Yodofol

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Yodofol

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Medically reviewed

Laura Arias

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Yodofol

Yodofol is a combination nutritional supplement, typically provided in an oral capsule or tablet form, designed to provide the essential micronutrients Potassium Iodide (a source of iodine) and Folic Acid (Vitamin B9).

Property Description
Active ingredients Potassium Iodide, Folic Acid
Form Oral Tablet/Capsule
Pharmacological class Mineral/Vitamin Supplement
Common use Supporting metabolic function and cell division
Origin Combination drug/supplement used in various international markets

The formulation addresses the body’s critical need for both iodine and folate, which function as cofactors in numerous biological pathways. While specific brands using this pairing (sometimes referred to generically as “Iodofolic” supplements) may vary in dosage, the core purpose is consistently focused on general physiological support.

Iodine, supplied as Potassium Iodide, is an indispensable element required for the synthesis of thyroid hormones. These hormones regulate the body’s overall metabolism, growth, and neurological development.

Folic Acid, the synthetic form of folate, is equally critical. It plays a vital role in one-carbon metabolism, which is essential for the production and repair of DNA and RNA. This fundamental function makes it key to processes involving rapid cell division, such as during fetal development. This requirement is a factor for women of childbearing age.

By combining these two specific micronutrients, Yodofol is positioned as a specialized over-the-counter (OTC) supplement intended to ensure adequate intake of both iodine and folate, helping prevent common deficiencies that can impact metabolic and cellular health.

Regulatory References

  1. NIH Fact Sheet on Iodine
  2. NIH: Iodine Fact Sheet
  3. NIH Fact Sheet on Folate

What side effects are possible with Yodofol?

Possible Side Effects and Safety Information

The safety profile of Yodofol is defined by the official regulatory data for its active components: Potassium Iodide (iodine source) and Folic Acid (Vitamin B9). The information below reflects adverse reactions and limitations documented by governmental authorities.

Adverse Reaction Scope

Category Regulatory Summary
System-Organ Classes Effects are documented in the Immune System Disorders (hypersensitivity to Folic Acid), Endocrine Disorders (thyroid effects from iodine), and Gastrointestinal Disorders (high-dose effects).
Common Reactions Symptoms of Iodism (e.g., metallic taste, burning mouth, sore teeth) associated with excessive iodine intake, and less severe hypersensitivity manifestations (rash, pruritus) linked to Folic Acid.
Serious Reactions Severe hypersensitivity reactions to Folic Acid, including Anaphylactic Shock and Severe Angioedema, are officially documented as rare possibilities.

Safety Considerations and Limitations

Frequency Classification: Hypersensitivity reactions to Folic Acid are generally classified as Rare or of Not Known Frequency. Adverse effects from Potassium Iodide, such as Iodism, are typically described as dose-dependent and associated with long-term exposure.

Population-Specific Notes: Caution is officially mandated for individuals with pre-existing thyroid conditions, as supplemental iodine intake may potentially exacerbate these disorders. Use is contraindicated in patients with a known history of allergic reaction to Folic Acid.

Critical Restriction: A fundamental regulatory constraint exists for Folic Acid: it must not be used alone to treat a Vitamin B12 deficiency (Pernicious Anemia). This is to prevent the risk of masking hematological symptoms while allowing potentially irreversible neurological damage to advance.

Regulatory Safety Summary

The official safety documentation establishes a framework highlighting two primary risks: rare allergic reactions to Folic Acid and the risk of chronic toxicity or thyroid impact from excessive, prolonged iodine exposure. The overall regulatory structure emphasizes these distinct component-based risks and the crucial non-adverse event restriction regarding Pernicious Anemia.

Overdose and Emergency Response

Overdose and when to seek help: Official Regulatory Information

The official overdose profile for Yodofol, a combination of Potassium Iodide and Folic Acid, addresses the acute toxicity and serious long-term risks documented by regulatory authorities.

Overdose manifestations may include gastrointestinal disturbances such as nausea, vomiting, and diarrhea, along with symptoms of chronic iodine poisoning, known as Iodism, which presents with a metallic taste and burning of the mouth.

Immediate Actions and Severe Outcomes

Regulators mandate that immediate medical attention must be sought for acute signs of hypersensitivity, including severe shortness of breath, swelling of the face, or laryngeal edema, as these can progress to anaphylaxis or shock.

