Engflag

Calcivit

Quick links to important sections

Calcivit

Calcivit_DE

Treatment option:

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 Calcivit

Quick Facts

Property Description
Active Ingredients Calcium Hydrogen Phosphate, Colecalciferol (Vitamin D3)
Form Solid Oral Dosage Form (Tablet/Capsule)
Pharmacological Class Mineral and Vitamin Supplement, Calciotropic Agent
General Purpose Nutritional support for bone health and mineral homeostasis
Combination Type Fixed-dose combination product

What Kind of Supplement is Calcivit?

Calcivit is a combination product classified pharmacologically as a Mineral and Vitamin Supplement and, more specifically, a Calciotropic Agent. This formulation is designed as foundational nutritional support provided in a Solid Oral Dosage Form for oral administration. The designation of Calciotropic Agent means its primary action involves regulating the metabolism and utilization of calcium in the body. The combined use of calcium and Vitamin D is recognized as essential for supporting skeletal health, positioning Calcivit as a standard intervention for individuals needing reliable supplementation to maintain mineral homeostasis.

Composition: Calcium Hydrogen Phosphate and Colecalciferol

The active core of Calcivit features two essential ingredients: Calcium Hydrogen Phosphate and Colecalciferol (Vitamin D3). The product combines a mineral source with a vitamin, providing the Calcium component alongside the critical factor for its absorption. Calcium Hydrogen Phosphate is a mineral compound, while Colecalciferol is the form of Vitamin D typically utilized by the body and is often produced from natural sources or through synthesis, making the final product a pairing of a synthetic mineral compound and a substance that is either naturally derived or synthesized. This combination utilizes the necessary interaction between the two components for optimal bioavailability.

General Purpose and Core Physiological Benefit

The core physiological benefit of Calcivit is its synergistic action to optimize bone mineralization and overall skeletal integrity. The Colecalciferol component acts as a crucial regulator, significantly enhancing the efficiency of intestinal calcium absorption from the supplement. This action ensures that the body receives and utilizes the supplied Calcium effectively. Consequently, the general purpose is to provide the necessary nutritional support to maintain the density and strength of bones and teeth, which are the main biological reservoirs for calcium.

Regulatory References

  1. Dietary Supplements - MedlinePlus
  2. NIH Office of Dietary Supplements

What side effects are possible with Calcivit?

Possible side effects and safety information

The officially documented safety profile for Calcivit (Calcium/Colecalciferol) is characterized primarily by adverse reactions affecting mineral homeostasis and the gastrointestinal system, as classified by regulatory authorities like the European Medicines Agency (EMA).

Frequency-Classified Adverse Reactions

The most frequent safety concerns are related to Metabolism and Nutrition Disorders.

Classification Adverse Reactions (Examples) System-Organ Class
Uncommon Hypercalcaemia (high blood calcium), Hypercalciuria (high urine calcium) Metabolism and nutrition disorders
Rare Constipation, Flatulence, Nausea, Abdominal pain, Pruritus, Rash, Urticaria Gastrointestinal and Skin disorders
Not Known Severe Hypersensitivity reactions (e.g., angio-oedema) Immune system disorders

Safety Considerations and Restrictions

The regulatory label documents serious adverse sequelae of persistent mineral imbalance, including nephrolithiasis (kidney stones) and nephrocalcinosis (kidney calcification), which are noted consequences of hypercalciuria.

Specific safety restrictions define populations where use is contraindicated or requires caution:

  • Contraindications apply to pre-existing conditions of mineral excess, such as hypercalcaemia, hypercalciuria, and hypervitaminosis D, as well as severe renal impairment.
  • Caution is required for patients with sarcoidosis and those who are immobilized with osteoporosis due to an elevated risk of hypercalcaemia, necessitating specialized monitoring of calcium levels.

For patients on long-term treatment, regulatory documents state that monitoring of both serum calcium levels and renal function is required. This duration-related safety pattern emphasizes the need to observe for mineral over-accumulation over time.

Overdose and Emergency Response

An overdose of Calcivit (Calcium Hydrogen Phosphate and Colecalciferol) is officially characterized by Hypercalcaemia, a condition of excessive calcium in the blood, often resulting from hypervitaminosis D. The officially documented clinical manifestations of overdose include systemic and gastrointestinal effects such as nausea, vomiting, anorexia, constipation, and increased fluid output indicated by polydipsia and polyuria. Patients may also experience muscle weakness and fatigue.

