Acido Ascorbico

Quick links to important sections

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 Acido Ascorbico

Property Description
Active ingredient Ascorbic Acid / Sodium Ascorbate
Form Tablet, capsule, oral solution, injection
Pharmacological class Water-soluble vitamin, Antioxidant
Common use Prevention and treatment of deficiency
Origin Essential micronutrient, typically synthetic

Acido Ascorbico: Definition, Identity, and Classification

Acido Ascorbico is the official chemical name for Ascorbic Acid, widely recognized as Vitamin C, classified as an essential micronutrient that the human body cannot synthesize itself. It belongs to the water-soluble vitamin class within the pharmacological taxonomy. This substance is clinically recognized for its crucial involvement in maintaining overall health. The medicinal entity acts as a potent antioxidant and a necessary cofactor. Its salt derivative, Sodium Ascorbate, is a common active ingredient in pharmaceutical formulations, distinguished by its less acidic profile, which can enhance patient gastrointestinal tolerance compared to the pure acid form.


Composition, Forms, and General Purpose

The product is predominantly a single-ingredient product, containing either Ascorbic Acid or Sodium Ascorbate within an aqueous base/vehicle or solid excipients. The general purpose of administering Acido Ascorbico is to prevent and correct deficiency and to support essential metabolic functions across multiple systems. It is widely recognized for its contribution to the body’s healing process and immune function. The availability of the compound in various dosage forms, including the standard tablet and capsule for the oral route, alongside specialized forms like chewable tablets and liquid oral solution, allows for administration across various patient groups.

What side effects are possible with Acido Ascorbico?

Possible Side Effects

Ascorbic acid (Vitamin C) is generally considered safe when taken at recommended dietary allowances. However, consumption of high doses (typically over 2,000 mg/day for adults) can lead to side effects, primarily affecting the gastrointestinal and renal systems.

Common Side Effects (High Doses)

System Side Effects
Gastrointestinal Diarrhea, nausea, vomiting, abdominal cramps, heartburn, flatulence.
Central Nervous System Headache, dizziness, fatigue, flushing, difficulty sleeping.

Serious Side Effects and Precautions

  • Kidney Stones (Nephrolithiasis) and Nephropathy: High, prolonged doses can increase the excretion of oxalate in the urine, a breakdown product of ascorbic acid, which may lead to the formation of calcium oxalate kidney stones. Patients with pre-existing renal disease or a history of kidney stones are at increased risk.
  • Hemolysis: Individuals with the rare inherited condition Glucose-6-Phosphate Dehydrogenase (G6PD) deficiency are at risk of developing severe red blood cell breakdown (hemolysis) when taking high doses of ascorbic acid.
  • Iron Overload: Ascorbic acid enhances the absorption of dietary iron. High doses should be used with caution in individuals with conditions that cause excessive iron accumulation, such as hemochromatosis.

Interactions and Interference

Ascorbic acid may interact with certain medications and interfere with laboratory test results:

  • Warfarin: Large doses of Vitamin C may reduce the effect of the anticoagulant warfarin (a blood thinner), potentially increasing the risk of clotting.
  • Aluminum-Containing Antacids: Ascorbic acid may increase the absorption of aluminum from antacids, which can be harmful to people with kidney impairment.
  • Laboratory Tests: It can interfere with tests based on oxidation-reduction reactions, such as blood and urine glucose, creatinine, and occult blood tests, leading to false readings.

Overdose and Emergency Response

Overdose and when to seek help

Official regulatory information describes that an overdose of Acido Ascorbico (Vitamin C) is generally associated with low acute toxicity in healthy individuals, as the body excretes excess amounts. However, high doses, specifically those exceeding 2,000 mg (2 g) per day, are considered the basis for the Tolerable Upper Intake Level (UL) and can lead to adverse effects.

Documented Overdose Presentations

The primary documented manifestations of high intake or overdose relate to the gastrointestinal and renal systems:

  • Gastrointestinal Distress: This is the most common presentation and includes symptoms such as diarrhea, nausea, upset stomach, heartburn, and flatulence, resulting from unabsorbed drug in the intestine.
  • Kidney Stone Risk: High intake may increase the risk of developing renal calculi (kidney stones) in susceptible patients due to increased urinary acidity and the potential for oxalate and cystine precipitation.

When to Seek Emergency Help

Immediate medical help or the Poison Control Helpline must be contacted in case of any known or suspected overdose, even if no symptoms are present.

