Vidal Vitamin D3 1000 IU is a pharmaceutical-grade dietary supplement providing cholecalciferol, the naturally occurring form of Vitamin D synthesized by the human body upon exposure to solar ultraviolet B (UVB) radiation. Each capsule contains 1000 International Units (IU) of Vitamin D3, formulated to assist in the maintenance of serum 25-hydroxyvitamin D concentrations. This supplement is indicated for individuals requiring clinical support for calcium homeostasis, skeletal health maintenance, and immune system function.
Key Medical Benefits & Value
1. Regulation of Calcium and Phosphorus Homeostasis
Vitamin D3 is essential for the active absorption of dietary calcium and phosphorus within the small intestine. By facilitating the expression of calcium-binding proteins, this supplement supports the mineralization of the bone matrix, which is vital for preventing osteomalacia and supporting skeletal structural integrity.
2. Skeletal Health and Bone Remodeling
Adequate Vitamin D status is a prerequisite for the bone remodeling process. It functions as a key regulator in the skeletal system, helping to prevent age-related bone density decline and supporting the maintenance of bone mineral density (BMD) throughout the life cycle.
3. Immune System Modulation
Beyond skeletal health, cholecalciferol plays a functional role in the modulation of the innate and adaptive immune responses. Vitamin D receptors are distributed across various immune cells, including monocytes, macrophages, and dendritic cells, suggesting a role in the regulation of systemic inflammatory responses.
Ingredients & Mechanism of Action
Formulation Profile
Vidal Vitamin D3 1000 IU is formulated for optimal intestinal absorption. As a fat-soluble vitamin, cholecalciferol requires dietary lipids for efficient uptake into the lymphatic system.
Mechanism of Action:
Systemic Conversion: Following ingestion, cholecalciferol is transported to the liver, where it is hydroxylated to 25-hydroxyvitamin D [25(OH)D], the primary circulating form of the vitamin. It is then converted in the kidneys to its biologically active form, calcitriol.
Receptor Binding: Calcitriol binds to the Vitamin D receptor (VDR), facilitating the transcription of genes responsible for calcium metabolism, cell differentiation, and immune regulation.
Safety and Quality: The formulation is produced under stringent quality control standards, ensuring the absence of unnecessary contaminants, stabilizers, or synthetic binders that could interfere with the bioavailability of the active ingredient.
Usage Instructions & Safety Precautions
Clinical Administration Guidelines
Dosage: The standard dosage is one (1) capsule daily, or as directed by a healthcare professional based on individual serum 25-hydroxyvitamin D laboratory assessments.
Administration: For enhanced bioavailability, ingest the capsule with a meal containing fat, as Vitamin D3 is a fat-soluble compound.
Safety Precautions and Monitoring
Hypercalcemia Risk: Excessive intake of Vitamin D can lead to hypercalcemia (abnormally high blood calcium levels). Patients should adhere to prescribed dosages to avoid toxicity.
Drug Interactions: Vitamin D may interact with certain medications, including corticosteroids, cardiac glycosides (digoxin), and specific diuretic agents. Patients currently under therapeutic regimens should consult a physician prior to initiation.
Pre-existing Conditions: Individuals with hyperparathyroidism, renal impairment, or granulomatous diseases should exercise caution and seek medical consultation before beginning supplementation.
Storage: Store the container in a cool, dry place, maintained between 15°C and 25°C. Protect from direct light, humidity, and excessive thermal exposure. Ensure the container remains out of reach of pediatric populations.
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