Regulatory documents outline severe outcomes that require urgent attention. Overdose carries a risk of kidney dysfunction and nephrocalcinosis, and in severe, prolonged cases, there is an official association with cardiac arrhythmias. Due to the potential for these severe and life-threatening complications, the regulatory requirement is to seek immediate medical attention or contact emergency services upon suspected or symptomatic overdose. Management procedures mandate the immediate cessation of Calcivit and other calcium or Vitamin D supplements.

No specific antidote is known for Colecalciferol toxicity; therefore, treatment is officially defined as symptomatic and supportive. This involves procedural steps such as rehydration and the use of pharmacological agents, including diuretics or bisphosphonates, under supervision. Hospital monitoring may be required to track serum calcium levels and renal function. Patients with pre-existing renal impairment are officially noted as having increased susceptibility to these overdose complications.

Therapeutic Uses of Calcivit

What Calcivit Treats: Main Uses and Benefits

Calcivit is relevant in contexts involving heightened systemic burden in relation to bone health and nutritional balance. It is generally used in situations involving certain distressing symptoms to help ease the overall symptom load.

Core therapeutic indications for this category include providing support for the prevention and management of vitamin D and calcium deficiencies and acting as an adjunct to specific osteoporosis treatments.

The medication is relevant for easing symptoms related to structural weaknesses and is also commonly used across conditions presenting with acute episodes where systemic imbalance is present. It is also considered relevant in contexts involving heightened systemic burden, such as during pregnancy and rapid growth phases in adolescents.

“It is used for managing symptoms that interfere with daily comfort, such as muscle cramps or fatigue, and may assist with short-term symptomatic assistance when needed.”

Quick Fact: Relief for Musculoskeletal Discomfort

Calcivit provides supportive relief when symptoms interfere with routine activities, helping to improve day-to-day comfort during symptomatic periods.

Eligibility and Restrictions for Use

Eligibility Map: Who Can and Cannot Use Calcivit

Populations for whom use is allowed (as stated in label): Use is established for adults and the elderly. During pregnancy and lactation, use is permitted only to correct a documented calcium and Vitamin D deficiency and must remain within specified daily dosage limits.

Populations for whom use is contraindicated (Must Not Use): Calcivit is contraindicated in patients with conditions resulting in pathologically high calcium levels in the blood (hypercalcaemia) or urine (hypercalciuria). Patients with Severe Renal Impairment, a history of kidney stones (nephrolithiasis), Hypervitaminosis D, or hypersensitivity to the ingredients must not use this medicine.

Age-related Eligibility Rules: The standard high-strength formulation is not intended for use in the pediatric population (children and adolescents).

Eligibility-related Restrictions: Use requires caution and monitoring in patients with non-severe impaired renal function, sarcoidosis, or in immobilized patients with osteoporosis. Patients with rare hereditary excipient-related problems are generally advised against use.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Calcivit (Calcium/Colecalciferol) interacts with several medicinal products, primarily by altering systemic mineral balance or modifying absorption. All documented interactions are based on official regulatory labeling.

Documented Interaction Patterns

Classification Interacting Agents / Examples Official Constraint / Outcome
Contraindicated Combinations Other Vitamin D Analogues (e.g., Calcitriol) Avoid due to high risk of additive hypercalcemia (excessively high calcium levels).
Timing-Based Rules Tetracycline & Quinolone Antibiotics, Bisphosphonates, Levothyroxine Mandatory separation of administration (2 to 4 hours) is required to prevent calcium from reducing the absorption of these medicines.
Metabolic / Exposure Risk Enzyme Inducers (e.g., Phenytoin, Rifampicin), Glucocorticoids May reduce the effect of Colecalciferol due to accelerated metabolism or decreased calcium absorption.
Pharmacodynamic Risks Thiazide Diuretics (e.g., Hydrochlorothiazide), Cardiac Glycosides (e.g., Digoxin) Diuretics increase the risk of hypercalcemia. Hypercalcemia, if present, can significantly potentiate the toxicity of Cardiac Glycosides.

Other Administration Constraints

Products that inhibit fat absorption, such as Bile Acid Sequestrants and Mineral Oil laxatives, may impair the absorption of the Colecalciferol component. Certain foods high in oxalic or phytic acid (e.g., spinach, whole grains) can also interfere with calcium absorption. Specific caution regarding interaction severity is noted in patients with renal impairment, where the risk of hypercalcemia and ectopic calcification is heightened during co-administration.

Mechanism of Action

Molecular Regulation and VDR Activation

The mechanism begins when the Vitamin D3 component, Colecalciferol, is metabolized to its active form, which acts as a ligand agonist for the nuclear Vitamin D Receptor (VDR). This receptor activation initiates a genomic response, primarily upregulating the synthesis of intestinal transport proteins like TRPV6 and Calbindin-D9k.

