Physician ReviewedTrichologist-Developed

Easy-to-take liquid drops for daily wellness support.

Five drops. — Five drops daily. — Take with a meal for best absorption.

89%

Recommend to Friends & Family After 6 Months¹

83%

Noticed Hair Regrowth After 6 Months¹

85%

Noticed a Reduction in Shedding After 6 Months¹

Target the Root Cause

Physician Reviewed – Trichologist Developed Highly Absorbable Liquid D3

Immune system function — Hormonal balance — Healthy hair growth cycles

Zone 2^TM

Vitamin D3

Name: Vitamin D3
Brand: Advanced Trichology
SKU: VITAMIN D3 5000IU
Price: 24.95 USD
Availability: InStock

Balancing cycles, boosting resilience

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18-Month Supply 3 bottles · Every 18 months SAVE 20% $59.88 · Free shipping $24.95 $19.96/bottle 1 bottle · Every 6 months SAVE 10% $22.46 $24.95 $22.46/bottle

Subtotal $74.85

Discount (20%) -$14.97

Shipping FREE SHIPPING

Total $59.88

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We recommend 3-6 months of consistent use to see results.

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Description

A high-bioavailability Vitamin D3 supplement that supports hair nutrition and the immune system. Helps restore healthy hair growth cycles, especially for those experiencing temporary hair shedding. In methylated form for long-term hair and skin health support.

Supplement Facts

Benefits

Helps Correct Vitamin D Deficiency

Helps replenish optimal levels to support long-term regrowth and overall hair health.

Supports Hormonal & Thyroid Health

Plays a key role in balancing androgens and supporting thyroid function for healthier hair cycles.

Encourages a Healthy Immune Response

Promotes immune balance and a favorable scalp environment to support hair retention.

Liquid Delivery for Better Absorption

One daily dropper delivers fast-acting, bioavailable support directly where your body needs it.

How to use

Take 5 drops daily under the tongue or as directed by your healthcare provider. For best results, use consistently for a minimum of 3-4 months.

Ingredients

Vitamin E Thiamine Riboflavin Niacin Vitamin A (Beta Carotene & Palmitate) Vitamin C (Ascorbic Acid) Vitamin D (Cholecalciferol) Vitamin B6 (Pyridoxal-5-Phosphate) Vitamin B12 (Methylcobalamin) Folate – 800 mcg Biotin Pantothenic Acid Iron Iodine Selenium Manganese PABA R-Lipoic Acid Institol OptiMSM® Fo-Ti Root Saw Palmetto Extract Pine Bark Extract Bamboo Extract L-Cysteine Hyaluronic Acid (from Sodium Hyaluronate) Choline Zinc (Zinc Gluconate)

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Vitamin D3

100% No-Risk. Within 90 Days. Money Back Guarantee.

As featured in:

Built for your zone

What we'd pair with this

Zone 2^TM

FoliGROWTH®

The ultimate hair growth formula. A patented, all-natural supplement targeting nutritional gaps and supporting thyroid and adrenal function.

Zone 2^TM

HairStem™

Topical hair growth serum for direct scalp application. Works synergistically with Vitamin D3 to support follicle health from the outside in.

Hormonal Hair Loss

Explore Zone 1™

Nutritional Hair Loss

Explore Zone 2™

Not sure if this
product is right for you?

Take Zone Hair Pull Test™

What to expect

Your growth timeline.
Here's what happens.

Day 1–30

Day 31–60

Day 61–90

The foundation Vitamin D levels begin to rise. Shedding starts to slow.

The shift Shedding reduces significantly. Hair feels stronger through the growth cycle.

The result Less shedding and the first signs of new growth. 83% noticed hair regrowth at six months.¹

Individual results will vary based on multiple factors, including but not limited individual biology, consistency and duration of use, and the severity and cause of hair loss.

Understanding The Science

Low vitamin D hides in plain sight.
Vitamin D3 helps close the gap.

Hair loss isn't random — it maps to specific zones on the scalp, each with a distinct root cause. Vitamin D3 is formulated to target Zone 2, where nutritional deficiencies silently starve follicles and trigger excessive shedding.

Zone 1^TM

Hormonal Hair Loss DHT is quietly shrinking your follicles.

Zone 2^TM

Nutritional Hair Loss Your follicles are starving for nutrients.

Zone 3^TM

Inflammatory Hair Loss Scalp irritation blocks the growth cycle.

Zone 1™ · Hormonal

Your follicles are
shrinking. And you don't know it.