Emergency medical services (such as 911) should be called immediately if the person who has overdosed experiences severe systemic symptoms, including:

  • Collapse
  • Seizure
  • Trouble breathing
  • Inability to be awakened

Patients with renal impairment, a history of kidney stones, or conditions leading to iron overload may be at increased risk for adverse effects from large doses and should seek guidance on appropriate intake levels.

Therapeutic Uses of Acido Ascorbico

What Acido Ascorbico Treats: Main Uses and Benefits

Acido Ascorbico is commonly used for managing deficiency and supporting the prevention of clinical and subclinical deficiency states, including the severe, systemic condition known as scurvy, which is characterized by symptoms related to systemic imbalance, fatigue, gum swelling, and compromised wound healing. This therapeutic use helps support the mitigation of deficiency symptom progression and contributes to maintaining overall systemic function.

The compound is considered relevant for addressing symptoms related to structural fragility, such as unexplained easy bruising, bleeding gums, and symptoms that create noticeable physiological strain. The core indications are managing scurvy, supporting the prevention of Vitamin C deficiency, and assisting with symptoms related to iron-deficiency anemia. It supports the body in managing symptoms of vascular weakness and aids in tissue regeneration, which may assist patients during recovery from surgery, trauma, or burns.

Furthermore, it plays a role in managing certain types of iron-deficiency anemia by assisting with nonheme iron utilization, a supportive benefit applicable in contexts marked by increased discomfort or tension. It is also relevant when supportive symptom management is appropriate during periods of high metabolic stress, such as in conditions involving prolonged infection where reserves may be temporarily depleted.


Quick Fact: Relief for Structural Frailty The use of Acido Ascorbico is relevant for easing symptoms that interfere with daily comfort, specifically those tied to weak blood vessels and poor connective tissue maintenance.

Regulatory References

  1. NIH MedlinePlus overview

Eligibility and Restrictions for Use

Acido Ascorbico, commonly known as Vitamin C, is generally safe when taken at recommended dietary levels. It is an essential nutrient needed by people of all ages for normal body function, with increased requirements for specific groups such as smokers, pregnant and breastfeeding women, and those with certain chronic conditions or malabsorption issues.

However, high-dose supplementation may be contraindicated for certain individuals. It is essential to consult a healthcare provider before taking supplements, particularly high doses.

Contraindications and Precautions

Individuals Who Should Consult a Doctor
History of kidney stones (High doses increase the risk)
Glucose-6-phosphate dehydrogenase (G6PD) deficiency (High doses may cause hemolytic anemia)
Hemochromatosis or other iron-overload disorders (Vitamin C enhances iron absorption)
Thalassemia or Sickle Cell Disease
Diabetes (High doses can interfere with urine sugar testing)
People on specific medications (e.g., Warfarin, Deferoxamine, certain chemotherapy drugs, aluminum-containing antacids)
Known allergy to Ascorbic Acid

The maximum recommended daily intake (Tolerable Upper Intake Level) for adult men and women is 2,000 mg per day. Doses exceeding this limit are associated with gastrointestinal upset, diarrhea, and an increased risk of kidney stone formation in susceptible people.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Interaction Scope

Entity Official Regulatory Statement
Medicinal product categories with documented interactions Oral Anticoagulants (e.g., Dicumarol); Aluminum-containing Antacids; Oral Contraceptives (Estrogen components); Chelating Agents (e.g., Deferoxamine).
Specific interacting medicines (if explicitly listed) Dicumarol, Deferoxamine.
Mechanistic basis of interactions (only if stated in label) Gastrointestinal absorption enhancement (for Iron and Aluminum); Decreased therapeutic effect (for Dicumarol); Altered clearance/plasma exposure (for Estrogen components).
Timing-based interaction rules (if applicable) Regulatory warnings exist regarding the combination of high doses of Acido Ascorbico with Deferoxamine due to potential enhanced iron toxicity, necessitating specific administration timing restrictions.
Population-specific interaction notes (if applicable) Patients with Renal Impairment: Increased risk of aluminum toxicity when co-administered with Aluminum-containing Antacids. Patients with Iron Overload Conditions (e.g., Hemochromatosis): Increased risk of iron toxicity due to enhanced iron absorption.
Interaction-related restrictions Caution is advised with Aluminum-containing Antacids in patients with renal impairment. Caution regarding the combination with Dicumarol is documented due to the potential for a decreased anticoagulant effect.

