Daily maintenance
Your simple ritual to keep D3 levels steady all year — especially in Northern climates.
"Remarkably, with LYLsunD3 we were able to achieve healthy vitamin D levels in almost all patients within just five days"
prof. V. Pirags
Professor, Endocrinologist.
"Remarkably, with LYLsunD3 we were able to achieve healthy vitamin D levels in almost all patients within just five days"
prof. V. Pirags
Professor, Endocrinologist.
Over 650,000 sold
LYLsunD3 2000 | 4000 IU
Clinically Backed D3 Spray
Best Selling D3 Spray Since 2018¹
Clinically Proven Results
Clinically proven vitamin D3 spray for fast, predictable absorption. Powered by LYLmicro™ — an advanced microemulsion designed for sublingual uptake, delivering vitamin D3 directly into the bloodstream for reliable, efficient support.
RAPID, CLINICALLY PROVEN ABSORPTION
Increases vitamin D levels by up to 132% in 30 days — and up to 197% in people with low baseline levels.¹
GLOBALLY UNIQUE INNOVATION
One of the very few vitamin D3 sprays backed by 4 independent clinical studies, including research in older adults, people with overweight, and hospitalized patients.¹
FLEXIBLE 2000 | 4000 IU DOSING
One precise spray = 2000 IU — take 1 or 2 sprays/day based on your needs or your doctor’s recommendation.
Order now for delivery within 2-5 business days
How To Use
Shake before use. Always shake the bottle well before each spray to activate the LYLmicro™ microemulsion.
Dosage for children & adults
Children 3–11 years: 1 spray daily = 2000 IU (50 μg)
Adults and children 11+ years:
2 sprays daily = 4000 IU (100 μg)
How to take it
Spray under the tongue or onto the inside of the cheek for optimal sublingual absorption.Do not mix with food — let it absorb naturally through the oral mucosa.
How long it lasts
1 spray/day (2000 IU): up to 250 doses — approx. 8 months
2 sprays/day (4000 IU): 125 doses — approx. 4 months
Key Ingredients
Our Clinical Studies
Science-backed. Clinically validated. Globally unique.
1. Rapid 132% Increase in Serum D3 Levels¹Study: “Evaluation of Sublingual Vitamin D3 Microemulsion Absorption in Adults”
Summary: LYLmicro™ microemulsion increased 25(OH)D levels by 132% within 30 days, showing significantly faster absorption than oil drops or capsules.
2. 197% Improvement in Individuals With Deficiency¹Study: “Vitamin D3 Correction in Deficient Adults Using Microemulsion Delivery”
Summary: Participants with documented deficiency experienced a 197% rise in D3 levels over 30 days—far outperforming traditional oral formats.
3. Inflammation Reduction in Hospitalized COVID-19 Patients²Study: “Impact of Vitamin D Therapy on C-Reactive Protein, Ferritin, and IL-6 in Hospitalised COVID-19 Patients”
Summary: LYLsunD3 significantly improved inflammatory markers (CRP, ferritin, IL-6).
4. Proven Effective in High-Risk Groups¹Study: “Age- and Weight-Specific Absorption Efficiency of Sublingual Vitamin D3 Microemulsion”
Summary: 112% increase in people with overweight/obesity, 95% increase in adults aged 50+— showing superior absorption in groups that traditionally respond poorly to capsules or drops.
Why These Studies Matter
LYLsunD3 PROFESSIONAL is the only D3 spray in the world supported by 4 clinical trials covering:
✔ absorption speed
✔ deficiency correction
✔ inflammation reduction
✔ effectiveness across vulnerable groups
✔ validated sublingual delivery (LYLmicro™)
References
¹ Internal clinical data; summary available at: https://lyl-micro.com
² Sauša, S., Kistkins, S., Krūzmane, et al. Impact of Vitamin D Therapy on C-Reactive Protein, Ferritin, and IL-6 Levels in Hospitalised Covid-19 Patients.Proceedings of the Latvian Academy of Sciences. Section B., 2023.