Testosterone can convert into DHT, which can bind to susceptible hair follicles and gradually shorten the growth cycle — leading to finer, weaker strands and visible thinning, especially at the temples and crown.

83% Reported and noticed hair regrowth.¹

Zone 2™ · Nutritional

Your follicles are
starving. And you don't know it.

Deficiencies in key vitamins, minerals, and nutrients can disrupt the hair growth cycle, leading to increased shedding, diffuse thinning, and weaker growth. Correcting these nutritional gaps helps create the foundation follicles need to grow normally.

85% Reported a reduction in shedding.¹

Zone 3™ · Inflammatory

Your follicles are
irritated. And you don't know it.

When the scalp becomes irritated — from stress, immune responses, or product buildup — blood flow to follicles is restricted and the growth cycle breaks down. Calming botanicals and targeted nutrients help restore a healthy scalp environment where hair can grow.

89% Recommended to family and friends.¹

Not sure if this product is right for you?

Take the Zone Hair Loss Test

Real results.
Don't take our word for it.

Real before-and-afters from real Vitamin D3 users — at 60, 90 and 180 days. No filters. No retouching.

“Hair loss is stressful, scary, and heartbreaking so I wanted to provide an early review so others, like myself, can have a bit of a sigh of relief. I’m happy with my experience.

Regrowth Visible 180-Day Journey Denser Roots

Regrowth Visible

New strands coming in where hair had stopped growing.

180-Day Journey

tayed consistent and the results were worth every day.

Denser Roots

Hair growing back fuller and stronger from the root up.

“I had tried everything and given up when I found Advanced Trichology. At first I thought nothing was happening, but I stuck to the plan and my hair actually grew back!”

Regrowth Visible 180-Day Journey Denser Roots

Regrowth Visible

New strands coming in where hair had stopped growing.

180-Day Journey

Stayed consistent and the results were worth every day.

Denser Roots

Hair growing back fuller and stronger from the root up.

“My confidence took a hit when my hair started thinning, but sticking with the plan changed everything. My scalp isn’t showing anymore, and my hair looks strong and full.”

Regrowth Visible 180-Day Journey Denser Roots

Regrowth Visible

New strands coming in where hair had stopped growing.

180-Day Journey

Stayed consistent and the results were worth every day.

Denser Roots

Hair growing back fuller and stronger from the root up.

“I was losing confidence along with my hair, but after a few months on the Advanced Trichology routine, I started seeing new growth. My before-and-after photos still surprise me.”

Regrowth Visible 180-Day Journey Denser Roots

Regrowth Visible

New strands coming in where hair had stopped growing.

180-Day Journey

Stayed consistent and the results were worth every day.

Denser Roots

Hair growing back fuller and stronger from the root up.

Customer Reviews

Overall rating: 4.7 / 5 from 6073 reviews.

I would recommend this for the rest of my life. The best vitamin product for hair.

Zachary C. 5/5 Verified October 6, 2026

FoliGROWTH®

I've used this product for getting my hair back in shape and keeping it that way! Great product..

Kim P. 5/5 September 29, 2026

FoliGROWTH®

It works!

Suzanne A. 5/5 Verified September 19, 2026

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Vitamin D3

Select your plan Pause or cancel anytime

Description

Supplement Facts

Benefits

How to use

Ingredients

Vitamin D3

What we'd pair with this

FoliGROWTH®

HairStem™

Hormonal Hair Loss

Nutritional Hair Loss

Your growth timeline.Here's what happens.

Low vitamin D hides in plain sight.Vitamin D3 helps close the gap.

Your follicles areshrinking. And you don't know it.

Your follicles arestarving. And you don't know it.

Your follicles areirritated. And you don't know it.

Real results. Don't take our word for it.

Customer Reviews

Everything your hair needs.Nothing it doesn't.

The nutrients your follicles have been asking for.

Quick Start Bundles

Real results.Don't take our word for it.

20 years of research. One formula that works.

The science, simplified.

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Your growth timeline.
Here's what happens.

Low vitamin D hides in plain sight.
Vitamin D3 helps close the gap.

Your follicles are
shrinking. And you don't know it.

Your follicles are
starving. And you don't know it.

Your follicles are
irritated. And you don't know it.

Real results.
Don't take our word for it.

Everything your hair needs.
Nothing it doesn't.

The nutrients your follicles
have been asking for.

Real results.
Don't take our word for it.

20 years of research.
One formula that works.