Management is primarily supportive therapy and there is no specific antidote listed for the components. If symptoms of Iodism appear, the regulatory guidance is that the product should be withdrawn.

Population-Specific Overdose Considerations

A critical regulatory constraint is that high-dose folic acid may conceal the hematologic signs of an undiagnosed Vitamin B12 deficiency (pernicious anemia), allowing severe neurological damage to progress. Furthermore, infants and the fetus are explicitly identified as the populations at highest risk for developing hypothyroidism due to excess iodine exposure, necessitating thyroid function test monitoring.

Therapeutic Uses of Yodofol

Yodofol is a combination product generally used to provide supplementary intake of Folic Acid and Iodine. This combination is commonly used to help manage symptoms related to systemic imbalance and may assist with addressing potential micronutrient gaps, particularly in individuals with increased physiological needs.

The combination of these components supports the maintenance of adequate micronutrient levels during critical life phases. This pairing is considered relevant for addressing the need for nutrient support relevant to neurological development and the physiological processes relevant to thyroid function.

This makes it relevant for conditions where functional stability becomes affected and situations involving increased physiological stress, such as during pre-conception or lactation phases. Supplementation is commonly used to help with the supportive management of nutritional factors linked to these periods.


Quick Fact: May assist with symptoms related to systemic imbalance

The use of this combined supplement provides support that helps ease the overall symptom burden associated with nutrient gaps and supports general well-being during symptomatic phases.

Regulatory References

  1. NSW Health guidance on Folate and Iodine in Pregnancy

Eligibility and Restrictions for Use

Who Can and Cannot Use Yodofol?

This section explains the population eligibility for Yodofol (Potassium Iodide and Folic Acid combination) strictly according to official regulatory documentation.

Contraindications and Absolute Restrictions

Official labeling mandates that Yodofol must not be used by certain groups. This includes individuals with a known hypersensitivity to Folic Acid, Potassium Iodide, or any non-active ingredients. Use is contraindicated in patients with untreated Pernicious Anemia or other megaloblastic anemias caused by Vitamin B12 deficiency, as the Folic Acid component can mask the characteristic hematological symptoms. Due to the iodide component, it is also contraindicated for patients with uncontrolled hyperthyroidism or thyrotoxicosis.

Population-Specific Limitations

Population Group Regulatory Eligibility Status
Renal Function Use requires caution and may be restricted in cases of severe renal impairment due to the potential for electrolyte accumulation.
Pediatric Use Standard adult formulations are generally not recommended for infants and young children; safety and effectiveness are often not established for these age groups.
Pregnancy/Lactation Folic Acid use is generally recommended for women in pre-conception and pregnancy. Iodide use is permitted but restricted, requiring specific professional direction due to potential fetal or infant thyroid effects.
Other Conditions Use is subject to caution in patients with cardiac disease, Addison's disease, or certain pre-existing thyroid conditions like multinodular goiter.

What should I know about interactions with other medicines?

Yodofol's active ingredients, Potassium Iodide and Folic Acid, have documented interaction patterns that require consideration when co-administered with certain medicinal products and substances. These interactions fall into domains that affect thyroid function, electrolyte balance, and the metabolism of specific therapeutic agents.

Interactions with the Iodide Component

The Potassium Iodide component has documented pharmacodynamic interactions with agents that modulate the thyroid axis. Co-administration with Lithium or Antithyroid Drugs may potentiate hypothyroid or goitrogenic effects. Furthermore, due to the potassium content, co-administration with Potassium-sparing Diuretics or ACE Inhibitors carries a formally documented risk of hyperkalemia (elevated potassium levels). This risk is a specific population consideration for patients with pre-existing Renal Function Impairment. The Iodide component's excretion rate may also be decreased by substances like Aminophylline, potentially increasing serum Iodide levels.

Interactions with the Folic Acid Component

The Folic Acid component is involved in interactions that alter drug exposure and efficacy. Folic Acid co-administration may decrease the plasma levels of certain Antiepileptic Drugs (AEDs), such as Phenytoin, an effect described as potentially leading to a loss of seizure control. In terms of nutrient metabolism, Folic Acid exposure is susceptible to interference from Antifolate Agents like Methotrexate and Trimethoprim, which may reduce the concentration of Folic Acid's active metabolites. Regulatory documents also note that chronic alcohol consumption may increase Folic Acid elimination and decrease its absorption.

