Norcal

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Norcal

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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 Norcal

Quick Facts

Property Description
Active Ingredients Calcium Borogluconate and Magnesium Phosphinate
Form Sterile Solution for Injection
Pharmacological Class Mineral Supplement; Electrolyte Replenisher
General Purpose Restores critical mineral balance (Ca and Mg)
Origin Synthetic/Derived Salts

What Type of Medicine is Norcal and What is its Composition?

Norcal is classified as a specialized combination drug and a systemic electrolyte replenisher, falling into the broad pharmacotherapeutic group of Mineral Supplements: Calcium, combinations with other drugs. The medication is presented as a sterile solution for injection, a distinctive feature that enables parenteral administration for immediate systemic effect.

Its core composition features two key active components: Calcium Borogluconate and Magnesium Phosphinate salts. These ingredients are synthetic/derived compounds formulated to provide a rapid source of essential cations. This formulation is clinically recognized for its highly bioavailable calcium component, which is critical for swift systemic correction during acute deficiencies. The two minerals are dissolved in an aqueous solution which is often stabilized to maintain the solubility of the salts.


The General Purpose of Norcal and its High-Level Action

The fundamental purpose of Norcal is to serve as a rapid mineral balance restorer, aimed at swiftly elevating circulating levels of critical electrolytes during acute metabolic disturbances, such as those that can occur during periods of high physiological demand. Its general utility centers on stabilizing patients that present with severe deficiencies, specifically hypocalcemia (low calcium) and hypomagnesemia (low magnesium).

The medicine's high-level action involves providing essential Calcium and Magnesium cations, which are vital for maintaining the body's homeostasis. Calcium is necessary for nerve transmission and proper muscle contraction, while Magnesium acts as a crucial cofactor in numerous enzymatic reactions. By delivering these minerals directly and quickly, the solution helps stabilize cell integrity and restore proper neuromuscular function, thus acting as a stabilizing intervention during acute mineral depletion.

What side effects are possible with Norcal?

Possible Side Effects and Safety Information

The official safety profile for Norcal (Calcium Borogluconate and Magnesium Phosphinate Compound) is focused on acute, serious risks primarily related to the cardiovascular system, as documented in regulatory sources such as the Summary of Product Characteristics (SPC).

System-Organ Class (SOC) Documented Adverse Reactions
Cardiac Disorders Cardiac arrhythmias, heart block, initial bradycardia, and cardiac arrest.
Nervous System Disorders Agitation, increased excitability, and muscle tremors.
General Disorders Collapse and death (particularly associated with rapid administration).

Serious Adverse Reactions and Safety Constraints

Serious adverse reactions are explicitly linked in regulatory text to critical cardiotoxic effects, often resulting from the rate of intravenous administration. The most serious officially documented outcomes include cardiac arrest, collapse, and death. Conversely, temporary swelling at the site of subcutaneous administration may occur, a reaction classified as Occasional in official documents.

Safety is formally restricted by several regulatory contraindications. The medicine is not to be used in patients with pre-existing conditions such as hypercalcaemia, hypermagnesemia, chronic kidney insufficiency, or existing circulatory/cardiac disorders. Furthermore, the label notes that the calcium component of this compound increases the effects of cardiac glycosides, heightening the risk of severe heart rhythm disturbances.

Time-related patterns indicate that cardiotoxic symptoms occur when the medicine is administered too rapidly, while delayed signs of hypercalcaemia may manifest 6–10 hours after administration.

Overdose and Emergency Response

Overdose and when to seek help

The officially documented overdose profile for this compound, containing Calcium Borogluconate and Magnesium Phosphinate, is centered on acute toxicity resulting from excessively high levels of these minerals in the blood, often associated with overly rapid intravenous administration.

Overdose manifestations, as described in regulatory documents, include specific toxic action on the heart, frequently resulting in cardiac arrhythmias or an irregular heartbeat, and potentially leading to neuromuscular dysfunction.

Severe Regulatory Outcomes
Collapse
Death (linked to rapid injection)
Cardiac insufficiency

The regulatory authorities explicitly require immediate action when signs of toxicity appear. Administration must be stopped immediately if toxic action becomes evident during the procedure. The official guidance also addresses accidental exposure: if accidental self-injection occurs, seek medical advice without delay. Doses must be carefully regulated and administered slowly to mitigate the risk of these acute, severe outcomes.

