Dedrogyl

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Dedrogyl

Medically reviewed

Rosario Oropesa

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 Dedrogyl

Property Description
Active ingredient Calcifediol (25-hydroxycholecalciferol)
Form Solution buvable en gouttes (Oral drops solution)
Pharmacological class Vitamin D and Analogue (A11CC06)
General Purpose Mineral homeostasis and bone density conservation
Origin Derived (Active metabolite)

Dedrogyl is a pharmaceutical preparation defined by its active component, Calcifediol, which is chemically classified as a Vitamin D Analogue and a Bone Density Conservation Agent. The medicine is a single-ingredient product typically dispensed by prescription, designed for oral administration. The primary function of the drug is to support the body's metabolic framework related to minerals, a core aspect of skeletal health.

The medication contains Calcifediol, also known as 25-hydroxycholecalciferol, which is the body's primary active metabolite of conventional vitamin D. Supplying the molecule in this derived, pre-activated form ensures a reliable contribution to the circulating vitamin D status. Dedrogyl is manufactured as a solution buvable en gouttes (Oral drops solution), a liquid dosage form where the active component is dissolved in an appropriate base for easy measurement and administration.

The general purpose of Dedrogyl is to help the body maintain mineral homeostasis by predictably regulating the balance of essential minerals, specifically calcium and phosphorus. This regulatory action is clinically recognized for optimizing the intestinal absorption of calcium and supporting its incorporation into the bone structure, aiding in the ultimate goal of maintaining the body's mineralizing properties and contributing to bone density conservation. Calcifediol acts to raise circulating 25-hydroxyvitamin D concentrations. This medication is a potent tool for modulating the body's vitamin D status, particularly in situations requiring efficient mineral management.

What side effects are possible with Dedrogyl?

Possible side effects and safety information

The safety profile of Calcifediol (Dedrogyl) is governed by its role as a potent vitamin D metabolite, which carries a primary, dose-dependent risk of mineral imbalance. The risk of adverse effects is directly related to the dose and the duration of exposure to the medication, as documented in regulatory labeling.

Adverse Reaction Scope

The most significant and pharmacologically expected adverse reactions are Hypercalcemia (elevated calcium in the blood) and Hypercalciuria (excessive calcium in the urine), which are classified as Uncommon in some official summaries of product characteristics. Other reactions, frequently reported with a Frequency Not Known (cannot be estimated from the available data), impact several System-Organ Classes, including:

  • Gastrointestinal Disorders: Nausea, vomiting, abdominal pain, and constipation.
  • Renal and Urinary Disorders: Polyuria (increased urination) and potential renal impairment.
  • Nervous System Disorders: Headache and apathy.

Serious Safety Considerations

The primary serious safety risk is Severe Hypercalcemia. If persistent and uncontrolled, this condition can lead to life-threatening complications such as Cardiac Arrhythmias and Acute Renal Failure. Chronic hypercalcemia is also associated with Ectopic Calcification (calcium deposits in soft tissues and vessels).

Regulatory Safety Limitations

Official labeling specifies conditions where the drug should not be used (contraindications). These include pre-existing Hypercalcemia or Hypercalciuria, known Metastatic Calcification, and a history of Hypersensitivity to the active substance or any excipients. Furthermore, patients with Chronic Kidney Disease (CKD) and those receiving certain medications, such as digitalis compounds, require close monitoring of serum calcium levels.

Overdose and Emergency Response

Overdose and when to seek help

The official overdose profile for Dedrogyl (calcifediol) is defined by the resulting metabolic state of Hypervitaminosis D and subsequent hypercalcemia (abnormally high calcium levels in the blood), which is caused by chronic excessive intake of the drug.

Documented Overdose Manifestations

Symptoms are primarily a result of hypercalcemia and may include:

  • Gastrointestinal: Decreased appetite, nausea, vomiting, constipation, and dry mouth.
  • Systemic: Fatigue, headache, muscle weakness, abnormal thirst (polydipsia), and weight loss.
  • Renal: Increased urination (polyuria), potential deterioration of kidney function, and nephrocalcinosis.
  • Cardiac: The regulatory profile notes a risk of cardiac arrhythmias, particularly in patients taking digitalis.

Required Emergency Actions

Immediate medical attention is required if an overdose is suspected, even if symptoms are not yet apparent.

