Osteovile

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Medically reviewed

Laura Arias

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Osteovile

Property Description
Active ingredient Alfacalcidol (1-alpha-hydroxyvitamin D3)
Form Soft capsules, Oral drops, Injection solution
Pharmacological class Vitamin D Analogue / VDR Activator
General purpose Management of Calcium and Phosphate Balance
Origin Synthetic Analogue

What Type of Medicine is Osteovile?

Osteovile is a specialized prescription-only medication classified as a Vitamin D analogue, containing the single active ingredient Alfacalcidol. This drug is a synthetic analogue of the naturally occurring Vitamin D hormone, Cholecalciferol, and is classified under the Anatomical Therapeutic Chemical (ATC) code A11CC03 for Vitamin D and analogues. Its defining feature lies in its role as a prodrug that is rapidly metabolized in the liver to the active form, Calcitriol. This process effectively bypasses the final hydroxylation step normally carried out by the kidneys. This unique mechanism makes the drug a recognized choice for managing systemic mineral imbalance that arises specifically from impaired renal function.

The Composition and Form of Alfacalcidol

The active ingredient in Osteovile is Alfacalcidol, which is primarily formulated as a single-ingredient product designed for systemic administration. This drug is known for being available in forms suited for diverse patient populations, including soft capsules and oral drops, where the Alfacalcidol is typically suspended in an oily liquid base. Furthermore, a solution is available for intravenous injection, offering a direct route of administration utilized in specific clinical settings. These various systemic forms ensure consistent delivery of the Alfacalcidol for continuous therapeutic management.

How Osteovile Supports Bone and Mineral Balance

The general purpose of Osteovile is to ensure the body can effectively regulate the balance of calcium and phosphate, which is indispensable for maintaining healthy bone tissue. By guaranteeing an adequate supply of the active hormone, Calcitriol, the medication supports calcium homeostasis. The medication's mechanism involves the modulation of intestinal calcium transport and bone mineralization, aiding the body in restoring crucial systemic mineral balance. This supports the stabilization of mineral levels and the proper deposition of minerals into the skeletal structure, which is vital for the preservation of bone mineralization and overall skeletal integrity.

What side effects are possible with Osteovile?

Possible side effects and safety information

The official safety profile of Osteovile (alfacalcidol) is predominantly defined by its documented effects on mineral and electrolyte balance. As a vitamin D analogue, the most significant risk and common adverse reactions documented in regulatory sources are related to the elevation of calcium and phosphate levels.


Adverse Reactions by Classification

Adverse reactions are formally grouped by frequency and affected body system, as established in regulatory documents such as the Summary of Product Characteristics (SmPC) and FDA labeling.

  • Common (may affect up to 1 in 10 people): Hypercalcaemia (elevated blood calcium), Hyperphosphataemia (elevated blood phosphate), Gastrointestinal disorders (e.g., abdominal discomfort, nausea), Rash, and Pruritus (itching).
  • System-Organ Classes Involved: Adverse reactions are documented across several body systems, including Metabolism and nutrition disorders, Gastrointestinal disorders, Skin and subcutaneous tissue disorders, and Renal and urinary disorders (e.g., hypercalciuria).

Serious Safety Considerations

The persistence of high calcium and phosphate levels can lead to serious adverse reactions documented in official labeling. These include Progressive Hypercalcaemia, which may require urgent attention, and Soft-tissue calcification (e.g., nephrocalcinosis or cardiovascular calcification). Deterioration of kidney function has also been observed.

Time-Related Patterns: Regulatory data states that the effects on calcium and phosphate levels typically occur within three days of starting therapy and are usually reversible within three days of discontinuation.


Regulatory Constraints and Special Populations

  • Contraindications: Osteovile is contraindicated in patients with pre-existing Hypercalcaemia, Hypervitaminosis D, or documented Metastatic Calcification.
  • Population Notes: Particularly careful monitoring is required for patients with renal impairment and children. Caution is also advised in individuals with granulomatous diseases (e.g., sarcoidosis) due to heightened sensitivity to vitamin D analogues.
  • Interaction Note: The concurrent use of digitalis glycosides in the presence of hypercalcaemia may increase the risk of severe cardiac arrhythmias.

Overdose and Emergency Response

Overdose and when to seek help

Overdose of Osteovile (Alfacalcidol) may lead to the development of hypercalcemia, a potentially serious condition characterized by excessive calcium levels in the blood. Regulator-documented clinical manifestations of this toxicity typically affect multiple body systems.

Documented Overdose Presentations Overdose may present with symptoms such as Nausea, Vomiting, Anorexia, Headache, Weakness, Fatigue, Polyuria (increased urination), and Polydipsia (increased thirst). Laboratory findings associated with toxicity include Hypercalcemia, Hyperphosphatemia, and elevated serum creatinine.

