Medical protocol

Vitamin D 300,000 IU injection (IM)

English translation of content medically reviewed in Romanian by Dr. Claudiu Ruscu, intensive care physician (anaesthesia & intensive care)· Romanian text reviewed 20 September 2026

The high dose of injectable vitamin D, to correct a significant deficiency. Recommended after measuring your serum levels.

Read the medical guide first — when it is indicated, which tests it requires and how long it takes to see an effect.

Given exclusively at the clinic, not at home, and only after a medical assessment. See all prices.

250RON

Consultation included

Only after a medical assessment

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Active ingredients

Vitamin D 300,000 IU, injection

The dose is adjusted individually, based on the medical consultation. Every substance is pharmaceutical grade, given intravenously for higher bioavailability.

High-dose injectable vitamin D is a prescription medicine, not a supplement. It is given after a medical assessment, and the dose and repeat interval are set according to your serum 25-OH vitamin D level — testing beforehand is recommended. Vitamin D is fat-soluble and accumulates: a high dose given without an indication is not risk-free.

The SYNERVA method

STEP 01

Consultation

We assess your health and decide whether this protocol is right for you.

STEP 02

Preparation

You are seated comfortably. The IV cannula is placed and monitoring begins.

STEP 03

Administration

The infusion is given slowly, under medical monitoring, for optimal tolerability.

STEP 04

Monitoring

Afterwards you stay at the clinic for the observation period, under monitoring.

Indications

✓Vitamin D deficiency confirmed by measuring the serum level
✓A daily oral regimen that cannot be followed (poor adherence)
✓Malabsorption that limits oral intake
✓The need to correct a documented deficiency more quickly

For most people, daily oral supplementation is the first option and is enough. The high injectable dose is decided at the assessment, ideally starting from your serum 25-OH vitamin D level.

Contraindications

✕Hypercalcaemia or hypercalciuria
✕Kidney stones
✕Sarcoidosis and other granulomatous diseases
✕Hypersensitivity to vitamin D or to the components of the solution
✕Severe kidney failure

The full list of contraindications is discussed during the consultation.

Frequently asked questions

How is Vitamin D 300,000 IU given?

It is a high-dose intramuscular injection, given by medical staff — not a drip.

How often is the 300,000 IU dose given?

The high dose is given infrequently and only on the basis of your vitamin D level — ideally after a blood test. It is not repeated without an indication; too much vitamin D can be harmful.

How will I feel after the injection?

Mild, passing discomfort at the injection site. You can go back to your activities straight away.

Who should not have the 300,000 IU dose?

Contraindications include hypercalcaemia, kidney stones and other conditions. Measuring your vitamin D beforehand is recommended. It is checked at the medical consultation.

How much does the Vitamin D 300,000 IU injection cost?

250 RON, with the medical assessment included. Available at the clinic or at home in Bucharest and Ilfov, with transparent pricing.

English translation of answers medically reviewed in Romanian. They do not replace a consultation — indications and contraindications are decided individually, at the medical assessment.