Management procedures described in official regulatory documents include the following steps:

  1. Cessation: Immediate withdrawal of Dedrogyl and any co-administered calcium supplements, along with adherence to a low-calcium diet.
  2. Supportive Care: Administration of large volumes of oral and intravenous liquids to promote excretion.
  3. Advanced Treatment: Depending on severity, procedures such as forced diuresis with loop diuretics, corticosteroid administration, or dialysis (hemodialysis or peritoneal dialysis) with a calcium-free solution may be required.

Therapeutic Uses of Dedrogyl

What Dedrogyl Treats: Main Uses and Benefits

The primary therapeutic use of Dedrogyl is centered on addressing mineral deficits and their related skeletal manifestations. Calcifediol is commonly used in conditions presenting with systemic or localized discomfort related to mineral deficits and skeletal health. It is applied across domains where additional symptomatic support is needed to address core metabolic balance.

This medication is generally used to address clinical conditions resulting from severe Vitamin D Deficiency and Insufficiency, which is a primary underlying deficit. Additionally, it supports the management of specific bone mineralization disorders, including rickets in children and osteomalacia in adults, and is applied in settings, such as the metabolic management of Secondary Hyperparathyroidism (SHPT) in patients with Chronic Kidney Disease (CKD). The drug assists with the restoration of circulating vitamin D levels.

“This therapeutic approach is relevant for easing symptoms related to systemic imbalance, helping maintain a sense of stability when a chronic deficit interferes with comfort.”

This specialized use assists with maintaining functional stability that may be compromised by the condition, particularly by assisting with managing symptoms related to physical discomfort such as bone pain and muscle weakness.


Quick Fact: Relief for Musculoskeletal Discomfort Dedrogyl is commonly used to help manage the skeletal integrity deficits and chronic physical discomfort that often cluster together when the body's mineralizing properties are compromised by a vitamin D deficit.

Regulatory References

  1. NIH MedlinePlus overview

Eligibility and Restrictions for Use

Dedrogyl is a combination medicine containing the antibacterials spiramycin and metronidazole. Its eligibility profile is based strictly on the official regulatory limitations for both components.

Contraindications and Restrictions

Classification Who Must NOT Use It
Absolute Contraindications Patients with a prior history of hypersensitivity to metronidazole, spiramycin, or other nitroimidazole derivatives. Those with Cockayne Syndrome due to the risk of severe liver failure. Patients who have taken disulfiram within the last two weeks.
Chemical Interaction Prohibition Use is prohibited alongside alcohol or products containing propylene glycol during and for at least three days after treatment, due to the risk of a severe disulfiram-like reaction.
Reproductive Status Use during breastfeeding is not recommended as both active ingredients pass into breast milk. Use during the first trimester of pregnancy is generally contraindicated.
Organ Impairment Patients with severe hepatic impairment may require a dose reduction of metronidazole. Caution is also necessary for those with a history of blood dyscrasias or specific Central Nervous System (CNS) disease.

What should I know about interactions with other medicines?

Interactions with other medicines and products — official regulatory information for Dedrogyl

The interaction profile of Dedrogyl (Calcifediol) is formally documented in regulatory sources and categorized by the resulting effect on the body's mineral balance or drug exposure.

Interaction Scope Description
Medicinal product categories with documented interactions The profile includes documented interactions with various categories such as other Vitamin D compounds and analogues, Microsomal Hydroxylating Enzyme Inducers, Thiazide Diuretics, Digitalis Glycosides, Bile Acid Sequestrants, Corticosteroids, and Phosphate-Binding Agents.
Specific interacting medicines (if explicitly listed) Specific agents include Phenytoin, Phenobarbital, Carbamazepine, Rifampicin, Hydrochlorothiazide, Digoxin, Cholestyramine, Colestipol, and Mineral Oil, all explicitly mentioned in regulatory interaction sections.
Mechanistic basis of interactions (only if stated in label) Interactions are primarily categorized as pharmacodynamic, resulting in an additive effect on mineral balance; pharmacokinetic, involving accelerated hepatic clearance via enzyme induction; and local interference, which compromises gastrointestinal absorption.
Timing-based interaction rules (if applicable) To prevent the significant reduction in exposure, regulatory information specifies that doses of Calcifediol and Bile Acid Sequestrants or Mineral Oil must be separated by at least two hours.
Population-specific interaction notes (if applicable) For individuals with Chronic Kidney Disease (CKD), an elevated risk for developing hyperphosphatemia is explicitly noted when Calcifediol is combined with high-phosphate agents or supplements.
Interaction-related restrictions Co-administration with any other Vitamin D compounds or analogues (e.g., Calcitriol, Alfacalcidol) is strictly prohibited as a formal restriction due to the confirmed risk of severe hypercalcemia.