You May Also Like
LYL F26 SPRAY™ iron boost
Clinically Proven High-Absorption Iron Spray
LYL premiumC™
High Performance Vitamin C
-
2000 IU PER SPRAY
-
UP TO 250 DOSES
-
4 CLINICAL STUDIES
-
FAST ABSORPTION
-
NATURAL ORIGIN VITAMIN D₃
-
GMP & ISO CERTIFIED
-
NON GMO FORMULA
-
GLUTEN & LACTOSE FREE
-
NO ARTIFICIAL SWEETENERS
-
TOOTH FRIENDLY XYLITOL
-
COST EFFECTIVE
What our customers are saying
Real stories from real users — from busy parents to professionals and seniors.
Best times to take LYLsunD3
For everyday vitality and when life limits your sun exposure.
Low sunlight seasons
Short days, office hours and long winters mean most adults don’t produce enough D3
naturally.
Indoor lifestyle
Working inside, spending little time outdoors, or using SPF daily reduces natural D3
synthesis.
Higher-need moments
Growth, aging, pregnancy, breastfeeding or increased body weight can raise your D3
requirements.
Recovery & immune support
When the body is under stress or recovering, optimal D3 levels help maintain normal
immune function.
This is a smarter daily vitamin D3
Performance you can see at a glance — clinically proven absorption, precision dosing, and clean formulation in every spray.
132%
Clinically proven increase
4 Clinical Studies
4 independent human trials
2000 IU per Spray
personalized daily support
For All Ages
Family-friendly: kids, teens, adults, seniors
Natural & Clean
No artificial sweeteners, no gluten, no lactose
Cost-effective
Lasts Up to 8 Months
Why thousands trust LYL
Not just another e-commerce brand.
In 10,000+ pharmacies
Recommended across Europe
Made in the EU only
GMP & ISO certified facilities
Fully traceable
From source to bottle
Partner with the best
IFF Howaru® · Aker Biomarine · AstaReal® etc.
See the difference at a glance
Built for real results — fast absorption, clinically proven efficacy, clean formula, protected delivery.
LYLsunD3 Professional™
Faster absorption with LYLmicro™
Clinically proven effectiveness
Known results
Precise, adjustable dosing
Tooth-friendly formula
GMP & ISO certified
No gluten, lactose, preservatives or GMOs
Typical vitamin D
Slow absorption — must pass through digestion
Little to no clinical evidence
Unpredictable bioavailability
Fixed dosing — less flexible for real needs
May contain sugar, artificial sweeteners or fillers
Standard oils prone to oxidation
Often not tested for purity or stability
Our Hermetically Sealed Microemulsion System: Fresh, Potent D3 — Every Time
1
Air Free, Oxidation Proof Formula
Our sealed spray bottle keeps the microemulsion protected from air, moisture and light, preventing oxidation and preserving full potency throughout the entire bottle.
2
Stable to the Last Drop
The hermetic pump design ensures the formula never degrades — every spray delivers the same clinically proven absorption and performance as day one.
3
Clean, Hygienic & Travel-Ready
No contamination risks. No exposure to air. Just a sterile, mess free spray system that fits effortlessly into your daily routine, at home or on the go.
Much easier than capsules
Quick spray and done each morning
Levels finally moving up
I struggled to raise my vitamin D, but this spray was easy to use and my blood results improved within a month.
We're serious about nutrition, ask away.
@actressagnesezeltina
@laura_valuta
@dianakubasova
@samantatina
¹ Recognition refers to confirmation of quality by the Latvian Gastroenterology Association, listed in the PVD dietary supplement registry.
¹ Sauša, S., Kistkins, S., Krūzmane, et al. Impact of Vitamin D Therapy on C-Reactive Protein, Ferritin, and IL-6 Levels in Hospitalised Covid-19 Patients. Proceedings of the Latvian Academy of Sciences. Section B, 77(3–4), 153–161 (2023).
¹ https://lyl-micro.com
LYLsunD3 2000 | 4000 IU
Clinically Backed D3 Spray