Mechanism of Action

Yodofol is a combination agent whose pharmacodynamic effects derive from two distinct components: folic acid and potassium iodide. Folic acid, a B-complex vitamin, functions as a substrate for the enzyme dihydrofolate reductase (DHFR). Following reduction by DHFR to tetrahydrofolate (THF), this metabolite acts as a cofactor in one-carbon transfer reactions. These reactions are essential for the de novo biosynthesis of purine and pyrimidine nucleotides, as well as the methylation of various substrates. The downstream consequence is the maintenance of DNA synthesis and cellular replication integrity, particularly in tissues with high cellular turnover. The second component, potassium iodide, is actively transported into thyroid follicular cells via the sodium-iodide symporter (NIS). Once accumulated in the thyroid, iodide acts as a substrate for thyroid peroxidase (TPO), leading to its oxidation and subsequent organification into tyrosine residues on thyroglobulin (Tg). This process is a required precursor for the synthesis of the thyroid hormones thyroxine (T4) and triiodothyronine (T3). The systemic physiological modulation is the maintenance of circulating thyroid hormone levels, which regulate basal metabolic rate, protein synthesis, and general somatic growth.

Dosage and Administration Information

How to use Yodofol

The administration of Yodofol, a combination supplement containing Folic Acid and Potassium Iodide, follows standardized patterns. The medicine is consistently provided as an oral dosage unit, either a capsule or tablet, and is intended to be taken once daily.


Administration Scope and Regimen

The routine intake is set as once daily, with the standard regimen providing Folic Acid typically in the range of 400 mcg to 800 mcg, alongside 150 mcg of Iodine, derived from Potassium Iodide. This dosage alignment is consistent with the recommended daily intake for essential micronutrients in the target population. To ensure proper absorption and tolerance, the unit is generally advised to be taken with food, and should be swallowed whole with fluid.

Use is tied to specific physiological cycles. The regimen typically commences during the pre-conception phase—ideally at least one month prior—and continues throughout the pregnancy and often during the subsequent lactation period.


Special Procedural Conditions

While the standard dosing provides comprehensive support, an upward titration for the Folic Acid component is noted in specific circumstances. Individuals with a history of or increased risk for Neural Tube Defects (NTDs) may be associated with a significantly higher daily dose, such as 5 mg, to address this heightened need. The need for dose adjustment is determined by clinical factors and is an established component of the usage protocol.


Connection to the Overall Use Protocol

These instructions describe a non-complex, fixed-frequency oral regimen that is structured by the body’s physiological requirements. The usage framework is defined by the necessary duration and specific dosing for each component, ensuring a consistent approach to supplementation.

Recent Clinical Evidence

Research evidence / Overview of studies for Yodofol


Evidence for Support During Periods of Increased Physiological Need

Research has examined the role of the combination of folic acid and iodine, which forms the basis of Yodofol, in life phases that involve increased physiological strain, such as pre-conception, pregnancy, and lactation. Studies monitored outcomes related to systemic or functional imbalance, such as measuring the levels of specific nutrients. Studies monitored patterns related to maternal and infant iodine and folate status biomarkers, observing higher measurements in the supplement groups, as part of exploring outcomes related to potential micronutrient insufficiencies during these high-demand periods. The evidence for a consistent broader impact on all adverse birth outcomes remains limited and mixed, particularly when compared to single-nutrient controls. Comparative evidence is lacking from dedicated, large-scale trials that compare only the iodine and folic acid combination directly against a single-nutrient control or placebo.


Evidence Related to Fetal Neurological and Cellular Development

The two ingredients in Yodofol were evaluated in research for their distinct roles in physiological processes. Folic acid was studied to explore outcomes related to the nervous system, with research focusing on outcomes related to the incidence of Neural Tube Defects (NTDs). Historical Randomized Controlled Trials (RCTs) and vast public health data reported observations regarding the incidence of NTDs following the use of folic acid supplements. Iodine was evaluated in studies to explore its role in physiological processes related to thyroid hormone production. While research indicates patterns related to iodine supplementation and thyroid function/status biomarkers, findings were mixed regarding the long-term impact on the child's neurodevelopmental outcomes in areas with only mild-to-moderate deficiency.


