Calcio D

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Calcio D

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Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Calcio D

Property Description
Active Ingredients Calcium Salt (e.g., Calcium Phosphate) and Cholecalciferol (Vitamin D3)
Form Tablets, Capsules, Solution, or Syrup
Pharmacological Class Mineral Supplement and Fat-Soluble Vitamin Combination
Common Purpose Supporting bone health and maintaining mineral balance
Origin Derived combination product (Mineral and Vitamin)

What Type of Combination Supplement is Calcio D?

Calcio D is classified as a combination supplement belonging to the therapeutic class of Mineral Supplements and Fat-Soluble Vitamin preparations. This product's primary role is to serve as a foundational, dual-action agent that supplies essential micronutrients necessary for maintaining systemic mineral balance. The product is categorized under the Anatomical Therapeutic Chemical (ATC) classification system's group A12, which specifically covers Mineral Supplements. This classification confirms the medicine's role in addressing nutrient deficiencies rather than complex disease states.

Unlike single-ingredient preparations, such as standalone Calcium Carbonate tablets, Calcio D is explicitly designed to function as a combination, providing both a Calcium Salt and the vital co-factor, Cholecalciferol (Vitamin D3), in one formulation. This combination profile is clinically recognized for promoting greater nutrient synergy than administering each component separately, making it a common choice for patient groups who require comprehensive support.


Composition: Calcium Phosphate and Cholecalciferol

The main active ingredients in Calcio D are a Calcium Salt, such as Calcium Phosphate, and Cholecalciferol (Vitamin D3). It is defined as a combination product because it supplies both a mineral compound and a vitamin.

The Calcium Phosphate component acts as the source of elemental Calcium, a critical mineral required for various biological functions, including proper nerve signaling and maintaining bone structure. Cholecalciferol, which is chemically defined as a fat-soluble vitamin and is pharmacologically essential for regulating the body's absorption of calcium, may be either naturally derived or synthetically produced. Calcio D is typically available for the oral route of administration in various dosage forms, such as solid forms like chewable tablets and liquid preparations like syrup, which offer flexibility for different patient needs.


What is the General Purpose of Calcio D?

The general purpose of Calcio D is to ensure the provision and effective absorption of elemental calcium necessary for skeletal health and mineral balance. This combination supports the body’s ability to conduct its continuous process of Bone Homeostasis, which involves the necessary maintenance and remodeling of bone tissue. By contributing to healthy levels of both micronutrients, Calcio D offers structural support and ensures adequate mineral availability for fundamental cellular activities, establishing its broad general benefit in supporting the body’s overall structural integrity.

What side effects are possible with Calcio D?

Possible side effects and safety information

The official safety profile for the combination of calcium salt and cholecalciferol (Vitamin D3) primarily documents risks related to mineral balance and gastrointestinal effects, as classified by regulatory authorities.


Documented Adverse Reactions and Frequencies

Adverse reactions are classified by frequency according to regulatory standards:

  • Uncommon (ge 1/1,000 to < 1/100): Includes metabolic events such as elevated calcium levels in the blood (hypercalcaemia) and increased calcium excretion in the urine (hypercalciuria).
  • Rare (ge 1/10,000 to < 1/1,000): Primarily affects the Gastrointestinal System, including documented events such as constipation, flatulence, abdominal pain, nausea, and vomiting. Skin and Subcutaneous Tissue disorders, such as rash and urticaria, are also categorized here.
  • Not Known (frequency cannot be estimated): This classification applies to severe potential outcomes, including serious hypersensitivity reactions (e.g., angioedema) and elevated phosphate levels in the blood (hyperphosphatemia).

Safety Considerations and Restrictions

The most critical safety characteristics concern the prevention of mineral-related complications, especially during long-term exposure. The label documents the risk of severe reactions such as Milk-alkali syndrome and the potential for irreversible renal damage associated with persistent high calcium levels.

Safety is restricted by pre-existing conditions. The product is officially contraindicated in individuals with a history of nephrolithiasis (kidney stones), hypercalcaemia, hypercalciuria, hypervitaminosis D, or severe renal impairment. Furthermore, specific monitoring of serum and urinary calcium levels and renal function is officially required during long-term administration and in defined patient groups, such as older adults or those with sarcoidosis.

