Donadin

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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 Donadin

The foundational section defines Donadin as an essential agent for local surface treatment, providing rapid reference and factual facts about its identity and class.

Property Description
Active ingredient Povidone Iodine (PVP-I)
Form Topical solution (aqueous or hydroalcoholic)
Pharmacological class Antiseptic and broad-spectrum disinfectant
Common use Local infection prevention and antisepsis
Origin Synthetic polymer complex (iodophore)

What is Donadin and Its Pharmacological Class?

Donadin is a pharmaceutical preparation containing the single active ingredient Povidone Iodine (PVP-I), which places it firmly within the pharmacological class of antiseptics and broad-spectrum disinfectants. The drug is designed for external use and is typically provided as an Over-The-Counter (OTC) topical solution. Povidone Iodine is clinically recognized for its reliable action against skin contaminants, making it a standard choice for superficial wounds or skin preparation. The preparation is recognized as an effective and rapidly acting microbicide suitable for use on skin and mucous membranes.

Composition and the Nature of Povidone Iodine (PVP-I)

The product's efficacy stems from its single active ingredient, Povidone Iodine, which is a synthetic polymer complex known as an iodophore. This designation signifies that the potent element iodine is chemically bound to the polymer povidone, which dictates the preparation's origin/type and formulation as an aqueous or hydroalcoholic solution. This specific chemical design facilitates the sustained and controlled release of active iodine, a key differentiator from older iodine preparations. Donadin utilizes this formulation, commonly applied in scenarios such as initial cleansing of minor cuts, burns, or abrasions.

General Purpose: Local Infection Prevention

The fundamental therapeutic purpose of Donadin is the rapid and reliable achievement of local infection prevention through aggressive microbial load reduction. As a powerful broad-spectrum microbicide, it acts against various pathogens, including bacteria, fungi, and viruses, by causing swift oxidative damage and microbial cell disruption. This mechanism ensures thorough disinfection and antisepsis on the application site, preventing the proliferation of microorganisms. Povidone Iodine is pharmacologically supported as an effective agent for maintaining a clean surface environment, a necessary step in the management of minor wounds.

Regulatory References

  1. Povidone-Iodine Labeling

What side effects are possible with Donadin?

Possible Side Effects and Safety Information

The official safety profile for Donadin (Povidone Iodine) topical solution, as documented by regulatory authorities, classifies potential effects based on how often they occur and which body systems are involved. The most frequently documented reactions are localized and related to the site of application.

Adverse Reaction Classification

System-Organ Class (SOC) Frequency Classification Description of Reactions
Skin and Subcutaneous Tissue Rare Local irritation, transient skin discoloration, contact dermatitis, and in rare cases, chemical burns.
Immune System Disorders Uncommon to Not Known Hypersensitivity reactions, angioedema, and very rarely, severe systemic reactions such as anaphylactic shock.
Endocrine Disorders Not Known Goitre, hypothyroidism, or hyperthyroidism, primarily associated with significant or prolonged systemic iodine absorption.

Population-Specific Safety Constraints

Safety statements in regulatory labeling highlight specific constraints for certain populations. The product is contraindicated in neonates (infants under one month of age) due to the risk of systemic iodine absorption affecting the thyroid. Caution is required or use may be restricted in individuals with pre-existing thyroid diseases (e.g., manifest hyperthyroidism) due to the potential for absorbed iodine to interfere with thyroid function. Additionally, repeated application on extensive areas or under occlusion increases the risk of systemic exposure, which can lead to rare serious adverse reactions, including acute renal failure.

The use of Povidone Iodine may also interfere with subsequent thyroid function tests, potentially yielding inaccurate results.

Overdose and Emergency Response

The official overdose profile for Donadin is documented as acute iodine toxicity resulting from accidental ingestion or excessive systemic absorption through extensive or prolonged application. Regulatory information confirms that overdose may initially present with severe gastrointestinal corrosive effects, including abdominal pain, nausea, vomiting, and diarrhea, alongside systemic findings such as fever and extreme thirst.