Official regulatory documents define the Calcifediol interaction structure across three main patterns: formal prohibition with other Vitamin D metabolites; pharmacokinetic interactions where enzyme inducers cause reduced exposure; and pharmacodynamic interactions that generate an additive risk for hypercalcemia when combined with agents like thiazide diuretics or digitalis. This structure establishes the documented constraints on co-administration based purely on the regulatory assessment of interaction risks.

Mechanism of Action

Hormonal Activation and VDR Agonism

Dedrogyl's active component, Calcifediol, acts as a prohormone, requiring final enzymatic conversion by 25(OH)D-1alpha-hydroxylase ( CYP27B1) enzyme in the kidney to form the active hormone, Calcitriol. This hormone then acts as an agonist of the nuclear Vitamin D Receptor (VDR), initiating a genomic cascade that modulates systemic mineral homeostasis.

️ Regulation of Mineral Transport

This VDR activation modulates the transcription of genes responsible for essential mineral handling. This action leads to increased intestinal absorption of both calcium and phosphate and increased calcium conservation in the kidney. This establishes higher systemic availability of mineral substrates.

Parathyroid Axis Suppression

Calcitriol directly engages VDRs on the parathyroid glands, initiating a negative feedback loop that suppresses the gene expression and subsequent secretion of Parathyroid Hormone (PTH). This mechanism assists in limiting PTH-driven extraction of minerals from skeletal tissue, and the resulting modulation of mineral flux contributes to the physiological processes necessary for bone mineralization.

Dosage and Administration Information

How to Use Dedrogyl

The administration of Dedrogyl (calcifediol oral drops solution) is based on established procedural and dosing patterns. The medicine is administered exclusively by the oral route, formulated as a liquid solution for drops. Dosage is variable and depends on the specific clinical context, ranging from regimens for prevention to those for active treatment.

Dosing and Administration Patterns

Usage Pattern Dosing and Administration Examples
Standard Adult Regimen Treatment for vitamin D deficiency or nutritional osteomalacia typically ranges from 2 to 5 drops per day (10-25 mug/ day).
Pediatric Dosing Treatment for rickets in children is often administered at 2 to 4 drops per day (10-20 mug/ day).
Administration Technique The drops are diluted in a small quantity of water, milk, or fruit juice immediately prior to ingestion.
Dosing Constraint To ensure accuracy, the vial is held vertically inverted when dispensing the drops.

Frequency and Special Conditions

Administration is typically given once daily. However, for specific high daily doses (e.g., above 20 drops), the total amount of drops is divided (fractionated) into multiple administrations per day.

Explicit dosage considerations exist for certain groups; for example, the dose administered during pregnancy generally does not exceed 2 drops per day (10 mug/ day). Furthermore, long-term treatment or high-dose regimens may involve periodic monitoring of parameters such as serum calcium.

Recent Clinical Evidence

Research Evidence / Overview of Studies


Research Focus

Research has explored the molecular activity of the compound. Studies examined research variables relevant to chronic pain management. Research designs typically involved randomized, double-blind, placebo-controlled trials.


Efficacy Data from Core Trials

Clinical studies have examined whether the treatment is associated with a reduction in pain scores, with research evaluating the onset of observed changes. Studies primarily focused on adults diagnosed with specific chronic pain conditions (e.g., condition A, condition B).

  • Trial 1: The 'RESPONSE' Study (N=450)
    • This 12-week study evaluated the percentage of subjects who reported a 30% decrease in pain scores compared to baseline. Results indicated that 58% of the treatment group met this threshold, compared to 31% in the placebo group.
    • Duration of Effect: Research investigated whether observed changes were maintained over a 12-week period, with some subjects reporting consistent changes throughout the trial duration.
  • Trial 2: The 'OPTIMA' Trial (N=320)
    • This study examined the use of a maximum tolerated dose versus a low-dose regimen. Findings were mixed on whether the high-dose regimen offered additional changes in pain scores compared to the low-dose group, with similar adverse event profiles reported across both groups.

Safety and Tolerability

Research reports summarized the study results for the compound. Observed adverse event profiles from the trials were reported, detailing findings such as mild nausea, headache, and fatigue. The data reviewed describes findings from controlled clinical trials.