Therapeutic Uses of Norcal

What Norcal (Calcium Borogluconate and Magnesium Phosphinate Compound) Treats: Main Uses and Benefits

The compound is commonly applied in clinical settings that involve acute or unstable symptom patterns to address profound metabolic disturbances, specifically hypocalcemia and hypomagnesemia. It is relevant in conditions characterized by periods of heightened symptoms, such as parturient paresis and various forms of tetany, where it is used in settings marked by temporary physiological imbalance. It contributes to easing symptoms that create noticeable physiological strain by supporting the adjustment of critical electrolyte levels.

This injectable solution is applied across domains where short-term symptomatic support is appropriate. It may assist with managing symptoms related to heightened physiological activity, such as muscle tremors, involuntary spasms, and the severe contractions associated with tetany.

This medication is relevant for patients exhibiting dramatic loss of function, including profound weakness, incoordination, and the inability to stand (recumbency).

“It is typically applied in situations requiring temporary assistance in symptom stabilization and supports the patient during difficult episodes by easing distress.”


Quick Fact: Support for Acute Neuromuscular Signs

Therapeutic Focus Symptoms Relevant to Use
Metabolic Crisis Hypocalcemia, Hypomagnesemia, Parturient Paresis
Functional Distress Weakness, Incoordination, Recumbency
Muscle Activity Tremors, Spasms, Tetany

Regulatory References

  1. UK Veterinary Medicines Directorate

Eligibility and Restrictions for Use

Who Can and Cannot Use Norcal (Calcium Borogluconate and Magnesium Phosphinate Compound)?

This eligibility profile is defined by regulatory agencies for specific livestock species, as the product is classified as a Prescription Animal Drug.

Eligibility Scope

Classification Eligible Populations or Status
Allowed Species Cattle, Sheep, and Horses (adult and young animals).
Physiological Status Use is eligible in animals that are pregnant or lactating.
Contraindicated Populations Animals showing signs of cardiac distress (absolute prohibition).
Metabolic Contraindication Animals suffering from hypercalcaemia (excessive calcium levels).

Condition-Based Restrictions

Use is subject to caution in animals with impaired renal function or impaired hepatic function due to the mineral load. Furthermore, administration to horses is contraindicated via the intraperitoneal route. The medicine is not established or authorized for human use and is explicitly restricted to veterinary application.

These constraints define the official population parameters for Norcal use, based on governmental regulatory standards.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Regulatory documentation for the active mineral salts in Norcal (Calcium Borogluconate and Magnesium Phosphinate) defines several interaction patterns related to pharmacodynamic and physical incompatibilities. The compound is classified as having clinically significant interactions with several drug categories.

Official Interaction Statements

  • Contraindicated Combination: Intravenous calcium solutions are contraindicated with Ceftriaxone in neonates (28 days of age or younger) due to the risk of precipitate formation. This represents a formal restriction on co-administration

.

  • Cardiac Effects: Co-administration of calcium with Cardiac Glycosides (e.g., Digoxin) may result in synergistic arrhythmias. Calcium may also reduce the therapeutic response to Calcium Channel Blockers.
  • Neuromuscular Blockade: Magnesium salts have additive CNS depressant effects with CNS Depressants and can enhance neuromuscular blockade with agents such as Neuromuscular Blocking Agents.
  • Metabolic Effects: Agents that elevate calcium levels, such as Thiazide Diuretics or Vitamin D, may increase the risk of hypercalcemia when combined with the calcium component of this product.

Timing and Physical Incompatibility

Calcium solutions must not be administered simultaneously with Ceftriaxone via the same intravenous line. Furthermore, solutions containing Phosphate or Bicarbonate are physically incompatible with calcium solutions, necessitating separation in administration.

Mechanism of Action

The compound, administered parenterally, rapidly delivers Ca^2+ and Mg^2+ ions, increasing their plasma concentrations. The calcium borogluconate component provides a highly bioavailable source of Ca^2+, which is the biologically active fraction regulating cellular processes. Ca^2+ functions as a signal transducer, binding to the cytosolic protein troponin C within myocytes to trigger actin-myosin cross-bridge formation, which is the molecular pathway for muscle contraction.

Extracellular Ca^2+ is also required at the neuromuscular junction for the presynaptic release of acetylcholine, modifying nerve-muscle signaling. Furthermore, Ca^2+ acts as a cofactor for numerous enzymes in the blood coagulation cascade. The magnesium phosphinate component dissociates to Mg^2+ and phosphinate ions. Mg^2+ functions as an essential cofactor for many intracellular enzymes, including those involved in adenosine triphosphate (ATP) metabolism. At the neuromuscular junction, Mg^2+ acts as a non-competitive antagonist of calcium channels, modulating the release of neurotransmitters. The rapid systemic increase of these ions modulates membrane excitability in nervous and muscular tissues, and influences cellular energy-dependent processes throughout the body.

Dosage and Administration Information

How to Use Norcal (Calcium Borogluconate and Magnesium Phosphinate Compound): Official Administration Guidelines

Norcal, a combination of Calcium Borogluconate and Magnesium Phosphinate, is regulated for use as a sterile mineral supplement injection, primarily within veterinary medicine for treating acute mineral deficiencies in livestock (e.g., cattle and sheep). The official instructions structure its use as a rapid, short-term, acute intervention.


Administration and Dosing

The medicine is designed for parenteral administration via slow intravenous (IV) injection or subcutaneous (SC) injection. IV administration is generally noted as the preferable route. Dosing is strictly determined by the animal species. For instance, the treatment volume for cattle typically ranges from approx 400 to 800 mL, while the dose for sheep is significantly smaller, around approx 50 to 125 mL.


Procedural Requirements and Schedule

Official guidelines require specific preparation and technique. The solution must be warmed to body temperature before use to assist proper administration. Injections, particularly the intravenous route, must be given slowly. If the subcutaneous route is used, the volume should be distributed across several sites and gently massaged.

Norcal is scheduled as an as-needed (PRN) acute intervention. The label permits the repetition of the dose after a short interval, usually approx 2 to 6 hours, if the condition warrants. Due to its single-use nature and lack of preservative, any unused portion of the injectable solution must be discarded immediately after the required dose is withdrawn.

Recent Clinical Evidence

Research evidence / Overview of studies for Norcal (Calcium Borogluconate and Magnesium Phosphinate Compound)

Evidence for Use in Acute Mineral Deficiency

Research explored the use of this solution in a veterinary context, particularly in conditions associated with acute electrolyte imbalance, such as Parturient Paresis. Controlled Interventional Trials were observed in the evidence base, conducted during periods of increased symptom activity. These trials often explore the effects of the combination solution in comparison to other methods, such as solutions containing only calcium.

In these research scenarios, the main outcomes related to systemic or functional imbalance that were tracked were the concentrations of Calcium and Magnesium in the blood serum. Findings describe patterns observed in the studies, including immediate and measurable changes in these critical mineral levels during the study period. Studies also examined clinical milestones, such as when the patient was able to regain its ability to stand, which is an outcome reflecting daily functioning or activity level during the acute episode.


Focus of Studies: Short-Term Clinical and Physiological Endpoints

This part will focus on the specific parameters that researchers have prioritized, outlining the study designs (e.g., short-term comparative trials) and the acute outcomes that were assessed, such as the assessment of mobility and the initial normalization of mineral biomarkers following administration.

The existing evidence is derived from studies observing responses over defined time intervals, primarily focusing on research exploring short-term symptom changes and the correction of temporary physiological imbalance. The findings highlight changes measured during this short-term study period, showing patterns of how mineral levels evolved in the observed populations. Research highlights that follow-up durations were limited, meaning the data contributes to understanding short-term changes, and research does not determine whether an individual will respond similarly over longer periods.


What is Still Uncertain About Norcal Compound Research

This concluding section will synthesize the main evidence gaps and limitations documented in regulatory and peer-reviewed literature, including issues like small sample sizes, the lack of long-term functional data, and the restriction of studies to a specific target species.

Evidence quality varies across studies, and certainty remains low in several areas. Key limitations include that the sample sizes were modest in many interventional trials. A significant gap is the lack of research exploring outcomes beyond the immediate physiological changes; long-term effects are not fully established. Furthermore, as the evidence base is restricted to a narrow target species, comparative evidence is lacking for extrapolation to other animal groups.

Key Studies & References Product Information Database Document (SPC_138671.PDF): Veterinary Medicinal Product

Frequently Asked Questions (FAQ)

Common questions about Norcal (Calcium Borogluconate and Magnesium Phosphinate Compound) (FAQ)


Q: Is Norcal ever prescribed or used for purposes related to pain relief?