Severe, life-threatening outcomes described in official labeling include circulatory collapse, shock, pulmonary edema, metabolic acidosis, and acute renal failure (anuria).

If the solution is accidentally swallowed, regulatory documents mandate that the individual seek emergency medical attention or call a Poison Control Center right away. Treatment is classified as strictly symptomatic and supportive, as no specific antidote is known. Management requires close monitoring of critical functions, including renal function, electrolyte balance, and thyroid function, to address systemic effects.

Population-specific considerations exist: infants and new-borns are identified as having an increased risk of developing hypothyroidism due to high iodine levels. Patients with a pre-existing history of thyroid disease also face a risk of iodine-induced hyperthyroidism in cases of systemic uptake.

Therapeutic Uses of Donadin

The primary objective of Donadin (Povidone Iodine topical solution) is to provide localized antiseptic support by managing microbial risk in conditions where the skin barrier is compromised. The solution is applied in situations where short-term symptomatic assistance is needed across acute and clinical contexts.

Donadin is commonly used to help manage the risk of infection in minor cuts, scrapes, and burns.

Prophylaxis Against Infection and Symptom Management

Donadin is commonly used in first-aid scenarios to address the immediate risk of contamination in minor superficial trauma. It helps reduce the microbial load at the injury site. A key benefit is assisting with the management of infection risk, which contributes to easing the overall symptom load by supporting tissue management following accidental injury. The solution is applied when appropriate in clinical settings for pre-operative skin preparation and in the long-term management of certain chronic skin issues, such as pressure sores or stasis ulcers.

Quick Fact: Relief for Symptoms that Interfere with Daily Functioning
Donadin is relevant for managing symptoms that interfere with daily comfort by addressing the risk of localized microbial presence in minor trauma and providing localized symptomatic support across acute episodes.

Regulatory References

  1. NIH DailyMed overview

Eligibility and Restrictions for Use

The eligibility for using Donadin (Povidone Iodine topical solution) is strictly governed by restrictions documented in official government-approved labeling, primarily due to the risk of systemic iodine absorption.

Official Eligibility Status

Classification Restricted Population/Condition
Absolute Contraindication Newborn Infants (le 1 month), due to the risk of transient hypothyroidism.
Absolute Contraindication Patients with known hyperthyroidism or other overt acute thyroid disease.
Not Recommended Pregnancy and Lactation (Breastfeeding mothers), due to the risk of iodine transfer to the fetus or infant.
Use with Caution Patients with renal impairment or kidney failure.
Use with Caution Application over large surface areas of skin or severe burns.

Official labeling allows for use in adults and older children for minor cuts and scrapes under standard Over-The-Counter (OTC) conditions. Use on large or severely damaged skin areas must be minimized due to increased systemic iodine absorption. Additionally, the medicine is contraindicated for patients undergoing lithium therapy or those with Dermatitis Herpetiformis.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Officially documented interaction patterns for Donadin (Povidone Iodine) primarily involve chemical incompatibilities at the application site and pharmacodynamic effects from systemic iodine absorption.


Incompatible Combinations and Restrictions

Co-administration with mercurial preservatives is formally contraindicated due to the risk of forming chemically unsafe compounds. The regulatory label also states that combining Donadin with biological skin substitutes (such as allogeneic cultured keratinocytes/fibroblasts) is contraindicated, as the preparation decreases the efficacy of these products through degradation. Furthermore, use with enzymatic preparations (e.g., Collagenase) must be avoided as the active ingredient can inactivate them.


Interactions with Other Topical Agents and Systemic Drugs

Donadin must not be used concomitantly or immediately after the application of other topical antiseptic agents, including Hydrogen Peroxide and Octenidine, to prevent mutual inactivation or the risk of transient dark discoloration. For systemic medications, caution is required with Lithium; frequent topical use is not recommended due to the risk of an additive effect on thyroid function.


