
"Vitamin D deficiency is pandemic due to the fact that most humans have depended on sun for their vitamin D requirement"
Michael F. Holick
MD, PhD, Professor of Medicine & Vitamin D researcher







"Vitamin D deficiency is pandemic due to the fact that most humans have depended on sun for their vitamin D requirement"
Michael F. Holick
MD, PhD, Professor of Medicine & Vitamin D researcher
Third party verified - convenient and safe

LYLsunD3 ProCaps 4000 IU
High Potency Vitamin D3 Capsules
Third Party Verified
Easy to Swallow Small Capsule
Clinically trusted, third-party verified D3 for stable, long-lasting vitamin levels. Small capsule. High potency. Pure, predictable absorption — every single time.

HIGH POTENCY 4000 IU D3
Clinically trusted strength for adults and teens (11+).

NATURAL D3 FROM LANOLIN
Identical to the form your body makes from sunlight.

OPTIMIZED FOR ABSORPTION
D3 dissolved in purified flaxseed oil for superior uptake.

Order now for delivery within 2-5 business days










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What our customers are saying
Science meets everyday life. These are the voices behind LYLBIOTIC.

Best times to take LYLsunD3 ProCaps
For daily vitality, strong bones, and stable year round vitamin D levels.
Increased daily needs
Age 50+
All year maintenance
This is a smarter daily vitamin D
Reliable absorption, proven potency, and pharmacy-grade quality — all in one clean daily capsule.

4000 IU
EFSA-compliant daily potency

Natural D3
Lanolin derived cholecalciferol

Enhanced Absorption
D3 in purified flaxseed oil

Zero Additives
No colors, gluten, lactose, GMOs

GMP & ISO
Pharmacy-grade EU manufacturing

Cost Effective
60 days per package
Why thousands trust LYL
Not just another e-commerce brand.
See the difference at a glance
High-purity natural D3. Pharmacy-grade quality. Independently verified for purity and potency.
LYLsunD3 ProCaps™
4000 IU EFSA-approved daily strength
Natural cholecalciferol identical to sunlight-produced D3
Purified flaxseed oil for optimized absorption
Independently tested for purity & dose accuracy (GBA Group)
GMP & ISO certified production
Available online and in pharmacies
Typical D3 Capsule
Lower or inconsistent D3 potency
Synthetic or mixed-source ingredients
Generic oil carriers with unknown absorption
No independent third-party quality testing
Produced without GMP/ISO traceability
Online-only, lacks pharmacy-grade trust
Our Blister Sealed Delivery System. Protected Potency, Every Time
Shielded From Air, Moisture & Light
High-barrier blisters protect each capsule from oxidation — no potency loss with every bottle opening.
Full Strength Until the Last Capsule
Unit dose sealing ensures every capsule delivers the exact 4000 IU — stable, fresh and clinically reliable.
Clean, Hygienic & Travel-Ready
Individually sealed capsules stay protected from contamination — easy to carry, easy to trust, anywhere you go.
Small, smooth capsule
Easy to swallow and no issues
Finally raised my vitamin D levels
I’ve taken vitamin D for years, but this is the first one I’ve stayed consistent with because the capsule is small and the results are really good.
We're serious about nutrition, ask away.

¹ Sales leadership data — Latvian pharmacy market 2017–2024.
² Comparison based on the average CFU content of typical probiotic supplements on the European market (up to 2 billion CFUs per capsule).

LYLsunD3 2000 | 4000 IU
High Potency Vitamin D3 Capsules



