Evidence Quality, Consistency, and Research Gaps

The evidence quality varies across studies and components of Yodofol. The data supporting the use of folic acid in NTD prevention are considered of high evidence level in the research landscape. Conversely, for the iodine component, the evidence quality varies across studies, particularly regarding child neurodevelopmental outcomes in areas of mild deficiency. For these endpoints, findings were mixed, suggesting that certainty remains low for some specific long-term outcomes. Furthermore, research has explored the effect of the combined supplement on specific high-risk groups, though findings often derive from larger, multi-component trials, which limits the ability to isolate the effects of the iodine and folic acid pairing. Research is ongoing to clarify these remaining uncertainties.

Key Studies & References

  1. Folate/Folic Acid Deficiency (NCBI Bookshelf Review)
  2. Folate and Iodine in Pregnancy (NSW Health Guideline)

Frequently Asked Questions (FAQ)

Common questions about Yodofol (FAQ)


Q: What is the difference between Yodofol and its active ingredient, [Active Ingredient Name]?

Yodofol is the name of the combination product that contains two active ingredients: Folic Acid (Vitamin B9) and Potassium Iodide (a source of iodine). The product, including the inactive ingredients that form the capsule or tablet, is what is known as Yodofol, while Folic Acid and Potassium Iodide are the individual components that provide the primary nutritional effect.


Q: Is Yodofol associated with long-term side effects?

Official safety documentation indicates that prolonged, high-dose exposure to the Potassium Iodide component may be associated with dose-dependent effects. For example, symptoms of Iodism (such as a metallic taste in the mouth or sore teeth) are noted as risks linked to long-term use.


Q: Is it common for doctors to adjust the dosage of Yodofol after the initial starting period?

Official guidelines for Yodofol usage establish conditions related to specific risk factors, such as Neural Tube Defects (NTDs), that call for a specific adjustment (upward titration) of the Folic Acid component dosage. This ensures the regimen supports the individual's specific needs as defined by the protocol.


Q: Can Yodofol be split or crushed if I have difficulty swallowing?

Regulatory instructions generally specify that the oral dosage unit should be swallowed whole with fluid. This supports proper administration as intended by the product information, maintaining the integrity of the capsule or tablet.


Q: What should be done if an accidental overdose of Yodofol is suspected?

Official safety documentation advises that in cases where an overdose is suspected, professional medical attention should be sought.


Q: What is the half-life of Yodofol, according to pharmacokinetics data?

According to the pharmacokinetics data found in official product information, the Folic Acid component has an approximate elimination half-life of 1.5 hours. The half-life is the time it takes for half of the substance to be eliminated from the bloodstream.


Q: Can Yodofol be used by people who don't have [specific treated condition]?

The product is officially intended for use in individuals during the pre-conception, pregnancy, and lactation phases. Its purpose is to support essential micronutrient requirements during these periods of increased physiological need, according to official indications.


Q: What is the longest period of time people typically take Yodofol?

The recommended regimen is structured around physiological cycles, beginning in the pre-conception phase. Official guidelines recommend continuing use throughout the entire pregnancy, and often extending into the subsequent lactation period.


Q: Does Yodofol cause weight gain or loss, based on official studies?

Regulatory documents detailing documented adverse reactions do not frequently list weight gain or weight loss as a reported side effect associated with the product.


Q: Why do some people experience [mild common side effect, e.g., dry mouth] with Yodofol?

Reported side effects are primarily linked to the drug's specific components. For instance, effects such as a metallic taste or burning sensation (part of Iodism) are associated with the Potassium Iodide component, while less common effects like a rash are linked to Folic Acid hypersensitivity.


Q: Does taking Yodofol require any specific lifestyle changes?

Official regulatory documentation only specifically notes the caution related to chronic alcohol consumption, as this may interfere with the elimination and absorption of the Folic Acid component. No other broad changes to diet or lifestyle are mandated by the regulatory labels.


Q: Is the severity of side effects typically dose-dependent for Yodofol?

Safety documentation describes that adverse effects linked to the Potassium Iodide component, such as Iodism, are typically considered dose-dependent and associated with prolonged exposure.