No, regulatory documents classify this medicine strictly as a Prescription Animal Drug and a mineral supplement intended for acute mineral deficiencies. It is not established, authorized, or indicated for human use or for the purpose of pain relief.

Q: Is Norcal generally considered appropriate for elderly patient populations?

No, the official regulatory profile specifies this as a Prescription Animal Drug authorized only for specific livestock species. It is not established or authorized for human use by any population, which includes elderly patients.

Q: What information is available about the compound's use in pediatric patients?

This medicine is an authorized Prescription Animal Drug and is not established or authorized for human use, including pediatric patients. Separately, an official interaction warning exists for the calcium component, specifically when combined with the drug Ceftriaxone in human neonates (28 days of age or younger) due to a precipitation risk.

Q: Does Norcal carry a risk for drug dependence or addiction?

No, official classifications for this medicine define it as a simple Mineral Supplement and Electrolyte Replenisher. It is not associated with, and does not carry, the risks of drug dependence or addiction.

Q: Are there any known long-term safety considerations for the components of Norcal?

The primary consideration noted in research reviews is the lack of long-term data on the compound. Official studies focus on short-term responses and acute use, meaning safety profiles over extended periods are not fully established by the available evidence.

Q: What is the relationship between Norcal and bone density over time?

Official research reviews focus on the immediate, short-term physiological effects of the compound, such as correcting mineral balance. The evidence base does not contain long-term functional data, meaning the long-term effects on measures like bone density are not fully established.

Q: What is the earliest general time frame users might expect to see an effect?

As an injectable acute intervention, the components are designed for rapid absorption to quickly elevate mineral concentrations in the blood. Official information indicates this action is rapid and designed to correct temporary physiological imbalance.

Q: What is the expected duration of the compound's effects in the body?

The compound is specifically designed for an as-needed, acute intervention to manage immediate mineral imbalance. Regulatory information indicates that repetition of the dose is sometimes permitted after a short interval, usually between two to six hours, if a repeated dose is permitted based on the product label.

Q: Is there a maximum time frame for which the Norcal compound is typically recommended?

The compound is clearly scheduled as an as-needed, acute intervention intended to correct temporary physiological imbalance. While its short-term use is defined, the regulatory label does not typically detail a specific absolute maximum duration of treatment.

Q: Are there specific symptoms that warrant a user to seek further medical review of side effects?

The most serious documented adverse reactions that require immediate attention are signs of cardiac arrhythmias (irregular heart rhythms), collapse, or death, especially when administration is too rapid. Official warnings state that in the event of accidental self-injection, immediate medical attention is necessary.

Q: What are the general expectations for patient monitoring when using Norcal?

Official product precautions state that administration must be performed slowly and with care. The label indicates the need to discontinue administration immediately if any signs of a toxic action on the heart become evident, as noted in the product’s official safety precautions.

Q: Are there known concerns about allergic-type reactions to the Norcal compound?

Official documents state that the compound is formally contraindicated if there is a known hypersensitivity (the medical term for an allergic reaction) to either the active ingredients or any of the inactive ingredients (excipients).

Q: Is it typical to experience mild digestive changes while using this compound?

The official product information does not list mild digestive changes as a common or documented adverse reaction for this injectable compound. Adverse effects documented in regulatory sources are primarily focused on the cardiovascular system (heart) and nervous system.

Q: Is Norcal associated with any changes in appetite or weight?

Official safety documentation, including the Summary of Product Characteristics, does not list changes in appetite or weight as documented adverse reactions to this compound.

Q: Does Norcal cause drowsiness or impact a person's ability to be alert?

Documented adverse reactions include opposing effects such as agitation and increased excitability. Furthermore, the magnesium salts are known to have additive central nervous system depressant effects if combined with other medicines that act as CNS depressants.

Q: Is Norcal known to interact with antibiotics or thyroid medications?

Regulatory information notes that calcium salts can complex with tetracycline antibiotics, a chemical process that may reduce the antibiotic's therapeutic effectiveness. However, specific interaction statements regarding thyroid medications are not typically included in the official product documents.

Q: Is there a potential for Norcal to interfere with the absorption of other vitamins (e.g., Vitamin D)?

Official interaction statements focus on the metabolic effects, noting that agents that increase calcium levels, such as supplemental Vitamin D, may increase the risk of developing excessive calcium levels (hypercalcemia). The interaction is related to metabolic balance, not physical absorption interference.