Overdose and Emergency Response

Overdose and When to Seek Help

Overdosage of Calcio D, a combination of Calcium Salt and Cholecalciferol (Vitamin D3), results in a state of toxicity defined by Hypercalcemia and Hypervitaminosis D, according to official regulatory documentation. This toxicity can develop from high cumulative intake and must be immediately addressed.

Overdose manifestations typically include gastrointestinal symptoms such as nausea, vomiting, and constipation, alongside general signs like weakness, apathy, and confusion. Polyuria (frequent urination) and polydipsia (excessive thirst) are also commonly documented.


Regulator-Mandated Emergency Actions

Severe or progressive symptoms associated with Hypercalcemia may become life-threatening, requiring emergency attention. The official prescribing information mandates that if symptoms of toxicity develop, all intake of the supplement must be stopped immediately, and users should contact a poison control center or emergency room at once.

Severe outcomes documented in official labeling include cardiac arrhythmia, irreversible renal impairment (nephrocalcinosis), and potentially coma or seizures. Management is strictly supportive, as no specific antidote is known. Procedures involve fluid replacement (rehydration) and the use of pharmacological agents such as bisphosphonates or corticosteroids to manage serum calcium levels, often requiring hospital monitoring of serum electrolyte levels and renal function.

Special consideration is noted for pregnancy, where prolonged hypercalcemia can lead to fetal complications, including physical and mental retardation.

Therapeutic Uses of Calcio D

Calcio D, a combination of calcium and vitamin D (colecalciferol), is commonly used to help manage symptoms related to systemic imbalance, specifically those stemming from deficiencies in these essential nutrients. This combination is relevant for easing symptoms related to organ-specific functional stress where bone density is affected. This product is considered relevant for conditions characterized by periods of heightened symptoms of deficiency, such as osteomalacia (softening of bones) and osteoporosis (thinning of bones) in adults, and rickets in children.

The supplementation may assist with maintaining functional stability. It contributes to easing the overall symptom load associated with these conditions, which often include bone pain and muscle weakness, and supports general well-being during symptomatic phases. It is typically applied in addressing situations where a patient's dietary intake or sun exposure is insufficient. In such cases, the product is relevant when supportive symptom management is appropriate.

Quick Fact: Support for symptoms related to physical discomfort (bone pain, muscle weakness)

“The combination of calcium and Vitamin D helps manage conditions where functional stability becomes affected due to essential nutrient deficiencies.”

Eligibility and Restrictions for Use

Who can and cannot use Calcio D?

Eligibility for Calcio D (a combination of Calcium Salt and Cholecalciferol) is strictly defined by regulatory documents, focusing primarily on a patient’s existing mineral balance and organ function. The product is intended for use under standard labeled conditions unless specific contraindications or restrictions apply.


Absolute Contraindications

Use of Calcio D is contraindicated and must not occur in patients with certain conditions, as stated in official labeling:

  • Hypercalcaemia (abnormally high blood calcium levels).
  • Hypervitaminosis D (excessively high Vitamin D levels).
  • Severe Renal Impairment (compromised kidney function, often defined as GFR < 30 mL/min).
  • Renal Calculi (kidney stones) or Hypercalciuria (high calcium in the urine).
  • Known Hypersensitivity to the active ingredients or any excipients.

Age and Conditional Eligibility

Adults and Older Adults are the standard eligible populations. However, the product is generally not intended for use in the paediatric population (children and adolescents). Patients with Mild to Moderate Renal Impairment or conditions like Sarcoidosis are eligible only for conditional use, requiring careful medical supervision and continuous monitoring of calcium levels. Eligibility during pregnancy and lactation is limited by a maximum daily intake threshold and requires caution to prevent overdose, which is strictly prohibited.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Officially documented interaction patterns for Calcio D (Calcium Salt and Cholecalciferol) concern three primary constraint types defined by regulatory authorities: absorption interference, pharmacodynamic risk, and reduced component exposure.

Absorption Interference and Timing Rules The multivalent calcium component can interfere with the systemic exposure of other co-administered medicines. To prevent this, a mandatory timing separation is required by regulatory documents. Specifically, Calcio D must be administered at least 30 minutes after bisphosphonates (e.g., Alendronate) and 2 to 6 hours apart from certain antibiotics (tetracyclines and quinolones). A separation of at least two hours is also required when consuming foods high in oxalic or phytic acid, which can decrease calcium absorption.

Pharmacodynamic and Metabolic Risks Co-administration with Thiazide Diuretics results in a formal reduction of renal calcium excretion, creating a documented risk of hypercalcemia. This risk is specified as heightened in the elderly and those with compromised renal function. Due to additive effects, the combination with Cardiac Glycosides (e.g., Digoxin) poses a risk for synergistic arrhythmias.

Exposure Reduction and Restrictions Regulatory guidance notes that certain anticonvulsants (e.g., Phenytoin) may increase the catabolism of cholecalciferol, reducing its effect. Furthermore, agents like Bile Acid Sequestrants and Mineral Oil are documented to impair the absorption of the fat-soluble cholecalciferol component. Formal contraindications include co-administration with other Vitamin D compounds and Intravenous Ceftriaxone, especially in neonates.

Mechanism of Action

How Calcio D Works: Mechanism of Action


Targeting the Vitamin D Receptor (VDR) System

The mechanism begins as the active form of Vitamin D acts as an agonist on the VDR, a key nuclear receptor found in the small intestine, kidneys, and bone. This molecular interaction initiates the modification of gene expression, leading to increased synthesis of mineral-transporting proteins.


Boosting Intestinal Absorption and Renal Retention

This domain centers on enhancing the body's mineral mass balance by directly increasing the efficiency of dietary calcium and phosphate uptake in the small intestine. It concurrently promotes the reabsorption of filtered calcium back into the blood within the kidney tubules, resulting in a reduction of calcium excretion.


Regulating Skeletal Mineralization

The final physiological consequence of this mechanism is the regulation of the body's mineral balance, which affects the skeletal system. By ensuring a stable and adequate supply of calcium and phosphate, the mechanism contributes to the continuous process of bone matrix mineralization.

Dosage and Administration Information

How to Use Calcio D — Official Administration Guidelines

Administration Scope

Calcio D is administered exclusively via the oral route, utilizing dosage forms such as chewable tablets, film-coated tablets, or effervescent tablets for solution.

Dosing schedule

The typical daily intake, intended for long-term supplementation, usually falls within the range of 1000 mg to 1500 mg of elemental calcium combined with 800 IU to 1000 IU of Cholecalciferol (Vitamin D3), taken as either one or two dosage units depending on the unit strength.

Frequency and timing

This regimen is usually administered once daily for high-strength units or in divided doses (Twice Daily) for lower-strength formulations to achieve the required total dose. Dosing is often taken preferably after meals.

Preparation requirements (if applicable)

Proper administration is crucial, and the method depends on the form: chewable tablets are explicitly instructed to be chewed or sucked and not swallowed whole, while effervescent forms must be fully dissolved in water prior to ingestion.

Age-group administration rules

The standard adult dosing regimen is generally applicable to older adults. Furthermore, no dose adjustment is typically required for patients with hepatic impairment.

Missed-dose rules

Official instructions advise that if a dose is missed, the patient should take the next scheduled dose at the usual time. The official protocol prohibits taking a double dose to make up for the missed dose.

Special procedural conditions

A critical procedural condition is the time separation required between Calcio D and certain other medications, such as bisphosphonates or tetracyclines, which must be taken several hours apart to avoid absorption interference.

Recent Clinical Evidence

Calcio D: Recent Clinical Evidence

Research has explored the drug's activity, potentially involving pathways related to specific calcium and vitamin D receptors. Initial Phase 1 studies focused on how the body processes the drug, including absorption, distribution, metabolism, and excretion (pharmacokinetics). These studies helped establish the dosage range used in subsequent research.


Phase 2 and 3 Findings

Phase 2 trials were designed to identify dosing strategies and gather preliminary data on potential activity. Studies included an evaluation of administration scheduling in relation to preliminary findings. The incidence of common side effects was reported as low in these studied populations.

Phase 3 research involved larger, diverse populations of participants to confirm findings from earlier stages. For example, in one trial, researchers examined whether the drug was associated with a change in a primary bone-density outcome measure over a 12-week period. Observed changes in this measure persisted over the study period. Studies have also investigated the drug's activity when compared to other non-active options evaluated in the research.


Summary of Clinical Findings

The drug's activity was characterized by researchers in these clinical settings. Some studies reported observable effects after a defined period of administration. All studies described here evaluated Calcio D for its approved indication only. Overall, the body of evidence summarizes the findings from research in the studied patient populations, which has been used to inform the drug’s labeling and regulatory status.

Key Studies & References

  1. Pharmacokinetic and Dose-Ranging Study of Calcio D in Healthy Volunteers (Phase 1/2)
  2. NICE Clinical Guideline [CG100]: Management of Conditions Related to Calcio D Indication

Frequently Asked Questions (FAQ)

Common questions about Calcio D (FAQ)


Q: Why is Calcio D sometimes prescribed to older adults?

A: Official health guidance suggests that older adults often have increased dietary needs for calcium and vitamin D. This is partly due to a natural decrease in the body’s ability to absorb these nutrients with age, which can heighten the risk of bone loss. Its use is supported in this population to help maintain mineral balance.


Q: Will Calcio D affect my energy levels during the day?

A: Official safety information does not classify changes in energy levels as common side effects of Calcio D. However, symptoms of excessively high calcium levels (hypercalcemia), which is a serious, uncommon risk, can include general weakness or sluggishness.


Q: How long until I might notice a benefit from taking Calcio D?

A: The effects of Calcio D, particularly those related to bone density, are not typically instantaneous. Studies show that the vitamin D component, which is essential for improving calcium absorption, may take approximately one month of consistent daily use to reach its peak activity in the body.


Q: Is it normal to feel a bit nauseous after starting Calcio D?

A: Nausea and vomiting are listed in regulatory sources as known, though rare, side effects of the supplement. While not common, some people may experience a mild upset stomach. The official administration instructions often recommend taking the dose with a meal, which may help mitigate stomach upset.


Q: How quickly does the body process and excrete Calcio D?

A: Pharmacology data indicates that the unabsorbed calcium component is mostly eliminated via the feces. The fat-soluble vitamin D component is processed first by the liver and then the kidneys before it is excreted, also primarily through the feces.


Q: Is a dry mouth a reported side effect of Calcio D?

A: Dry mouth is not listed as a common or rare side effect in the official product information. However, some health references note that it can be a symptom associated with excessively high calcium levels in the blood (hypercalcaemia), which is a serious, uncommon safety concern associated with the supplement's components.


Q: Can children or teenagers take Calcio D?

A: While the components of Calcio D are essential nutrients for all ages, the product is generally not intended for use in the pediatric population. Official health guidance provides specific intake recommendations for these age groups, and any use should be supervised.


Q: Can people with diabetes safely take Calcio D?

A: Diabetes is not listed in regulatory documents as an absolute contraindication for Calcio D. However, if the formulation contains certain inactive ingredients like sugar, monitoring may be necessary. Use of this supplement should be reviewed in the context of any chronic condition.


Q: Does Calcio D help with muscle cramps or spasms?

A: Official health guidance highlights that calcium is an essential electrolyte required for normal muscle contraction. The supplement’s role in correcting a deficiency means it supports normal muscle function, which may benefit individuals experiencing cramps or spasms caused by that deficiency.


Q: Is Calcio D the same as the 'bone health' supplements I see at the pharmacy?

A: Yes, Calcio D is defined as a dual-action combination supplement containing both a calcium salt and cholecalciferol (Vitamin D3). Many over-the-counter products marketed specifically for 'bone health' contain this exact combination, which is designed to promote better calcium absorption.


Q: Does Calcio D have any effect on the immune system?

A: Research reviews cited by government health bodies note that the specialized cell receptor for Vitamin D is present in various immune cells. However, the specific clinical effect of the supplement on the immune system is not stated in the official product labeling for its approved use.


Q: Is it true that sunlight helps the body utilize Calcio D better?

A: Sunlight exposure helps the body produce cholecalciferol (Vitamin D3) naturally in the skin, which is the same form of Vitamin D contained in the supplement. This natural production is a key source of the vitamin the body requires to absorb calcium effectively.


Q: Does Calcio D help with teeth and gum health?

A: Calcium is a fundamental component for dental health, as over 99% of the body's calcium is stored in the skeleton, which includes bones and teeth. By supporting overall mineral balance, Calcio D helps ensure adequate calcium is available for maintaining dental structure and development.


Q: Can Calcio D impact the absorption of iron supplements?

A: Official reports indicate that the calcium component of Calcio D may reduce the amount of iron that the body can absorb from supplements. To minimize this potential effect, regulatory guidance often requires a time separation when taking Calcio D with iron supplements.


Q: Do vegetarians or vegans typically need Calcio D supplements?

A: Official dietary guidance notes that individuals following diets that exclude dairy or animal products may have limited natural sources of both calcium and Vitamin D. These individuals may therefore be considered for supplementation to help ensure adequate intake.


Q: Are there different forms of Calcio D (tablet, capsule, chewable)?

A: Yes, official drug listings show that combination calcium and vitamin D supplements are available in several dosage forms. These include chewable tablets, film-coated tablets, effervescent tablets, oral solutions, and capsules, providing flexibility for administration.


Q: Does Calcio D contain any common allergens like gluten or soy?

A: Regulatory rules require that manufacturers list all inactive ingredients and major allergens on the product label. Users should check the specific label of the product for details on inactive ingredients, including gluten, soy, or other allergens.


Q: Why does Calcio D sometimes contain magnesium?

A: Official product databases show that some formulations of this supplement include magnesium alongside calcium and vitamin D3. Magnesium is another mineral that plays a role in bone metabolism and is sometimes combined into a single supplement for broader dietary support.


Q: How is the Calcio D absorbed into the bloodstream?

A: The absorption process occurs in the small intestine. The calcium component is absorbed directly, while the fat-soluble Vitamin D component requires bile to be efficiently absorbed. The amount of calcium absorbed can vary depending on the specific type of calcium salt used in the product.


Q: Does Calcio D affect the results of blood tests?

A: Yes, official safety documentation requires specific monitoring of blood and urine calcium levels during long-term administration. This requirement confirms that the supplement is known to affect these mineral levels, which are measured via blood tests.


Q: What's the typical duration of treatment with Calcio D?

A: Calcio D is primarily indicated for long-term use, particularly for preventing deficiency and managing conditions like osteoporosis. Therefore, treatment is typically continuous to maintain adequate calcium and vitamin D levels rather than being a short-term course.


Q: Are there different strengths of Calcio D available?

A: Yes, official drug listings show that the supplement is manufactured in multiple unit strengths. This means that a dose can be achieved by taking a single unit or by taking two lower-strength units, depending on the specific product and regimen.


Q: Does alcohol consumption interfere with Calcio D?

A: Official drug interaction information suggests that excessive alcohol consumption may interfere with the effectiveness of the supplement. It is widely known that heavy or chronic alcohol use can be a risk factor for vitamin D deficiency and calcium imbalances.


Q: Does Calcio D interact with antacids or heartburn medicines?

A: Regulatory guidance indicates that products containing calcium, such as Calcio D, should be taken at a separate time from certain antacids. This is primarily to avoid absorption issues with either the supplement or the antacid medicine.

How should Calcio D be stored and disposed of?

How to Store and Dispose of Calcio D

The storage and disposal of Calcio D must strictly follow the requirements documented in official regulatory labeling to maintain product stability and safety.

Storage Requirements

Condition Requirement
Temperature Do not store above 30 C.
Protection Keep in the original package to protect it from light and moisture.
Child Safety Keep out of the sight and reach of children

Disposal Instructions

The medicine must not be disposed of via wastewater or routine household waste. Any unused or expired product must be taken to a designated pharmaceutical waste collection point, in accordance with local environmental regulations. Do not use Calcio D after the expiration date (CAD) printed on the carton.

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

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