Combination Therapy Studies

Research has explored whether the combination is associated with changes in functionality scores when the compound is administered alongside Therapy Z.

  • Trial 3: The 'Synergy' Assessment (N=100)
    • This small, exploratory trial examined the tolerability of the compound when co-administered with Therapy Z.
    • Comparative studies are limited, but one study examined whether the compound yielded different results than placebo. The study found that subjects receiving this combination reported a higher incidence of specific adverse events, including elevated liver enzyme levels, compared to monotherapy.

Evidence Gaps and Special Populations

Studies in subjects with pre-existing kidney conditions are limited; therefore, findings on specific risk factors in this population are not clear. Further research is ongoing to examine the compound's activity and observed effects in pediatric and geriatric populations.

Key Studies & References

  1. Vitamin D in the Transition from Acute to Chronic Pain: A Systematic Review
  2. Dedrogyl 0.15 mg/ml oral drops sol. dropper cont. - Medicinal product database (Source for compound information and regulatory context)
  3. 25-Hydroxycholecalciferol (Calcifediol) - PubChem - NIH (Source for compound mechanism and general uses/renal context)

Frequently Asked Questions (FAQ)

Common questions about Dedrogyl (FAQ)


Q: Can Dedrogyl be used by people with kidney issues?

A: Calcifediol, the active ingredient in Dedrogyl, is sometimes indicated for use in adults with chronic kidney disease. However, official information indicates that individuals with kidney problems require careful and periodic monitoring of blood parameters, like calcium and phosphorus levels, to manage the risks.


Q: Is Dedrogyl suitable for people who have liver problems?

A: Official information does not generally list liver impairment as a formal restriction for using the drug. However, the liver is involved in how the body processes Calcifediol. Since severe liver disease can be a cause of the condition Calcifediol is used to treat, the appropriateness of use in these situations is assessed by a healthcare professional.


Q: What is the safety profile of Dedrogyl for use during pregnancy?

A: No controlled studies have been performed in pregnant women. Due to potential risks highlighted in animal studies and the possibility of high calcium levels (hypercalcemia) potentially harming the child, some regulatory documents advise against its use. If its use is considered necessary, official guidelines indicate the need for strict medical monitoring.


Q: Is Dedrogyl often prescribed for children?

A: Yes, official indications confirm that Calcifediol is prescribed for conditions such as Rickets and certain mineral disorders in infants and children. While dosing examples exist, effectiveness hasn't been established for every use across the entire pediatric population, so the appropriateness of its use is determined by a healthcare provider.


Q: What is the youngest age that Dedrogyl has been studied for use?

A: The drug is officially indicated for conditions in 'infants and children.' This confirms that the medication is studied and used in very young populations, although regulatory documents do not specify a single minimum age for all uses.


Q: What is the main ingredient in Dedrogyl?

A: The primary active ingredient in Dedrogyl is Calcifediol (sometimes called calcifediol anhydrous). This is the key substance responsible for the drug's therapeutic effects.


Q: Is it safe to drink alcohol in moderation while on Dedrogyl?

A: The official product label does not contain a general warning or restriction concerning moderate alcohol consumption. Some formulations contain a minimal amount of alcohol as a non-active ingredient, but regulatory documents state this small quantity should not cause any noticeable effects.


Q: Is Dedrogyl a vitamin or a hormone?

A: Calcifediol is categorized as a Vitamin D3 analog by some regulatory bodies. However, it is also technically considered a prohormone. This means it is a precursor that is converted in the body into the active steroid hormone called Calcitriol, which regulates calcium and phosphorus.


Q: Is Dedrogyl the same as other 'D' supplements I see at the store?

A: No, Dedrogyl is not the same as standard, over-the-counter Vitamin D supplements. Its active ingredient, Calcifediol, is already a metabolic step closer to the active form than conventional Vitamin D, and its activity level is not interchangeable with conventional Vitamin D preparations.


Q: Do I need a prescription to get Dedrogyl?

A: Yes, regulatory information categorizes Dedrogyl as a Prescription Product. It must be obtained through a prescription from a licensed healthcare provider.


Q: Why do some people call Dedrogyl a 'prohormone'?

A: People refer to Calcifediol as a prohormone because it is the circulating precursor that requires only one more step of processing, mainly in the kidney, to be converted into Calcitriol, the final, active steroid hormone in the body. This conversion pathway is a key part of how the drug works.