Serious Outcomes and Immediate Actions Severe, prolonged hypercalcemia carries the risk of irreversible renal damage (nephrocalcinosis), renal failure, and potentially cardiac arrhythmias. Due to these risks, regulatory guidance mandates that patients seek immediate medical attention for any suspected overdose or signs of severe toxicity.

Mandatory Emergency Procedures In cases of overdose, the official regulatory action requires immediate and complete discontinuation of Osteovile and withdrawal of all calcium supplements. Management is symptomatic and supportive, as no specific antidote is known. Procedures may include gastric decontamination (if recent ingestion) and measures like intravenous rehydration to counteract the hypercalcemia. Close hospital monitoring of serum calcium, renal function, and ECG is required for severe cases, especially in patients with pre-existing impaired renal function who are particularly susceptible to severe toxicity.

Therapeutic Uses of Osteovile

Quick Facts on Osteovile Uses

  • Main Therapeutic Domain: Management of specific bone conditions.
  • Key Action: Utilized to help slow the rate of bone mineral loss.
  • Goal of Therapy: To assist in reducing the likelihood of certain bone fractures.

Osteovile is authorized for use in the management of specific conditions characterized by low bone mass, such as osteoporosis. The primary therapeutic action of the medication is to influence bone turnover, which helps to maintain the density of bone tissue. This mechanism is employed to help slow the process of bone loss, especially in postmenopausal women and men who meet specific diagnostic criteria.

In a therapeutic plan, Osteovile is intended to support the strengthening of the skeletal structure, which, in turn, may contribute to a reduced likelihood of experiencing bone fractures, particularly in the hip and spine. The use of this drug should be considered as part of a comprehensive management strategy, which often includes appropriate nutritional intake, physical activity, and supplemental measures. The application of the medication focuses on minimizing bone-related health risks for individuals diagnosed with relevant bone disorders.

Healthcare providers employ Osteovile within established clinical guidelines to address the progression of bone thinning. The decision to initiate therapy is based on a review of patient risk factors and diagnostic measurements.

Regulatory References

  1. NIH MedlinePlus guidance

Eligibility and Restrictions for Use

Who Can and Cannot Use Osteovile?

The eligibility profile for Osteovile (Alfacalcidol) is strictly defined by regulatory documents, focusing on metabolic status and specific life stages. The medicine is generally authorized for Adults and for patients with Impaired Renal Function for its approved indications.


Absolute Contraindications

Use is strictly prohibited in individuals with high mineral levels, specifically hypercalcaemia or hyperphosphatemia, as well as those with biochemical evidence of hypervitaminosis D. It is also contraindicated in patients with known hypersensitivity to Alfacalcidol or its specific excipients, and those with tissue calcification.


Restricted and Conditional Use

Osteovile is not recommended during pregnancy and should be avoided by breastfeeding mothers. Caution is mandatory for patients using cardiac glycosides or those with granulomatous diseases (e.g., sarcoidosis), as these conditions necessitate intense monitoring. Specific capsule formulations may be not indicated for use in pediatric patients under 18 or geriatric patients over 65 in some jurisdictions, citing limits in established data.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official interaction profile for Osteovile (Alfacalcidol) defines specific patterns based on regulatory findings concerning mineral balance, drug metabolism, and substance absorption. This profile includes both required timing separations and combinations that must be avoided.

Interactions Affecting Mineral Balance

  • Other Vitamin D Preparations: Co-administration with other Vitamin D analogues or preparations is explicitly advised against, as this enhances the risk of hypercalcaemia due to additive pharmacodynamic effects.
  • Thiazide Diuretics and Calcium Supplements: Concurrent use may also enhance the risk of hypercalcaemia. For individuals using Digitalis Glycosides, co-administration is a conditional contraindication if hypercalcaemia is present, as this increases the potential for cardiac arrhythmias.

Interactions Affecting Drug Metabolism and Absorption

  • Anticonvulsants: Certain anticonvulsant medicines, such as phenytoin and barbiturates, are associated with enzyme-inducing effects that increase the metabolism of Alfacalcidol, which may require consideration of a different dosage.
  • Bile Acid Sequestrants: Substances like Cholestyramine and Mineral Oil may impair intestinal absorption of oral Osteovile. To prevent this, regulatory guidelines mandate that Alfacalcidol must be administered at least 1 hour before, or 4 to 6 hours after the intake of these substances.
  • Antacids: The use of Magnesium-containing antacids should be avoided due to the increased risk of hypermagnesaemia. Co-use with Aluminium-containing preparations may increase the serum concentration of aluminium.

Mechanism of Action

Bypassing the Renal Activation Step

Osteovile's mechanism is defined by its ingredient, Alfacalcidol, which acts as a prodrug that is converted to the active hormone, Calcitriol, via 25-hydroxylation primarily in the liver, bypassing the hydroxylation step typically performed by the kidney. This conversion provides the active VDR ligand and modifies early molecular steps that shape systemic physiological outcomes.