Interaction Classifications (High-Level)

Classification Official Regulatory Statement
Interaction severity classification (as defined in official documents) Interactions are classified as clinically significant, requiring specific monitoring, timing separation, or caution due to potential for altered exposure/toxicity or reduced efficacy.
Regulatory basis (EMA / FDA / etc.) Information is based on government sources including NIH MedlinePlus and FDA DailyMed prescribing information.
Interaction-context constraints (as defined in official documents) Constraints are primarily tied to: 1) Dose size (e.g., large doses); 2) Co-administration status; and 3) Underlying patient condition (e.g., Renal Impairment, Hemochromatosis).

Resulting Interaction Structure

Official interaction statements:

  • Acido Ascorbico is documented to increase the gastrointestinal absorption of nonheme iron from both food and supplements, posing a risk of iron toxicity in individuals with pre-existing iron overload conditions.
  • Co-administration with aluminum-containing antacids is documented to increase the absorption of aluminum, which may lead to a higher risk of aluminum toxicity in patients with renal impairment.
  • The use of large doses of Acido Ascorbico is documented to decrease the therapeutic effect of certain oral anticoagulants, such as Dicumarol.
  • Acido Ascorbico is documented to increase the plasma exposure of the estrogen components of oral contraceptives.

Connection to the overall interaction profile (2–4 sentences): The regulatory documents define the interaction structure of Acido Ascorbico primarily through its documented effect on gastrointestinal absorption and its pharmacodynamic interference with the efficacy of co-administered medicines. The profile highlights specific medicines and substance categories where exposure is either enhanced or reduced, leading to official warnings and administration restrictions detailed within the regulatory labeling.

Mechanism of Action

Essential Cofactor for Connective Tissue Maturation

Acido Ascorbico functions as an enzyme cofactor, acting specifically on Fe^2+-dependent dioxygenase enzymes, such as Prolyl and Lysyl Hydroxylases. Its mechanism is to maintain the active Fe^2+ state of these enzymes, a process essential for the proper hydroxylation of procollagen and subsequent formation of the stable, triple-helical structure of mature collagen. This activity is critical for the resulting structural arrangement of connective tissue components, including blood vessels, bone, and skin, and facilitates the biosynthesis of the neurotransmitter norepinephrine.


️ Systemic Reducing Agent and Defense Against Oxidation

The core chemical property of the molecule is its ability to act as a water-soluble reducing agent (antioxidant) by readily donating an electron to neutralize destructive Reactive Oxygen Species (ROS) and free radicals. This action reduces the susceptibility of cellular components—including DNA, proteins, and lipids—to modification by oxidation. Furthermore, its reducing power facilitates the absorption of dietary non-heme iron by converting the unabsorbable ferric iron ( Fe^3+) to the readily absorbed ferrous form ( Fe^2+). This process modulates cellular redox state across all organ systems and is a factor in maintaining the function of leukocytes (immune cells), thereby influencing the cellular redox environment. This effect influences the body's assimilation of iron, which is a component of hemoglobin and numerous other enzymes involved in cellular respiration.

Dosage and Administration Information

The use of Acido Ascorbico (Ascorbic Acid) is defined by its administration route, dosage, and duration, which are specified in official prescribing information. The oral route is the standard administration method for addressing deficiency, utilizing available forms such as tablets, capsules, or oral solutions. For patients with malabsorption, severe deficiency, or an inability to tolerate oral intake, the parenteral routes (Intravenous or Intramuscular) are authorized.

Parenteral administration requires specific preparation; the concentrated solution must be diluted in an appropriate fluid, such as Saline or Dextrose, and must be administered via slow intravenous infusion. The solution must also be protected from light.

Dosing Patterns and Duration

Context of Use Adult Dosing (Typical Range) Frequency and Duration
Oral Deficiency Treatment 100 mg to 250 mg Once or twice daily for a minimum of two weeks.
Acute IV Treatment (Scurvy) 200 mg Once daily for a maximum of seven days.