Population and Procedural Constraints

Interaction cautions exist for specific populations: use requires special consideration in individuals with pre-existing thyroid abnormalities. Additionally, the product is formally documented to interfere with the accuracy of certain diagnostic tests, including those for thyroid function (lowered radioiodine uptake) and tests for occult blood or glucose in urine.

Mechanism of Action

The Mechanism of Non-Specific Chemical Oxidation

Donadin's action is defined by its core chemical function as a non-specific microbicide, directly targeting essential macromolecules—including proteins, lipids, and nucleic acids—within microbial pathogens. The drug operates by releasing free iodine (I2), which acts as a powerful oxidant, rapidly and indiscriminately initiating chemical modifications (oxidation and halogenation) that lead to the irreversible destruction of microbial structures and the cessation of metabolic function. This destructive chemical cascade results in the elimination of viable pathogens on the applied surface.

The Iodophore Reservoir and Onset Kinetics

The Povidone complex functions as a controlled reservoir for the active iodine, governing its rapid and sustained release. This mechanism avoids reliance on slower, receptor-mediated biological pathways, instead triggering a concentration-dependent, high-speed chemical reaction. This unique delivery system ensures the rapid engagement of the microbicidal mechanism, which establishes a state of pathogen destruction.

Mechanistic Constraints by Organic Material

The mechanism is constrained by a stoichiometric limitation where the active iodine is consumed by non-target substances. The presence of high organic loads like blood or pus diverts the free iodine from its intended microbial targets, chemically exhausting the active ingredient and functionally reducing the effective concentration required for pathogen destruction. This constraint indicates a condition under which the mechanism's destructive activity is reduced.

Dosage and Administration Information

Donadin (Povidone Iodine Topical Solution) is intended for non-systemic use, with administration routes limited primarily to topical application on the skin and mucous membranes. The usage pattern is defined by standard instructions concerning frequency, duration, and preparation.

Application and Dosing

For general first-aid application, the regimen involves applying a small amount of the 10% solution to thoroughly cover the affected minor cut or scrape. This localized dosing principle ensures full surface coverage without requiring a measured volume. In a professional context, a specific volume, such as approximately 5 mL for a surgical hand scrub, may be specified.

Frequency, Duration, and Preparation

For first-aid, application may be repeated one to three times daily. However, the standard labeling imposes a constraint on continuous self-use, limiting the duration to no more than seven days (one week). Furthermore, the solution is only to be used over small areas of the body.

Two crucial administration conditions are required: first, the solution must be allowed to dry completely on the skin before covering the area with a sterile dressing or bandage. Second, while the 10% solution is typically used full strength, specific clinical applications—such as conjunctival preparation—may require the preparation to be diluted to 5%. For children under 12, the labeling explicitly requires consultation with a doctor before application.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Donadin (Povidone Iodine)

Evidence for Use in Acute Superficial Wounds (First Aid)

Studies on Povidone Iodine (PVP-I) for minor cuts and scrapes primarily consist of short-term trials. These trials monitored outcomes such as physical discomfort and the time until the wound fully closed. Research examined changes in bacterial counts on the wound surface following application. The findings describe patterns related to microbial levels measured during the observation period. However, evidence is limited regarding the necessity of frequent re-application for these minor injuries, and the results apply specifically to the generally healthy populations studied.

Evidence for Use in Preoperative Skin Preparation (Surgical Antisepsis)

The role of PVP-I in preparing the skin before surgery has been evaluated in large randomized controlled trials (RCTs) and systematic reviews. Researchers examined whether its use could reduce the incidence of Surgical Site Infections (SSI), tracking outcomes over a typical 30-day post-operative period. Studies describe patterns where Povidone Iodine was associated with changes in bacterial counts prior to incision. When compared to other antiseptic agents, such as chlorhexidine-alcohol solutions, the findings were mixed across various surgical types, indicating that measured outcomes can vary depending on the specific procedure and antiseptic formulation used.