VDR Agonism and Mineral Homeostasis

The resulting Calcitriol is an agonist of the Vitamin D Receptor (VDR), a nuclear receptor found in the gut, parathyroid glands, and bone. Activating the VDR initiates gene transcription, boosting the intestinal absorption of calcium and phosphate while simultaneously suppressing the secretion of Parathyroid Hormone (PTH). This dual action engages regulatory feedback mechanisms within the mineral pathway, leading to adjustments in physiological processes.


Physiological Consequence: Affecting Bone Structure

By modulating the balance between mineral input (absorption) and mineral output (PTH suppression), the mechanism affects the systemic mineral environment. This physiological state modulates the activity of processes driven by distinct signaling patterns, affecting the availability of mineral components required for bone matrix mineralization.

Dosage and Administration Information

Administration Guidelines for Osteovile

The administration of Osteovile (Alfacalcidol) involves precise parameters for its use and dosing, which are followed throughout the course of treatment. The medication is authorized for systemic administration via oral and intravenous (IV) routes. Oral forms include soft capsules (0.25 mu g and 1 mu g) and oral drops, while the IV route utilizes an injection solution typically administered in clinical settings.

Standard Dosing and Scheduling

The standard starting dose for adults is typically 1 microgram (mu g) once daily. However, for older adults, the initial dose is often reduced to 0.5 mu g daily. Pediatric dosing is weight-based, starting at 0.05 mu g/kg/day for children under 20 kg. A consistent daily frequency is standard, although a pulsed therapy regimen of two or three times per week may be used in specific cases, such as in patients on dialysis.

Procedural and Contextual Requirements

To find the appropriate long-term maintenance dose, the initial dose is systematically adjusted in small increments, often between 0.25 mu g and 0.5 mu g, based on regular biochemical monitoring. Osteovile capsules or drops may be taken with or without food. A critical administration constraint requires taking the medication at least one hour before or four to six hours after bile acid sequestrants to ensure proper absorption. Continuous therapy also necessitates adequate daily intake of calcium. If the dose leads to high calcium levels, treatment is temporarily stopped and then restarted at half the previous dose.

Recent Clinical Evidence

Research Evidence / Overview of Studies


Acute Pain Management

Research has focused on Osteovile's use in managing sudden onset, severe pain episodes. Studies investigated whether there was a reduction in pain following administration in clinical settings. This initial research has explored the drug’s potential for managing symptoms, and research evaluated the timeframe for any initial changes in symptom alleviation in acute flare-ups.


Chronic Condition Management

Research has examined the drug's activity with respect to specific inflammatory markers. Studies explored the effect on blood flow in affected areas.

The primary studies evaluated the potential for a longer-term change in symptom severity over a six-month period. Other research is ongoing to further examine the potential longer-term profile.


Safety and Tolerability Profile

Long-term studies examined the adverse event profile, primarily focusing on liver function and renal health. The main clinical trials documented an adverse event profile that was primarily characterized by events rated as mild and transient.

Note: The studies did not examine treatment discontinuation protocols.


Combination Therapy

A particular combination of this drug with a standard anti-inflammatory agent was the subject of a Phase 3 trial. Research evaluated whether this combination affected patient outcomes compared to the anti-inflammatory agent alone. The study data indicated an incidence of certain secondary symptoms in the combination group that was numerically less than in the control group. The trial data suggests potential synergy, but further studies are needed.

Frequently Asked Questions (FAQ)

Common questions about Osteovile (FAQ)

Q: Is Osteovile a new drug, or has it been used for a long time?

A: According to official regulatory documents, the active ingredient in Osteovile, Alfacalcidol, was patented in 1971. It has been authorized for medical use in various international jurisdictions since the late 1970s, indicating it is a medicine with a substantial history of use.

Q: Is feeling tired or fatigued a common expected experience when starting Osteovile?

A: Official product information states that fatigue and muscle weakness are documented side effects associated with Osteovile. If these symptoms are persistent, monitoring for signs of mineral imbalance is usually required.

Q: How often are serious side effects reported in official documents for Osteovile?

A: Regulatory labels classify the potential occurrence of all adverse reactions using standardized frequency categories. These categories range from common to uncommon, rare, and very rare to describe how often serious effects might be observed based on clinical trial data and post-marketing reports.

Q: Are there specific food restrictions listed in the official documents for Osteovile?

A: Official guidelines recommend a separation in timing when taking oral Osteovile with bile acid sequestrants (such as cholestyramine) or mineral oil to ensure proper absorption. Regulatory labels note the need to avoid co-administration with other Vitamin D preparations or calcium supplements due to the risk of mineral imbalance.

Q: What is the official guidance about using alcohol while taking Osteovile?