The official dosage for the intravenous route is strictly limited to 200 mg per day for adults and is a short-term regimen not intended for prolonged use. For pediatric patients, the parenteral dose is adjusted based on age, such as 50 mg or 100 mg daily for younger children, reflecting the need for population-specific adjustments. Oral forms, especially liquids, may be taken with food or mixed into juice or cereal.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Acido Ascorbico

Evidence for Managing Clinical Deficiency States (Scurvy)

Research examining Acido Ascorbico (Vitamin C) for the area of research of scurvy and other severe deficiency states is historically well-documented. Early studies, including specific depletion-repletion studies and historical controlled trials, were used in research exploring the relationship between Ascorbic Acid and deficiency and subsequent symptom reversal. The evidence base for treating clinical deficiency is considered High. These studies reported consistent patterns observed in the patterns related to the change in scurvy symptoms following administration. The evidence for this therapeutic approach is historically robust.

What remains uncertain in this specific area is not the area of research, but rather the limited need for modern, large-scale randomized controlled trials (RCTs) focusing solely on treating acute deficiency. The current focus of new research is predominantly on other supportive uses and deficiency prevention.


Evidence for Supportive Use in Iron-Deficiency Anemia

Acido Ascorbico was studied for a supportive role when administered alongside iron supplements for individuals with iron-deficiency anemia. The research in this area includes systematic reviews and meta-analyses that pool data from various randomized controlled trials (RCTs). The main outcomes research examined were shifts in hematological parameters and changes in iron storage markers. Studies reported measured outcomes related to the uptake and utilization of nonheme iron from supplements. Findings were categorized as having a Moderate level of supporting evidence for this purpose.

However, the findings were mixed regarding the overall magnitude of change reported, showing high variability across different trials and populations. This evidence is limited because the follow-up durations were limited to intermediate timeframes, meaning that long-term hematological outcomes and the durability of the supportive effect are not fully established.


Research Findings for the Common Cold and Respiratory Infections

Research has extensively evaluated Acido Ascorbico for both preventing and managing symptoms associated with the common cold. This research base is primarily composed of Cochrane Systematic Reviews and meta-analyses of many placebo-controlled randomized trials (RCTs). The research examined various outcomes related to episodic or acute changes, including the frequency of cold incidence and the duration and severity of cold symptoms. Some evidence reports patterns related to symptom duration and severity, particularly in children and individuals who were under heavy, short-term physical stress during the study period.

For the general adult population, data indicate patterns related to symptom duration, but findings were mixed regarding the incidence (the risk of catching a cold). The evidence quality varies across studies, and the certainty remains low for the claim that it prevents colds in the average adult.

Key Studies & References

  1. Ascorbic Acid Injection USP (FDA Label/Monograph Example)

Frequently Asked Questions (FAQ)

Common questions about Acido Ascorbico (FAQ)

Q: Is Acido Ascorbico the same as the Vitamin C found in food?

Yes, Acido Ascorbico is the chemical name for Ascorbic Acid, which is the specific L-ascorbic acid form of Vitamin C. This is the same chemical form of the essential nutrient found naturally in fruits and vegetables.

Q: Is Acido Ascorbico classified as a prescription medicine or over-the-counter?

Acido Ascorbico is generally available for purchase without a prescription, meaning it is considered over-the-counter. However, official sources note that a healthcare professional may prescribe it for the treatment of specific medical conditions that require specialized monitoring.

Q: Why is Acido Ascorbico sometimes listed as an 'antioxidant' in health discussions?

Official information explicitly classifies Ascorbic Acid as an antioxidant. This property is due to its function in protecting the body’s cells from damage caused by certain unstable molecules called free radicals.

Q: Is the Acido Ascorbico compound stable, or can it degrade easily?

Regulatory storage requirements indicate that Acido Ascorbico is susceptible to degradation, primarily through oxidation. To maintain the product's quality, official sources require that it be protected from exposure to light, heat, and air.

Q: Are there different forms of Acido Ascorbico available (e.g., tablet, liquid, powder)?

The drug is manufactured in various forms. According to product information, these include tablets, capsules, chewable forms, lozenges, liquid drops, and specialized mineral salt forms like sodium or calcium ascorbate.

Q: What is the significance of the term 'scurvy' in the context of Acido Ascorbico?

Scurvy is defined as the disease that develops due to a severe lack of Vitamin C (Acido Ascorbico) in the diet. It is the primary condition that the drug is officially indicated to prevent and treat.

Q: Is Acido Ascorbico suitable for individuals who are vegan or vegetarian?

Acido Ascorbico, as an active ingredient, can be derived from plant sources or manufactured synthetically. The substance itself is generally considered suitable for individuals following a vegan or vegetarian diet, though specific product excipients may vary.