Q: Can Yodofol be taken alongside herbal remedies?

Official regulatory documentation generally advises that a healthcare professional should be consulted before taking any herbal remedies or supplements alongside this medicine. This is because some products may contain overlapping components or ingredients that interact with the drug.


Q: Is it necessary to take Yodofol with food?

Administration guidelines specifically advise taking the medicine with food. This practice is recommended to ensure both proper absorption of the active components and to maximize patient tolerance of the supplement.


Q: Is it normal to feel [vague sensation, e.g., slightly tired] when first starting Yodofol?

The official regulatory documentation does not commonly list vague sensations such as tiredness or fatigue among the documented adverse reactions to the product. Adverse reactions are defined by documented patterns of occurrence in official studies.


Q: Are there any foods or supplements known to interact with Yodofol?

Official documentation notes that chronic alcohol consumption may interfere with Folic Acid elimination. Additionally, certain types of antacids may be documented as interfering with the absorption of the Folic Acid component.


Q: What is the official safety classification of Yodofol?

Yodofol is officially classified as a Mineral/Vitamin Supplement. In many international markets, it is considered a specialized over-the-counter (OTC) supplement due to its role in supplying essential micronutrients.


Q: What happens if I stop taking Yodofol suddenly?

Regulatory documentation does not report specific withdrawal symptoms upon sudden cessation, which is typical for vitamin or mineral supplements. Discontinuing use of the supplement results in a loss of the continuous supply of the protective micronutrients it provides.


Q: Does the time of day I take Yodofol impact its effectiveness?

The regulatory instructions specify a once daily regimen. There is no specific requirement or guidance in official documents mandating a precise time of day for the medicine to be administered.


Q: Is Yodofol safe for people with known liver issues?

Official regulatory documentation advises using caution for patients with pre-existing liver or heart diseases. Individuals with such conditions are generally advised to proceed with caution, as the use of the product may require additional professional oversight.


Q: Can older adults use Yodofol safely?

Regulatory data for the Potassium Iodide component generally indicates that the medicine is not expected to cause different side effects or problems in older adults compared to younger adults.


Q: Can Yodofol cause sleep disturbances?

Official regulatory safety documentation does not commonly list sleep disturbances, such as insomnia or drowsiness, as a frequently reported adverse reaction to this product.


Q: What information is available regarding Yodofol's effect on kidney function?

Use requires caution and may be restricted in cases of severe renal impairment (kidney issues). This is due to the potential for electrolyte accumulation, specifically hyperkalemia (elevated potassium levels), which is linked to the Potassium Iodide component.


Q: Why do official documents advise caution when using Yodofol with [class of drugs, e.g., MAOIs]?

Caution is advised because the Folic Acid component may decrease the plasma levels of certain anti-seizure medications (Antiepileptic Drugs or AEDs). Furthermore, the Iodide component may increase the risk of hyperkalemia when combined with Potassium-sparing Diuretics.


Q: What if Yodofol has expired—can it still be used?

Official regulatory instruction mandates that the medicine must not be used after the labeled expiry date. This date ensures the stability and quality of the active components remain consistent with official standards.


Q: Does Yodofol affect blood sugar levels?

Regulatory documentation does not list blood sugar fluctuations as a documented common or serious adverse reaction to the product.

How should Yodofol be stored and disposed of?

How to Store and Dispose of Yodofol?

The storage and disposal of Yodofol must comply with official regulatory labeling to maintain stability and ensure safety.

Storage Requirements

Yodofol must be stored at controlled room temperature, typically between 20 C and 25 C. The product must be protected from both light and moisture (humidity).

  • Container: Store the medicine in the original container with the lid kept tightly closed.
  • Handling: Do not freeze the product, and avoid storing it in overly moist environments.
  • Child Safety: It is mandatory to keep Yodofol out of the sight and reach of children.
  • Stability: Do not use the medicine after the labeled expiry date.

Disposal Instructions

Unused or expired Yodofol should not be flushed down a toilet or drain. Disposal must be managed through official channels, such as an approved drug take-back program. If no take-back program is available, the product should be mixed with an undesirable substance, sealed in a bag, and then placed in the household trash, following government guidelines for safe disposal.

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

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