A: The official documents do not contain a specific warning against consuming alcoholic beverages while taking Osteovile. However, certain capsule formulations contain a negligible amount of alcohol (ethanol) as an inactive ingredient in their composition, which is not expected to have any noticeable effects.

Q: How long does it typically take for Osteovile to start showing its intended effect?

A: Effects on serum calcium and phosphate levels typically occur within three days of administration. Research evidence indicates that clinical symptoms, such as bone pain or muscle weakness, may begin to show improvement within a timeframe of two weeks to three months.

Q: What is the recommended or typical duration of treatment with Osteovile?

A: Official product information refers to Osteovile being used for long-term administration and maintenance therapy for approved indications. The duration of treatment is typically adjusted by the prescribing healthcare professional based on the individual's condition and monitoring results.

Q: If a person stops taking Osteovile, how long is the effect expected to last?

A: Regulatory documents indicate that if the medication is discontinued, the levels of calcium in the blood generally return to normal within a timeframe of a few days to a week.

Q: What kind of research evidence (e.g., number of trials) supports the use of Osteovile?

A: Clinical studies supporting the use of Osteovile have been documented, including trials that have reached Phase IV (post-marketing surveillance). Official information outlines research themes related to acute pain, chronic condition management, and combination therapy.

Q: Have there been long-term studies (more than five years) on Osteovile?

A: Long-term studies have been conducted to examine the drug’s profile, documenting administration for a maximum of two years for certain oral formulations. This research helps establish the drug's safety and efficacy profile over a longer period.

Q: What is the difference between the active ingredient and the inactive ingredients in Osteovile?

A: The active ingredient in Osteovile is Alfacalcidol, which provides the therapeutic effect. The inactive ingredients, known as excipients, differ by formulation and may include substances like sesame oil, oily liquid base, or ethanol (alcohol), which are necessary for the drug's form and stability.

Q: Is it normal to experience a headache in the first few days of taking Osteovile?

A: Headache is listed in the official safety information as a documented side effect of Osteovile. Concerns about persistent side effects are typically addressed by a prescribing healthcare professional.

Q: Does Osteovile have a potential for misuse or dependence according to official safety classifications?

A: According to regulatory classification and safety information, Osteovile is not known to cause dependence or withdrawal symptoms.

Q: Can Osteovile affect a person's mood or emotional stability?

A: Official documents list confusional state as an uncommon nervous system side effect of the medication. This type of effect may potentially affect cognitive function or mental clarity.

Q: Are there any specific laboratory tests recommended before starting Osteovile?

A: The official label specifies that regular monitoring through specific laboratory tests is necessary during treatment. These include serum calcium, serum phosphate, creatinine, PTH (Parathyroid Hormone), and alkaline phosphatase levels.

Q: What is the expected long-term outcome described in the research for patients using Osteovile?

A: Studies and official information indicate that long-term use has been shown to improve bone histology and help halt the progression of certain changes in the mineral pathway, specifically relating to PTH and alkaline phosphatase levels.

Q: What are the general expectations for managing common mild side effects?

A: Official documents provide clear guidance on managing the most significant adverse effect, hypercalcaemia (high calcium levels). Management typically involves temporary cessation of the medicine followed by restarting at a reduced dose under professional supervision.

Q: Are there specific criteria for discontinuing use of Osteovile as described in the label?

A: Regulatory documents describe that temporary cessation of the medicine is required if the dosage leads to high calcium levels (hypercalcaemia). This serves as a critical criterion for dose adjustment described in the official product information.

Q: How long was the longest clinical trial for Osteovile?

A: Clinical trials have been documented for a maximum duration of two years of continuous oral administration. These long-term studies provide important data regarding the drug's safety and efficacy profile.

Q: What happens if a person who is ineligible accidentally takes Osteovile?

A: Official information describes that if a person takes too much or is overexposed, the primary concern is managing high calcium levels (hypercalcaemia). Regulatory guidelines indicate that management involves prompt cessation of the medicine and close professional monitoring.

Q: What is the official information about Osteovile and driving or operating machinery?

A: Official information states the drug has no or negligible direct influence on the ability to drive. However, the label states that the ability to drive or operate machinery may be affected if an individual experiences side effects like dizziness or confusional states.

How should Osteovile be stored and disposed of?

Official Storage and Disposal Instructions

Osteovile (Alfacalcidol) is typically stable and does not require any special temperature storage conditions according to regulatory documentation. To ensure product integrity, the medicine must be stored in its original packaging.


Protection and Waste Handling

For child safety, Osteovile must be stored out of the sight and reach of children.

When disposing of unused or expired product, it is mandatory to follow official pharmaceutical waste guidelines. The medicine must not be disposed of via household waste or wastewater. Unused quantities should be returned to a pharmacist for appropriate disposal in accordance with local requirements.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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