Evidence for Use in Chronic and Burn Wounds

PVP-I was studied for use in complex injuries like chronic ulcers and burn wounds. Trials monitored outcomes related to the reduction in wound size and eventual complete wound closure. Findings describe patterns in bacterial count changes over time. Laboratory evidence suggests that certain concentrations may be cytotoxic to specialized cells involved in healing; however, clinical trials in humans have not consistently reported impaired healing. Due to these conflicting reports and limited long-term follow-up in vulnerable tissues, uncertainty remains regarding the long-term consequences of continuous application.

Long-Term Data and Extended Follow-up in Research

The majority of research focuses on short-term outcomes. Limited information is available for long-term outcomes regarding the repeated or continuous use of PVP-I over many months. When long-term data are available, study results describe group patterns, not personal outcomes. The long-term effects on the skin barrier and sustained infection prevention are not fully established.

Key Studies & References

  1. Label: POVIDONE-IODINE TOPICAL ANTISEPTIC - povidone-iodine solution - DailyMed (FDA-supported regulatory use)
  2. Chlorhexidine versus povidone-iodine for surgical site infection prevention: an updated meta-analysis and trial sequential analysis of randomized controlled trials
  3. Large Multicenter Clinical Trial Finds that Antiseptic Containing Iodine Reduces Surgical-Site Infections in Patients with Extremity Fractures (Preoperative antisepsis comparison)
  4. Antiseptic Agents for Chronic Wounds: A Systematic Review
  5. Medical Mythology, Misconceptions, and Misinformation: Does Iodine Impede Wound Healing? (Review of cytotoxicity vs. clinical evidence)
  6. Cytotoxicity and Wound Closure Evaluation in Skin Cell Lines after Treatment with Common Antiseptics for Clinical Use (In vitro cytotoxicity data)

Frequently Asked Questions (FAQ)

Common questions about Donadin (FAQ)

Q: How quickly does Donadin usually start to work?

A: Official information describes Donadin’s action as a chemical oxidation process that leads to the rapid engagement of its germ-killing mechanism upon application to the skin. This rapid action is a result of the way the active ingredient is released from the povidone complex.

Q: Is Donadin a long-term treatment or is it used for a short time?

A: Regulatory documents describe Donadin as an antiseptic for short-term use. For continuous first-aid self-use, official labeling strictly limits the duration to no more than seven days (one week).

Q: What is the official safety classification of Donadin for use during pregnancy?

A: Official documents recommend that the medicine should only be used during pregnancy if it is strictly indicated and its use is kept to the absolute minimum. This requirement is due to the potential for absorbed iodine to affect the fetal thyroid gland, which is described in regulatory information.

Q: What is the official safety information regarding Donadin use while breastfeeding?

A: Similar to pregnancy, regulatory documents recommend that Donadin should only be used during lactation if it is strictly indicated and kept to the absolute minimum. Iodine is secreted in breast milk, and official information suggests newborns are sensitive to it.

Q: If I miss a dose of Donadin, what is the general guidance from the manufacturer?

A: General guidance documented in manufacturer instructions often describes that if a scheduled application is missed, the recommended practice is to skip the missed application and continue with the next scheduled use at the regular time. There is no instruction to apply two doses at once to make up for a missed one.

Q: What should be considered regarding Donadin use if I have kidney or liver issues?

A: Safety information indicates that individuals with kidney dysfunction or those with extensive burns may be more sensitive to the systemic absorption of iodine. While rare, high absorption can potentially lead to the impairment of kidney function.

Q: Can Donadin affect dental health or cause dry mouth?

A: For forms of povidone iodine intended for use in the mouth (such as gargles or rinses), one stated possibility is the staining of dental work. This side effect is typically associated with oral use, not the topical skin solution.

Q: What are the official recommendations for disposal of unused Donadin?

A: General regulatory guidance suggests reviewing federal, state, and local government requirements prior to disposal. In many cases, it may be discarded with solid waste in accordance with applicable local regulations.

Q: Is Donadin a generic or brand-name medicine?

A: Donadin is a brand name. The active ingredient, povidone iodine, is the generic name and is widely available under many different brand names and formulations.

Q: Can Donadin affect my sleep patterns or cause drowsiness?

A: Systemic iodine toxicity, which typically occurs from accidental ingestion or exposure of extensive areas, is documented in safety reports. In severe cases of toxicity, symptoms that can progress to delirium or stupor have been associated with it.

Q: Are there any common foods or beverages that interact with Donadin?

A: Since Donadin is a topical antiseptic, direct interaction with ingested food or beverages is generally not described. However, patients with pre-existing thyroid disorders who are sensitive to iodine may be advised by their healthcare providers to be cautious with foods high in iodine, such as kelp or seaweed.

Q: Is Donadin approved for use in children or adolescents?

A: The drug is contraindicated in neonates (infants under one month of age) due to the risk of systemic iodine absorption. For children under 12, official labeling explicitly requires consultation with a doctor before application. Some forms are approved for older children and adolescents for specific uses.

Q: Can older adults (seniors) use Donadin safely?

A: Some official documents state that there are no special recommendations for the amounts used on elderly patients. This is provided that the patient does not have other health conditions that are listed as contraindications, such as pre-existing thyroid disorders.

Q: Is Donadin considered an addictive or controlled substance?

A: Donadin is a topical antiseptic and is not classified as an addictive drug or a controlled substance. However, elemental iodine, which is an ingredient in the product, is regulated by the DEA as a List I chemical because of its use in illicit substance manufacturing.

Q: How do regulatory bodies classify Donadin (e.g., restricted use, standard prescription)?

A: For first-aid uses, Donadin (Povidone Iodine topical solution) is often classified as an Over-the-Counter (OTC) drug. However, higher concentrations or specialized forms used for surgical purposes may be restricted to prescription or hospital use.

Q: Does the efficacy of Donadin vary significantly between different patient groups?

A: Research evidence describes that findings related to the drug's activity can vary depending on the specific application and formulation used. Overall, long-term outcomes on the skin barrier and sustained infection prevention are not fully established.

Q: Does Donadin affect blood pressure or heart rate?

A: Documented case reports involving accidental ingestion or severe iodine toxicity have noted complications that can include changes such as hypotension (low blood pressure) and bradycardia (slow heart rate).

Q: Can Donadin be crushed, split, or chewed, or must it be swallowed whole?

A: Donadin is an external topical solution and is not meant to be taken by mouth (crushed, split, or swallowed). Administration is limited to topical application on the skin and mucous membranes.

Q: Are there different forms of Donadin available (e.g., tablet, liquid, injection)?

A: The drug is primarily marketed as a topical solution or liquid. However, povidone iodine formulations, in general, can also be found as ointments, creams, or sprays, depending on the intended application.

Q: What are the components or inactive ingredients of Donadin?

A: The active ingredient is Povidone Iodine. Regulatory labels list inactive ingredients which may include common substances like glycerin, citric acid, sodium hydroxide, and water, which help stabilize the product.

Q: What are the known potential risks of a Donadin overdose?

A: Accidental ingestion (overdose) of povidone iodine can cause severe effects due to iodine toxicity, including potential damage to the gastrointestinal tract, metabolic acidosis, and in severe cases, heart or kidney failure.

How should Donadin be stored and disposed of?

How to Store and Dispose of Donadin?

Donadin (Povidone Iodine topical solution) must be stored according to specific regulatory requirements to maintain its stability. The product must be kept at controlled room temperature, generally between 15 C and 30 C (59 F and 86 F).

Mandatory Storage Conditions

Storage Factor Official Requirement
Temperature Store at controlled room temperature; do not freeze and avoid excessive heat.
Protection Keep protected from light and store the container tightly closed when not in use.
Child Safety Must be stored out of reach of children.

Disposal Instructions

For unused or expired medicine, disposal must follow local regulatory requirements. Consumers are often advised to utilize a community drug take-back program. Single-use presentations, such as swabs, must be discarded immediately after a single application.

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

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