im not really sure how to check or know, but what i do know is that i took a blood test recently and my rating for vitamin D came back excellent. I would encourage you to watch the youtube videos on vitamin D by Dr John Campbell. I actually double dose on these (8000IU) because of the new studies that are coming out thick and fast. Hope this helps.

Vitamin D3 4000IU | 400 Tablets | 1+ Year Supply | 6mm Micro Vitamin D Tablets | Easy to Swallow VIT D | One A Day Supplement | Made in The UK | Magnesium Stearate-Free | Vegetarian Friendly

Vitamin D3 4000IU | 400 Tablets | 1+ Year Supply | 6mm Micro Vitamin D Tablets | Easy to Swallow VIT D | One A Day Supplement | Made in The UK | Magnesium Stearate-Free | Vegetarian Friendly

Q: Strength too high? 19-70 yr olds recommended only 600 iu daily? so why so strong???

You can take much higher dose each day without doing any harm i have been taking 4000 iu for three years.

Product ID: 201210384

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Details

Brand
WeightWorld
Item form
Tablet
Primary supplement type
Vitamin D3
Diet type
Vegetarian
Flavour
Unflavoured

🌱Vegetarian & additive-free

📅400 tablets = 14+ months supply

☀️4000IU potent daily dose

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Description

☀️ Elevate your daily glow with the ultimate Vitamin D3 power boost!

CLEAN GREEN FORMULA - Magnesium stearate-free, vegetarian-friendly, and free from GMOs and harmful additives for pure health.
POWER PACKED DAILY DOSE - Each tablet delivers a potent 4000IU of bioavailable Vitamin D3 to keep you energized and balanced.
TRUSTED BRITISH QUALITY - Crafted in the UK under GMP standards by a family business with 18+ years of supplement expertise.
YEAR LONG WELLNESS SUPPLY - 400 easy-to-swallow micro 6mm tablets provide over 14 months of uninterrupted immune and bone support.
MULTI FUNCTION VITALITY BOOSTER - Supports normal bones, muscles, teeth, calcium levels, and immune system function — all in one daily tablet.

Vitamin D3 4000IU tablets offer a high-potency, bioavailable daily dose designed to support bone, muscle, teeth, calcium balance, and immune health. With 400 micro 6mm tablets per bottle, this vegetarian-friendly, magnesium stearate-free supplement provides a convenient 14+ month supply. Made in the UK under strict GMP standards by a trusted family brand, it’s the smart choice for professionals seeking long-term wellness without compromise.

Specifications

Additives	Contains anti-caking agents
Weight	110 g
Units	400 Count
Serving Recommendation	1 tablet every day
Brand	WeightWorld
Format	Tablet
Age Range Description	Adult

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Strength too high? 19-70 yr olds recommended only 600 iu daily? so why so strong???

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