Enhanced Systemic Transport and Substrate Synergy

The upregulation of transport proteins results in enhanced transcellular uptake. The Calcium Hydrogen Phosphate component provides the necessary Ca^2+ and PO4^3- substrate, which the now-optimized machinery efficiently moves from the intestine into the bloodstream. This synergistic action facilitates the systemic delivery of the essential ions.

Mineral Cascade and Structural Biochemistry

The systemic availability of Ca^2+ and PO4^3- influences the biological processes of the Calciotropic Axis. The delivered ions are utilized in the bone mineralization cascade, contributing to hydroxyapatite formation. This mechanism contributes to the biochemical processes underlying skeletal structure and the regulation of mineral balance.

Dosage and Administration Information

This section provides standard instructions for using Calcivit (or similar combination products containing calcium carbonate and colecalciferol/Vitamin D3) based on established product labeling.

Administration Scope

Instruction Category General Requirement
Route of Administration Oral
Dosing Schedule (Adults/Elderly) One tablet twice daily
Preparation Requirements The product form (e.g., chewable tablet) may require being chewed or sucked completely before swallowing
Age-Group Administration The specific dose (e.g., twice daily regimen) is established for Adults and the Elderly

Special Administration Conditions and Timing

To ensure proper absorption and effectiveness, labeling specifies important considerations regarding timing relative to food:

  • Food Timing Constraint: The medicine should not be taken at the same time as meals containing substances known to inhibit calcium absorption. Specifically, it is advised to avoid taking the product within two hours before or after consuming foods rich in oxalic acid (such as spinach or rhubarb) or phytic acid (found in whole cereals and pulses).

  • Missed Dose Guidance: If a regular dose is missed, the general approach is taking it as soon as it is remembered, unless it is nearly time for the next scheduled dose, in which case the missed dose should be skipped.

Following these administration and timing instructions ensures adherence to the established use protocol.

Recent Clinical Evidence

Research evidence / Overview of studies for Calcivit

Evidence for Use in Correcting Vitamin D and Calcium Deficiency

Research exploring the effects of combining Calcium and Colecalciferol (Vitamin D3) has been studied for its application in conditions associated with systemic or functional imbalance. The core focus of this research was studied for its potential to assess key biomarkers of deficiency. Human Intervention Studies and Randomized Controlled Trials (RCTs) monitored changes in the blood concentration of a primary marker for deficiency: Serum 25-hydroxyvitamin D [25(OH)D]. They also monitored Parathyroid Hormone (PTH) levels, a protein studied in relation to mineral metabolism. Studies often reported that the combination was associated with measured increases in the levels of 25(OH)D.

These studies often had relatively short follow-up durations, typically ranging from a few months up to nine months. Therefore, while research describes short-term changes in key blood markers, long-term outcomes are not fully established or well-characterized across all patient groups. Research continues to explore the need for using this fixed combination product over its individual components.

Research on Use as an Adjunct to Osteoporosis Treatment

Extensive research has examined the role of Calcium and Vitamin D supplementation, particularly when outcomes were evaluated when the combination product is used alongside specific treatments for conditions like osteoporosis. This evidence largely comes from large-scale Randomized Controlled Trials (RCTs) and comprehensive meta-analyses. These long-term studies, which sometimes lasted two to five years, studies explored two main outcomes: skeletal outcomes (such as non-vertebral and hip fractures) and changes in Bone Mineral Density (BMD). The meta-analyses that research examined often reported patterns related to skeletal outcomes in specific high-risk groups, such as older adults residing in institutional care settings. However, findings were often mixed and heterogeneous (inconsistent) when evaluating the same combination in community-dwelling adults.

How should Calcivit be stored and disposed of?

How to Store and Dispose of Calcivit

Official regulatory guidelines define specific conditions to maintain the stability and effectiveness of Calcivit (Calcium/Colecalciferol) and ensure proper disposal.

Storage Requirements

  • Temperature: Store at Controlled Room Temperature, typically below 25 C or 30 C (77 F–86 F). The product must not be frozen.
  • Protection: Keep the medicine out of the sight and reach of children.
  • Container: Store in the original container and keep the lid or cap tightly closed to protect it from light and moisture.

️ Disposal Instructions

  • Unused or expired Calcivit must not be disposed of in household trash or poured down a drain (wastewater).
  • The product must be disposed of via a proper take-back program or returned to a pharmacy to comply with pharmaceutical waste regulations.

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

Available in countries:

flagSwitzerland

Equivalent of Calcivit found in:

A-Z Index: