CalciCare-D3

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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 CalciCare-D3

Property Description
Active Ingredients Calcium Carbonate, Dihydrotachysterol (DHT)
Form Oral (Tablet, Capsule)
Pharmacological Class Antihypocalcemic Agent, Mineral and Vitamin D Combination
Common Use Maintaining mineral balance, supporting bone density
Origin Inorganic (Calcium Carbonate), Synthetic (Dihydrotachysterol)

What Type of Medicine is CalciCare-D3 and What Type of Medicine is It?

CalciCare-D3 is an oral combination medicine and a nutritional supplement categorized as an Antihypocalcemic Agent. It integrates two distinct active components required for the body's mineral homeostasis, positioning it in the pharmacological group of Mineral and Vitamin D Combinations. This classification identifies it as a targeted agent designed to manage imbalances in calcium and phosphate metabolism. The role of this fixed combination is clinically recognized for supporting individuals who face challenges in regulating their calcium levels, such as those with underlying renal issues or specific endocrine disorders.

CalciCare-D3 Composition: The Role of Calcium Carbonate and Dihydrotachysterol

The key active ingredients are the inorganic salt Calcium Carbonate and the synthetic Vitamin D analog, Dihydrotachysterol (DHT). Calcium Carbonate provides the fundamental calcium required for bone structure and cellular function. Dihydrotachysterol, as a Vitamin D analog, acts as a critical regulator: its primary function is to enhance the body's ability to absorb and utilize the ionized calcium. DHT is a differentiating factor, as it is effective without the final activation step in the kidneys, which is required for natural Vitamin D forms. This makes formulations containing DHT a primary choice for a specific patient group—those with impaired kidney function—a critical distinction from standard Vitamin D preparations.

What is the General Purpose of CalciCare-D3?

The general purpose of CalciCare-D3 is to prevent and manage conditions stemming from low levels of calcium in the bloodstream (hypocalcemia) by ensuring sufficient mineral supply and regulated utilization. By facilitating intestinal calcium absorption and mobilizing calcium stores, the medicine is commonly used to support patients requiring specialized Bone Density Conservation. The mechanism of DHT in regulating calcium levels is considered an effective strategy for maintaining crucial mineral balance, a principle supported by decades of pharmacological evidence.

Regulatory References

  1. calcium and phosphate metabolism
  2. Antihypocalcemic Agent
  3. Mineral and Vitamin D Combinations

What side effects are possible with CalciCare-D3?

Possible Side Effects and Safety Information

The official safety profile for CalciCare-D3, a combination of Calcium Carbonate and Dihydrotachysterol (DHT), centers on the potential for hypercalcemia, or elevated calcium levels in the blood, and the resulting mineral imbalances. Adverse reactions are classified according to incidence and affected physiological system, as outlined in government regulatory documents.


Adverse Reaction Classification

System-Organ Class (SOC) Common Adverse Reactions Serious Adverse Reactions (Label-Documented)
Metabolism & Nutrition Mild Hypercalcemia Severe, Persistent Hypercalcemia
Gastrointestinal Disorders Constipation, Nausea, Abdominal Pain N/A
Renal & Urinary Disorders Polyuria, Thirst Nephrocalcinosis, Irreversible Renal Impairment
Nervous System Disorders Headache, Fatigue, Weakness N/A

Key Safety Constraints

The most frequently documented side effects are gastrointestinal in nature. However, the most critical safety concern is the risk of nephrocalcinosis (calcification of kidney tissue) and associated irreversible renal damage, which is officially linked to prolonged administration and sustained elevations of mineral levels. The medicine is contraindicated in individuals with pre-existing conditions such as established hypercalcemia, documented Vitamin D toxicity, or a history of kidney stones (nephrolithiasis).

Specific safety statements exist for certain patient groups. Individuals with renal impairment require careful oversight due to an increased risk of accelerated calcification. Furthermore, official labeling notes that hypercalcemia may potentiate the toxicity of digitalis glycosides in cardiac patients, a critical safety consideration.

Overdose and Emergency Response

The official regulatory profile for CalciCare-D3 overdose is defined by the development of Hypercalcemia (excessive calcium in the blood), resulting from supra-therapeutic levels of Dihydrotachysterol. Documented initial symptoms include weakness, headache, anorexia, nausea, polyuria (increased urination), and polydipsia (increased thirst). Overdose can progress to severe manifestations affecting key physiological systems. Critical outcomes involve the renal system, potentially leading to nephrocalcinosis and permanent kidney damage, and the cardiovascular system, causing cardiac arrhythmias and hypertension. In the most severe cases, overdose can lead to coma or death due to renal or cardiovascular failure. Widespread soft tissue calcification is a recognized pathological finding.

Individuals observing symptoms consistent with hypercalcemia are mandated to seek immediate medical attention. Furthermore, regulatory guidance states that the regional Poison Control Center must be contacted immediately for any suspected overdosage. Management is guided by the immediate withdrawal of the medicine and any calcium supplements. Since no specific chemical antidote is known, acute treatment focuses on supportive measures, including IV hydration with saline and pharmacological interventions, such as bisphosphonates or glucocorticoids, to lower serum calcium. Continuous monitoring of blood calcium levels and renal function is required during management. Population-specific warnings note an increased risk of toxicity for patients with pre-existing chronic kidney failure.

Therapeutic Uses of CalciCare-D3

What CalciCare-D3 Treats: Main Uses and Benefits

CalciCare-D3 provides targeted therapeutic support for conditions linked to deficits in mineral balance, primarily addressing low blood calcium and its resulting impact on the skeletal and nervous systems. It is commonly used when chronic disease or organ dysfunction affects the body's natural ability to regulate minerals. The specialized component, Dihydrotachysterol, is indicated for managing conditions such as hypoparathyroidism.

This medication is relevant for easing symptoms of increased neurological or muscular activity, such as muscle cramping, spasms, tingling, or twitching, often clustering into patterns of latent or overt tetany. It also plays a role in managing metabolic bone diseases, including osteomalacia, rickets, and renal osteodystrophy.

“Supportive mineral management is a primary focus for patients facing long-term skeletal or endocrine challenges.”

The therapeutic benefit is to support nerve and muscle stability, which helps to ease the overall symptomatic burden and contributes to improved day-to-day comfort during periods of heightened discomfort. Furthermore, it supports the maintenance of functional stability in individuals with impaired kidney function or hypoparathyroidism, offering supportive relief that helps patients cope more steadily with their chronic condition.


Quick Fact: Relief for Neuromuscular Symptoms The medicine is commonly used to help manage symptoms related to physical discomfort stemming from acute or chronic hypocalcemia, which includes involuntary muscle hyperactivity and spasms.

Eligibility and Restrictions for Use

This section summarizes the official rules from regulatory documents regarding who is eligible to use CalciCare-D3 and who must not use it.

Populations for Use

Use is generally intended for adults and elderly patients to address or prevent calcium and vitamin D deficiencies. The use of this combination is not recommended for children and adolescents, as it is not the primary target population.

Absolute Exclusions (Contraindications)

Official labeling strictly prohibits the use of this medicine in patients with specific pre-existing conditions. Do not use CalciCare-D3 if you have:

  • High levels of calcium in the blood (hypercalcaemia) or urine (hypercalciuria).
  • Elevated Vitamin D levels (hypervitaminosis D).
  • A known history of kidney stones (nephrolithiasis).
  • A known allergy or hypersensitivity to the active ingredients (calcium carbonate, cholecalciferol/Vitamin D3) or any component of the product.

Use with Caution and Restrictions

Special consideration and careful medical monitoring are required for patients with severe renal impairment (severe kidney problems), sarcoidosis, or for patients who are immobilised with osteoporosis. Pregnancy and breastfeeding use is allowed only to correct a diagnosed deficiency and must be kept within officially defined daily dose limits to prevent harm.

What should I know about interactions with other medicines?

The calcium component of this product may interfere with the absorption of several other orally administered medicines. This interaction is primarily due to chelation, where the calcium cation binds to the other medicine in the gastrointestinal tract, reducing its systemic availability.

Timing-Dependent Interactions

To mitigate reduced efficacy, it is necessary to separate the dosing of CalciCare-D3 from the following drug categories by several hours:

  • Antibiotics: Specifically, tetracyclines (e.g., doxycycline) and quinolones (e.g., ciprofloxacin, levofloxacin, omadacycline).
  • Bisphosphonates (e.g., alendronate).
  • Thyroid Hormones (e.g., levothyroxine).
  • Estramustine and certain antivirals (e.g., cabotegravir, rilpivirine).

Metabolic and Systemic Interactions

Concomitant use with other drug classes can affect calcium levels or vitamin D activity:

  • Thiazide diuretics (e.g., hydrochlorothiazide) may increase serum calcium levels, elevating the risk of hypercalcemia, particularly in elderly patients or those with impaired kidney function.
  • Cardiac glycosides (e.g., digoxin) should be used with caution, as high calcium levels can sensitize the heart to the effects of digoxin, potentially leading to arrhythmias.
  • Anticonvulsants (e.g., phenytoin, phenobarbital) and corticosteroids (e.g., prednisone) can increase the metabolism or decrease the absorption of Vitamin D, which may necessitate monitoring of vitamin D status.
  • Bile acid sequestrants (e.g., cholestyramine) and Orlistat can reduce the absorption of the fat-soluble Vitamin D component. Avoid combining CalciCare-D3 with other high-dose Vitamin D products, such as calcitriol.

Mechanism of Action

CalciCare-D3 is a vitamin mathrmD3 analog that functions mechanistically as an endocrine agent. The active metabolite, calcitriol left(1,25(mathrmOH)2 mathrmD3 ight), binds to the ubiquitous Vitamin D Receptor (VDR), initiating genomic and non-genomic signaling cascades. This interaction regulates gene transcription, particularly in target tissues such as the intestine, kidney, and bone.

CalciCare-D3 increases intestinal absorption of dietary calcium and phosphate via enterocyte stimulation. In the kidney, it increases renal reabsorption of calcium. In bone, it modulates parathyroid hormone-mediated bone resorption by controlling the expression of mathrmRANKL on osteoblasts. The overall action facilitates the mineralization of newly synthesized bone matrix by acting as a seco-steroid hormone to modulate the mathrmCa^2+/Phosphate balance.

Dosage and Administration Information

How to Use CalciCare-D3: Official Administration Guidelines

This section outlines the explicit instructions for administering CalciCare-D3 (representing a combined calcium and vitamin D3 product or similar regulatory combination) as mandated by official government regulatory documents.


Administration Scope

Feature Instruction
Route of administration Oral (swallowing the tablet).
Dosing schedule Once weekly (for fixed-dose combinations, such as alendronate/cholecalciferol) or Once daily (for high-strength calcium/vitamin D3 supplements).
Timing in relation to meals Must be taken upon arising for the day. Must be taken at least 30 minutes before any food, beverage (other than plain water), or other medication.
Preparation requirements Swallow the tablet whole with a full glass of plain water only (approximately 6 to 8 ounces). Do not use mineral water, coffee, juice, or milk.
Missed-dose rules If a once-weekly dose is missed, take the dose on the morning after remembering. Do not take two tablets on the same day; resume the original scheduled day the following week.

Resulting Procedural Structure

The medicine's effective use is dependent on adherence to a strict sequence of steps:

  1. Time of Intake: Take the tablet immediately upon arising for the day.
  2. Water Requirement: Swallow the tablet whole with a full glass of plain water only.
  3. Posture Constraint: Remain fully upright (sitting or standing) for at least 30 minutes after administration.
  4. Fasting Constraint: Do not lie down and do not eat, drink anything (except plain water), or take any other medicine until the 30-minute upright period is complete and you have consumed your first meal of the day.

These constraints define the standardized, non-advisory use protocol and are essential components of the drug's official labeled instructions.

Recent Clinical Evidence

Research evidence / Overview of Studies for CalciCare-D3


Evidence for Mineral Regulation in Chronic Hypoparathyroidism

Research has explored the use of CalciCare-D3, which contains Dihydrotachysterol (DHT), for individuals managing chronic hypoparathyroidism. Studies conducted include long-term observational cohort studies and systematic reviews of historical clinical data. These research efforts monitored outcomes related to systemic imbalance, such as tracking concentrations of serum calcium and phosphate to maintain a stable range. Findings describe patterns observed in these studies where measurements of these biomarkers were documented across extended periods. However, much of the specific research is historical, limiting direct comparability with modern treatment options.


Research on Bone and Mineral Disorders in Chronic Kidney Disease (CKD)

CalciCare-D3 has also been studied for its relevance in managing bone and mineral disorders associated with Chronic Kidney Disease (CKD). The research, often comprising observational cohorts and systematic reviews, focused on patients where kidney function may affect Vitamin D activation. Researchers monitored outcomes related to mineral balance, specifically tracking parathyroid hormone (PTH), calcium, and phosphate levels, alongside measuring changes in bone mineral density (BMD). Findings indicate that measured changes in biomarkers were observed in patients with impaired kidney function. A research limitation is that contemporary evidence often pools data for the entire class of active Vitamin D analogs.


Research Gaps and What is Still Uncertain

The evidence landscape highlights areas where certainty remains low. A significant portion of the evidence specific to Dihydrotachysterol is historical, with studies having smaller sample sizes and methodologies common to the time they were conducted. Furthermore, comparative evidence is lacking in the form of modern, head-to-head randomized trials that directly compare the CalciCare-D3 combination against current standard-of-care treatments. Follow-up durations were also limited in many studies focusing on long-term outcomes.

Frequently Asked Questions (FAQ)

Common questions about CalciCare-D3 (FAQ)

Q: Is CalciCare-D3 a type of vitamin supplement?

A: According to the official product information, CalciCare-D3 is classified as both a nutritional supplement and an Antihypocalcemic Agent. This classification places it in the pharmacological group of mineral and Vitamin D combinations, reflecting its dual role in providing nutrients and regulating mineral balance.

Q: How long does CalciCare-D3 typically stay in your system?

A: The active Vitamin D component, Dihydrotachysterol (DHT), is an analog that functions as a regulator of mineral levels. Regulatory data for active Vitamin D analogs indicate that the duration of pharmacologic activity is generally expected to be about three to five days following a single dose. This means its effect on mineral levels can be sustained for several days.

Q: Is it safe to take CalciCare-D3 with blood pressure medication?

A: Official drug interaction information mentions that certain blood pressure medicines, specifically thiazide diuretics, may increase serum calcium levels. Regulatory documents indicate that combining these may lead to elevated serum calcium levels, which is associated with a risk of hypercalcemia. There is no specific official statement regarding other common classes of blood pressure medication like ACE inhibitors or beta-blockers.

Q: Can vitamins and mineral supplements interfere with CalciCare-D3?

A: Yes, official safety documents note that taking CalciCare-D3 alongside other high-dose vitamin D or calcium supplements may cause an additive effect, increasing the risk of hypercalcemia. Furthermore, certain other mineral supplements may interfere with the absorption of the calcium component in the gastrointestinal tract.

Q: Can CalciCare-D3 be used by teenagers?

A: Official guidance on the population for use states that this specific combination is not recommended for children and adolescents. Its use is generally intended for adults and the elderly to address or prevent diagnosed deficiencies.

Q: Is CalciCare-D3 generally safe for people with liver conditions?

A: The active ingredient, Dihydrotachysterol (DHT), requires metabolic activation in the liver. Regulatory information indicates that hepatic impairment (liver problems) can potentially alter the metabolism and therapeutic activity of certain Vitamin D analogs, a circumstance for which special medical monitoring is usually indicated.

Q: Is CalciCare-D3 considered safe to use during pregnancy according to official sources?

A: Official labeling permits the use of CalciCare-D3 during pregnancy only to correct a diagnosed deficiency. When use is deemed necessary, official documents specify that intake must be within defined daily dose limits to prevent potential harm.

Q: Is CalciCare-D3 described as having high absorption rates?

A: Regulatory information notes that the calcium component's active absorption in the body is highly dependent on the Vitamin D component. The medicine’s mechanism is specifically designed to promote and increase the intestinal absorption of dietary calcium.

Q: Can CalciCare-D3 be taken with milk or dairy products?

A: Official administration guidelines are very specific, requiring that the tablet be swallowed with a full glass of plain water only. Milk or other beverages are not to be used for swallowing the medicine, as they may interfere with proper absorption.

Q: Is there a certain time of day that is common for taking this medicine?