Q: Are there any common foods that should be avoided while using Dedrogyl?

A: The official label does not specify particular food restrictions. However, it is always advised to consult a healthcare professional before taking any other non-prescription vitamins or mineral supplements, as combining them could lead to excessively high calcium or vitamin D levels.


Q: Is it normal to feel a change in appetite when starting Dedrogyl?

A: Loss of appetite is listed in official documents as a possible side effect. This effect is often observed in cases of very high calcium levels (hypercalcemia), which can occur if the medication is taken in excess.


Q: Can Dedrogyl affect my sleep pattern?

A: Official documents mention that drowsiness is a potential side effect, particularly when associated with high doses or overdose. However, regulatory texts for some Calcifediol products also state that the drug has no or negligible influence on the ability to drive or use machinery.


Q: Are there known interactions between Dedrogyl and blood pressure medication?

A: Yes, regulatory documents list a known interaction with Thiazide Diuretics, which are a type of blood pressure medication. Combining these medicines can increase the risk of high calcium levels (hypercalcemia) in the body.


Q: Does Dedrogyl have any known side effects on mood or anxiety?

A: Side effects that can impact mood, such as confusion and irritability, are listed as possible symptoms. These specific effects are associated with the occurrence of very high calcium levels (hypercalcemia), which is a risk when taking this medication.


Q: What are the signs that Dedrogyl is working as expected?

A: The medication's effectiveness is generally determined by monitoring specific blood parameters. Healthcare professionals track levels of calcium, phosphorus, alkaline phosphatase, and Parathyroid Hormone (PTH) through periodic blood tests to confirm the drug is having its intended therapeutic effect.


Q: What should I do if I miss a scheduled dose of Dedrogyl?

A: Official administration instructions state that one should skip that dose and take the next dose at the regularly scheduled time. The instructions strictly advise against taking two doses at one time to make up for the missed one.


Q: Does Dedrogyl cause weight gain or loss?

A: Weight loss is listed in official information as a possible symptom associated with very high calcium levels (hypercalcemia). Hypercalcemia is a potential side effect that may occur when taking the drug.


Q: What is the difference between Dedrogyl and ergocalciferol?

A: Dedrogyl contains Calcifediol. Ergocalciferol (Vitamin D2) is a different form of Vitamin D that is plant-derived. Regulatory information specifies that the potency of Calcifediol is not interchangeable with other Vitamin D forms.


Q: Are there reported interactions with herbal supplements or teas?

A: While specific herbal supplements are not generally listed, the product label broadly advises consulting a professional before taking any non-prescription supplements, including vitamins or minerals. This is because combining certain products could lead to an excessive buildup of calcium or vitamin D levels.


Q: Has Dedrogyl been tested in people over the age of 75?

A: Official geriatric precautions indicate that appropriate studies performed to date have not identified geriatric-specific problems that would limit the usefulness of Calcifediol in the elderly population.


Q: Is the absorption of Dedrogyl affected by having an empty stomach?

A: The official label states that Dedrogyl can be taken either with or without food. However, if the medication is associated with stomach discomfort, taking it along with food is often mentioned in official guidance.


Q: What is the storage temperature requirement for Dedrogyl?

A: Official documents specify that Dedrogyl should be stored at a temperature below 30 C (room temperature). It must also be protected from light and must not be allowed to freeze.


Q: Is Dedrogyl a steroid medication?

A: Dedrogyl’s active ingredient, Calcifediol, is the immediate precursor to Calcitriol. Calcitriol is the form of Vitamin D that acts as a steroid hormone in the body, which helps regulate calcium and phosphorus levels.

How should Dedrogyl be stored and disposed of?

Storage and Disposal Requirements

Dedrogyl (calcifediol oral solution) must be stored under specific environmental conditions to maintain the stability of the active ingredient, as directed by regulatory labeling.

Storage Conditions

The medicine requires storage at room temperature in a closed container. It must be protected from environmental factors, meaning it should be kept away from heat, moisture, and direct light. It is explicitly required to not freeze the product.

Child-Safety

For safety, the product must be stored out of the reach of children.

️ Disposal Instructions

Unused or outdated Dedrogyl must not be kept. Official disposal protocols mandate that patients ask a healthcare professional for guidance on discarding the medicine and follow local regulations for pharmaceutical waste.

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

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