Q: Is there a known food or drink that can affect the absorption of Norcal?

According to official information, this compound is administered by injection (into a vein or under the skin), meaning it bypasses the digestive system entirely. Therefore, its absorption and immediate systemic effect are not generally affected by the ingestion of food or drink.

Q: Does Norcal affect kidney function, and if so, how is it monitored?

Official product information notes that impaired renal (kidney) function is a caution or contraindication on the label, because the magnesium component is primarily eliminated from the body via the kidneys. The label does not provide specific, official monitoring protocols for human patients.

Q: Are there high-level descriptions of how Norcal is metabolized by the body?

Official descriptions of the medicine's disposition note that it acts by rapidly increasing the circulating levels of its mineral components. The magnesium portion is primarily eliminated from the body by the kidneys (via urine), while the calcium is integrated into the mineral cycle.

Q: How quickly is Norcal typically cleared from the system?

Official product information notes that the magnesium component is primarily eliminated from the body by the kidneys (excreted via the urine). However, a specific, detailed clearance time (half-life) for the entire compound is not consistently specified in the regulatory labels.

Q: What organizations regulate the use and safety of Norcal?

Regulation of this compound is managed by governmental bodies responsible for veterinary medicines. These organizations include the Veterinary Medicines Directorate (VMD) and the European Medicines Agency (EMA) in Europe, and the Food and Drug Administration (FDA) in the United States, which lists the product via DailyMed.

Q: Are there generic or alternative names for the Calcium Borogluconate and Magnesium Phosphinate Compound?

This compound, chemically defined as Calcium Borogluconate and Magnesium Phosphinate Compound, is marketed under several veterinary brand names, including NORCALPHOS and CMPK Solution. It is broadly classified as a systemic electrolyte replenisher in official documents.

Q: Is Norcal considered a controlled substance in any jurisdiction?

No, official classifications for this medicine define it as a simple Mineral Supplement and Electrolyte Replenisher. It is not listed as a controlled substance by regulatory agencies such as the DEA or similar bodies.

Q: Does the compound contain any dextrose or sugar components?

Yes, regulatory documents list Dextrose Monohydrate or Glucose Monohydrate as an ingredient in the injectable solution. This component is included to provide an additional energy source along with the mineral salts.

Q: Does the product have a clearly defined list of excipients or inactive ingredients?

Yes, regulatory documents and product information sheets explicitly list the excipients, or inactive ingredients. These commonly include Boric Acid, which helps maintain the solubility of the calcium salt, and sometimes Chlorocresol as a preservative.

Q: Why is the calcium provided in the borogluconate form instead of a standard salt?

Official documents explain that the borogluconate formulation is used because it ensures high solubility of the calcium salt in the solution. This allows the compound to provide a highly bioavailable source of calcium ions that can be rapidly introduced into the system for acute correction.

Q: What does 'Phosphinate Compound' mean in patient-friendly language?

The 'Phosphinate Compound' refers to a soluble salt, often Magnesium Hypophosphite, included in the formula. Its purpose is to act as a readily available source of two critical electrolytes, magnesium and phosphorus ions, to quickly restore their levels in the circulation.

Q: How does Norcal compare to calcium chloride in terms of safety and use?

Both calcium chloride and the borogluconate form are used for acute mineral correction. However, the borogluconate compound is often formulated to be less irritating to surrounding tissue than calcium chloride, a factor that influences the choice of administration route (e.g., subcutaneous injection).

How should Norcal be stored and disposed of?

How to Store and Dispose of Norcal (Calcium Borogluconate and Magnesium Phosphinate Compound)

Official regulatory guidelines dictate specific conditions for storing and disposing of this product to ensure stability and safety.

Storage Requirements

  • Temperature: Store the product between 15 C and 30 C (59 F and 86 F). Protect the solution by ensuring it is kept from freezing.
  • Handling and Stability: The solution should only be used if it is clear. Since the product contains no preservative, any unused portion remaining in the container must be discarded immediately after the first use.
  • Safety: The container must be kept tightly closed and stored out of the reach of children.

Disposal Instructions

Disposal must adhere to environmental regulations. Contents and the container must be disposed of at an approved waste disposal plant. Users must take care to avoid release to the environment and retain contaminated wash water according to local protocols.

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

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