Devit-3 is a sterile ampoule containing 300,000 IU/ml of Vitamin D3 (cholecalciferol). This high-dose vitamin D supplement is used to treat and prevent vitamin D deficiency under medical supervision. This is a prescription medication that comes as a single sterile ampoule for intramuscular injection. The high concentration of 300,000 IU/ml means it should only be administered by healthcare professionals. Vitamin D3 helps the body absorb calcium and phosphorus, which are essential for bone health. As this is a medical product, please consult your healthcare provider for proper dosage and administration instructions.