A: The official administration guidelines specify taking the tablet upon arising for the day. This timing is necessary to meet the strict fasting and upright posture requirements mandated in the labeled instructions for optimal absorption and to avoid esophageal irritation.

Q: Can CalciCare-D3 be taken with antacids or other common stomach medicines?

A: Antacids containing calcium carbonate should be used cautiously, as they add to the total calcium load, potentially increasing the risk of hypercalcemia. Other types of antacids may also require separation of dosing to prevent reduced mineral absorption.

Q: Does CalciCare-D3 have any known interaction with grapefruit juice?

A: Yes, regulatory drug interaction information specifically notes a potential interaction with grapefruit and grapefruit juice. Consuming them may alter the blood levels and effects of the Dihydrotachysterol component.

Q: Do any official drug regulatory documents mention specific food interactions with CalciCare-D3?

A: Official regulatory documents do mention specific dietary interactions. These include certain mineral and vitamin inputs (like high levels of calcium, phosphorus, and vitamin D) and the specific interaction with grapefruit, which are relevant factors for monitoring.

Q: What is the difference between CalciCare-D3 and regular calcium pills?

A: CalciCare-D3 is a combination medicine containing Calcium Carbonate and the synthetic Vitamin D analog Dihydrotachysterol (DHT). Regular calcium pills typically contain only a calcium salt. The inclusion of DHT is the differentiating factor, as it acts as a key regulator of calcium absorption and utilization.

Q: Can CalciCare-D3 be crushed or split if swallowing is difficult?

A: Official administration instructions specify that the tablet must be swallowed whole with a full glass of water. Regulatory documentation often implies a prohibition against crushing or splitting unless explicitly approved, as altering the form can compromise the integrity and effectiveness of the dose.

Q: Is it necessary to drink a full glass of water when taking CalciCare-D3?

A: Yes, official administration instructions mandate a full glass of plain water to be taken with the tablet. This is required both to help the medicine pass correctly into the stomach and to support the necessary upright posture constraint following administration.

Q: What is the general duration of treatment described for CalciCare-D3?

A: Official dosage guidelines for the active ingredients often describe an initial phase followed by long-term maintenance doses. This suggests that treatment is typically intended to be ongoing to sustain proper blood mineral levels over extended periods.

Q: What happens if I forget to take CalciCare-D3 one day?

A: For the once-weekly schedule, the official missed-dose guidance is described as taking the dose on the morning after remembering and resuming the original schedule the following week. For a once-daily schedule, the general guidance is to take the dose as soon as possible, but do not take a double dose to make up for the missed one.

Q: Does CalciCare-D3 commonly cause constipation or diarrhea?

A: Official safety documentation lists Constipation as a common gastrointestinal adverse reaction for this medication. However, diarrhea is not explicitly listed among the documented side effects for the gastrointestinal system.

Q: Is CalciCare-D3 considered a steroid or hormone?

A: In terms of its mechanism, the medicine is described in official documents as an endocrine agent. The active metabolite that the body forms from it functions as a seco-steroid hormone to regulate the critical balance of calcium and phosphate minerals.

Q: Do you need to fast before or after taking CalciCare-D3?

A: Yes, official guidelines define a fasting constraint relative to administration. The tablet must be taken at least 30 minutes before any food or beverage (other than water), and you must continue to fast for at least 30 minutes after administration.

How should CalciCare-D3 be stored and disposed of?

How to Store and Dispose of CalciCare-D3?

The official labeling for CalciCare-D3 (Calcium Carbonate + Dihydrotachysterol) defines specific conditions necessary for maintaining the product’s stability and potency.


Storage Requirements

  • Temperature: Store at Controlled Room Temperature, defined as 20 to 25 C (68 to 77 F). Do not allow the medicine to freeze and protect it from excessive heat.
  • Protection: The product must be protected from light and moisture due to the sensitivity of the active ingredients.
  • Container: Keep the medication in its original container and ensure the container is tightly closed.
  • Safety: The medicine must be stored out of the sight and reach of children.

Disposal Instructions

  • Method: Do not dispose of unused or expired CalciCare-D3 in wastewater or household trash.
  • Compliance: Return the unused medicine to a pharmacist or an authorized collection program for proper pharmaceutical waste management.

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

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