Q: Why do some people say Acido Ascorbico helps with 'feeling run down'?

Official medical literature notes that symptoms of a severe deficiency, such as scurvy, include lethargy, generalized fatigue, and feeling run down. Treatment with Acido Ascorbico aims to address these symptoms associated with deficiency.

Q: Can Acido Ascorbico cause kidney stones, and how common is this concern?

Regulatory warnings indicate that use of doses exceeding 2,000 mg per day can increase the risk of forming calcium oxalate kidney stones. The documented risk is related to high doses and is higher in individuals with certain risk factors.

Q: Can children use Acido Ascorbico, and is there an age limit mentioned in official documents?

Yes, Acido Ascorbico is indicated for use in pediatric patients. Official prescribing information confirms its use, with dosing and administration routes determined by the child's age, reflecting the need for population-specific adjustments.

Q: Is it normal to feel a mild stomach upset when starting Acido Ascorbico?

Gastrointestinal upset is listed in product safety profiles as a potential side effect, particularly at higher doses. These symptoms can include nausea, heartburn, abdominal cramps, and diarrhea.

Q: What happens if a person uses Acido Ascorbico for a long time?

Long-term use of doses exceeding the recommended maximum intake (2,000 mg/day for adults) is associated with documented risks, including the formation of kidney stones and potential issues related to enhanced iron absorption.

Q: Why do people confuse Acido Ascorbico with products claiming to 'boost immunity'?

Official medical information states that Ascorbic Acid supports antioxidant activity and the function of the immune system (leukocytes). This documented role is the basis for its widespread discussion and the associated claims made in general health contexts.

Q: What is the expected timeline for seeing the intended purpose of Acido Ascorbico?

When used to treat a clinical deficiency like scurvy, official sources note that improvement in symptoms is typically seen within the first 1 to 2 weeks of treatment. Complete clinical recovery frequently occurs within a few months.

Q: What common food or drinks are listed as interacting with Acido Ascorbico?

Official regulatory statements regarding drug-food interactions do not list any known common food or drinks that have documented interactions with Acido Ascorbico.

Q: How does the body process or eliminate Acido Ascorbico?

Official information indicates that Acido Ascorbico is absorbed in the small intestine. The body’s overall levels are regulated primarily through renal excretion, which means the kidneys control the amount of the substance that is eliminated.

Q: What are the documented signs of an allergic reaction to Acido Ascorbico?

Documented signs of a serious allergic reaction include hives, difficulty breathing or wheezing, and swelling of the face, lips, tongue, or throat. Official guidance advises monitoring for these symptoms.

Q: Are there official statements on Acido Ascorbico's use during breastfeeding?

Official sources confirm that Vitamin C is a normal component of human milk. Use of the drug by a breastfeeding individual, even at daily doses up to 1,000 mg, is not documented as a reason to discontinue breastfeeding.

Q: Does Acido Ascorbico interfere with any hormone-based medications?

Regulatory documents note an interaction with hormone-based medicines, such as oral contraceptives or hormone replacement therapy containing estrogen. Co-administration may lead to altered levels of the estrogen component in the blood.

Q: Is it possible to be intolerant or sensitive to Acido Ascorbico ingredients?

Official guidance confirms that patients should communicate any known allergy or sensitivity to Ascorbic Acid or any of the product's non-active ingredients to their healthcare provider.

Q: Does Acido Ascorbico have any reported interactions with herbal supplements?

Regulatory interaction guidance notes the importance of informing a healthcare professional about the use of all supplements, including herbal products, to ensure the full interaction profile is considered.

How should Acido Ascorbico be stored and disposed of?

How to Store and Dispose of Acido Ascorbico

Storage of Acido Ascorbico (Ascorbic Acid) must adhere to official regulatory conditions to maintain product stability.


Storage Requirements

Detail Requirement
Temperature Store at controlled room temperature (20 C to 25 C).
Protection Protect from light and moisture. Keep container tightly closed in the original container.
Child Safety Keep out of the reach of children.

Disposal Instructions

Unused or expired product must be handled according to local requirements. It is strictly prohibited to dispose of Acido Ascorbico via wastewater or household trash. Consult a pharmacist or local waste disposal service for guidance on proper collection and removal procedures.

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

Available in countries:

Equivalent of Acido Ascorbico found in:

A-Z Index: