Βιταμίνη D3: Τι να πάρεις, γιατί, πότε και πώς!

Vitamin D3: What to take, why, when and how!

The ultimate guide to not wasting money – and seeing a difference


🔥 TL;DR (Why no one reads anymore)

  • D3 Without it: you get tired, your defenses drop, testosterone is not produced, you don't absorb calcium.

  • Most Greeks are deficient. Yes, even if you sunbathe – it's not enough.

  • The right D3 is in drops or softgels, not tablets.

  • Always with fatty food for absorption.

  • Combine it with K2 to keep calcium from going into the arteries.


📍 Step by Step: Which one to choose?

1. 📊 Take exams

Zeta: 25(OH)D

  • <20 ng/ml → Deficiency

  • 20–30 ng/ml → Deficiency

  • 30–50 ng/ml → OK

  • 50–70 ng/ml → Excellent

➡ If you are under 30: Take a supplement NOW.


2. 💊 Choose format

  • Liquid form (drops) → faster absorption, perfect for children & the elderly

  • Softgel (capsule with oil) → ideal for daily use

  • Tablets → avoid them, they are cheap and not well absorbed


3. 🧠 What dosage to take?

Level D3 dose / day
Maintenance 1000–2000 IU
Mild deficiency 3000–4000 IU
Severe shortage 5000–8000 IU (only with a doctor)

📌 Don't take it all at once. Take it with food – fatty food.


4. 🧬 Combinations that make a difference

D3 + K2 (MK-7)
K2 drives calcium into the bones and away from the arteries. You don't want it going there.

D3 + Magnesium
If you don't have magnesium, D3 doesn't activate. It's like having a key without a door.


5. 📅 When to take it?

🌞 Morning or noon. Not evening – it affects your melatonin.
🍽 Always with food that contains fat (olive oil, avocado, egg).


💣 What to AVOID

❌ D2 (ergocalciferol) – outdated, weak form
❌ Supplements without K2
❌ Supplements with “rosemary” and “superfoods” – marketing


🧲 What should the label show?

  • ✅ "Vitamin D3 (cholecalciferol)"

  • ✅ "1000–5000 IU per dose"

  • ✅ "With olive oil or MCT oil"

  • ✅ "With K2 MK-7 (at least 90μg)"

  • ✅ "Sugar-free, lactose-free, color-free"


🔍 Why isn't your D3 working, even if you're taking it?

  1. You take it without food.

  2. You don't have K2 and magnesium.

  3. You take it at night.

  4. You're taking the wrong form.

  5. Do you drink alcohol or have bowel problems?

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