcium to bones rather than arteries. Without K2, high-dose D3 can lead to soft-tissue calcium deposits. MK-7 is the clinically preferred form.
How we compare
Medibro vs. typical high-street / marketplace alternatives
| Feature | Medibro | Others |
|---|---|---|
| Form | D3 + K2 (MK-7) | D3 alone |
| IU per capsule | 4000 IU | 1000 IU |
| K2 for calcium routing | ||
| Olive oil base (fat-soluble) | ||
| Third-party tested | ||
| 30-day guarantee |
NHS recommends vitamin D supplementation
The NHS advises everyone in the UK to consider taking 10mcg vitamin D daily, especially from October to March when sunlight is insufficient.
Source: NHS.uk — Vitamin D
Vitamin D3 is more effective with:
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Your personalised stack
Recommended to pair with Vitamin D3
What to expect over time
Blood serum vitamin D starts climbing. Most people don't notice changes yet — this is normal.
Serotonin synthesis improves with adequate D3. Many users notice improved mood and reduced fatigue.
T-cell activation is D3-dependent. Cold and flu resilience measurably improves.
Bone density, cardiovascular and cognitive benefits accumulate. Annual blood test should show 75–200 nmol/L.
What to expect
A realistic week-by-week guide for first-time users
Blood levels starting to rise. You won't feel anything yet but the deficit is closing.
Serotonin regulation improves as D3 levels normalise. Mood often brightens noticeably.
Full immune priming and bone-density support established. Carry on through winter.
Continued daily use keeps blood levels optimal. Do not stop mid-winter.
Individual results vary. Consistency is key — don't assess before week 6.
Clinical evidence
Peer-reviewed research⏰ How to take for best results
Best time
Morning, with breakfast
Take with
Fat-containing meal — D3 is fat-soluble
Avoid with
Calcium supplements at same time (separate by 4 hours)
K2 (included) directs calcium to bones, not arteries. Essential when taking high-dose D3.
Personalised dose calculator
For guidance only. Consult your pharmacist or GP if you take prescription medication.
Frequently asked questions
Pairs perfectly with
15% off when bought togetherOmega-3 High Strength
Fat-soluble booster
Vitamin D3 is fat-soluble — taking with omega-3 can improve absorption by up to 50%
Bundle total: £34.98 → £29.73
Find your perfect supplement stack
Answer 4 quick questions and get a personalised stack built around your goals, health history, and lifestyle.
Medibro Quality Score™
Independent assessmentPurity
97
Overall
out of 100
Potency
Value
How we compare
Medibro | Budget | Pharmacy | |
|---|---|---|---|
3rd-party COA testing | |||
Premium forms (glycinate, KSM-66, TG omega) | |||
Full ingredient transparency | |||
UK pharmacist reviewed | |||
No proprietary blends | |||
30-day money-back guarantee | |||
Eco-friendly packaging |
Comparison reflects general market observations. Specific brands may vary.
What outcomes matter most to you?
🌍 Ingredient sourcing
Cholecalciferol (D3)
Norway
Lichen-derived, vegan-certified
Menaquinone-7 (K2)
Japan
MK-7 from natto fermentation
UK deficiency data
1 in 5 UK adults are vitamin D deficient — rising to 1 in 3 in winter months
Source: NHS / SACN 2016
Common symptoms
Higher risk if
This information is educational. Always consult your GP before supplementing if you have a health condition.
Founded by a UK pharmacist
“After 12 years dispensing prescriptions, I was frustrated by the gap between expensive supplements and what the evidence actually supports. Medibro was built to source properly — clinical doses, verified purity, fair prices.”
— MPharm, GPhC registered · Medibro founder
Every formula is reviewed by our in-house pharmacy team before launch.
Supplement Interactions
What can I safely combine this with?
K2 directs calcium (mobilised by Vitamin D) to bones and away from arteries. D3+K2 is the gold standard combination.
View Vitamin K2 →Magnesium activates Vitamin D. Most people are deficient in both — supplementing together dramatically improves Vitamin D efficacy.
Omega-3 enhances Vitamin D receptor sensitivity, making the same dose of D3 more effective.
⚕️ Always consult a healthcare professional before combining supplements with medication.
Stack Synergies
Science-backed pairings for better results
Required to activate Vitamin D — without it, up to 50% of D3 stays inactive in the body
Directs calcium deposited by D3 to bones rather than arteries — essential pairing
Fat-soluble co-absorption; omega-3 enhances D3 bioavailability and anti-inflammatory action
Synergies based on published nutritional science. Individual results may vary. Always consult a healthcare professional before combining supplements.
Complete your stack
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