Delaro

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Delaro

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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 Delaro

Property Description
Active Ingredient Prothioconazole (Group 3/DMI) and Trifloxystrobin (Group 11/QoI)
Form Suspension Concentrate (SC)
Pharmacological Class Systemic Fungicide (Agrochemical Product)
Common Use Broad-spectrum disease control in cereals and pulses
Origin Synthetic Combination Product

Is Delaro a Medicine and What Type of Product Is It?

Delaro is a highly effective, synthetic systemic fungicide used exclusively for crop protection in agriculture; it is not a pharmaceutical intended for human use. The product is defined by its two active ingredients: Prothioconazole belongs to the Triazole (DMI) class, and Trifloxystrobin belongs to the Strobilurin (QoI) class.

This strategic dual classification is recognized for its foundational role in modern fungal disease management. The use of two components from different chemical groups—a key differentiating feature—allows Delaro to maintain its efficacy against a broad spectrum of diseases, such as rusts and leaf spots, even in high-pressure agricultural environments.

Composition of Delaro: Dual Active Ingredients and Formulation

Delaro is a combination product that contains two distinct, fully synthetic active ingredients: Prothioconazole and Trifloxystrobin. It is commonly supplied as a Suspension Concentrate (SC), a liquid formulation optimized for consistent delivery via foliar application (spraying onto the crops).

The combination of a Group 3 and a Group 11 fungicide is essential for the product’s high performance. This pairing of non-overlapping biochemical mechanisms is recognized for providing enhanced protection against the development of fungicide resistance, a critical element of long-term sustainability in crop health programs.

General Purpose and High-Level Function of Delaro

The general purpose of Delaro is to provide powerful, broad-spectrum disease control and support long-term crop yield stability throughout the growing season. The two active ingredients provide a combined effect that is both systemic and protective.

The Prothioconazole component is systemic, meaning it is absorbed by the plant to provide internal defense and curative action against existing infections. The Trifloxystrobin component provides local and surface-level preventative protection. This comprehensive, dual approach is vital for shielding plants against various fungal pathogens, which ultimately helps maximize the quality and quantity of the harvest.

What side effects are possible with Delaro?

The safety information for the systemic fungicide Delaro is structured according to chemical hazard classifications (GHS/HCS), focusing on the potential risks of occupational or bystander exposure rather than typical pharmaceutical side effect frequency. The safety profile is defined by officially documented hazard statements.

Adverse Reaction Scope and Classification

Classification Scope Details as per Regulatory Documents
Acute Hazard Categories Classified as Harmful if swallowed, inhaled, or absorbed through the skin. It is also documented to cause moderate eye irritation in some individuals.
Dermatological System Classified as a Skin Sensitizer (Category 1), meaning prolonged or frequently repeated skin contact carries the risk of causing a significant and lasting allergic skin reaction.
Specific Target Organ Risk The potential for damage to organs is officially documented, which is explicitly tied to prolonged or repeated exposure over time, particularly related to a primary metabolite.

Population-Specific and Time-Related Safety

Safety constraints apply to specific populations, as explicitly stated in the official documentation:

  • Nursing Individuals: The regulatory profile includes a caution for Reproductive Toxicity: Effects on or via Lactation, stating that the product May cause harm to breast-fed children (H362).
  • Pregnancy: Precautionary statements advise individuals to Avoid contact during pregnancy/while nursing as a safety measure.

Safety-Related Restrictions

Formal safety restrictions are in place to limit exposure: contaminated work clothing must not be allowed out of the workplace, and entry into treated agricultural areas is subject to a government-mandated Restricted Entry Interval (REI).

Connection to the Overall Safety Profile

The official safety information structures the understanding of Delaro's risks by defining them as specific chemical hazards associated with exposure, distinguishing them from common pharmaceutical adverse events. This framework formally documents the highest risks as the potential for allergic sensitivity and long-term systemic toxicity linked to repeated contact. Safety management is therefore driven by explicit regulatory boundaries concerning exposure duration and specific vulnerable groups.

Overdose and Emergency Response

Overdose and When to Seek Help — Official Regulatory Information for Delaro

Overdose Scope Description
Documented Manifestations Exposure is officially classified as harmful if swallowed, inhaled, or absorbed through the skin. Documented topical effects include moderate eye irritation and the potential for an allergic skin reaction.
Physiological Systems Affected Acute exposure affects the integumentary system and ocular system. Regulatory toxicological data indicates that internal organs may be damaged through prolonged or repeated exposure to the components.
Exposure-Related Factors Ingestion or inhalation requires immediate medical evaluation. The regulatory classification also notes the product is a skin sensitizer and an eye irritant.
Population-Specific Notes The official hazard profile includes the caution that active ingredients may cause harm to breast-fed children.
Emergency-Response Statements For ingestion, call a poison control center or doctor immediately for treatment advice. Do NOT induce vomiting unless specifically instructed by medical personnel. Contaminated clothing must be removed, and the affected area rinsed immediately with water.
When Immediate Medical Help is Required Urgent medical attention is explicitly required for any ingestion, severe eye contact, or if systemic symptoms develop following inhalation or dermal exposure.

Overdose Classifications (High-Level)

Property Description
Antidote Status No specific antidote is known or listed in the official regulatory documentation.
Treatment Approach Treatment is mandated to be symptomatic and supportive.

The official regulatory profile for this product is structured to address the dual risks of immediate local irritation and potential systemic harm following acute exposure. The absence of a specific antidote necessitates a prompt and supportive clinical response. Immediate contact with emergency services or a poison control center is the required first action to mitigate risks associated with ingestion or severe exposure scenarios.

Therapeutic Uses of Delaro

What Delaro Treats: Main Uses and Benefits

Delaro is commonly used to help with symptoms related to systemic imbalance that arise from fungal infections in crops, such as corn, soybeans, wheat, and pulses. Its use is associated with supportive functional benefit for broad-spectrum disease management across agricultural domains.

The product is applied in scenarios where symptoms create noticeable physiological strain, and is relevant for easing manifestations like necrotic leaf spots, tissue-damaging blights, and disruptive rust pustules. It is relevant for managing symptoms that interfere with physiological integrity during periods of high risk, and its design is commonly used to help with managing resistance in fungal strains. This approach helps maintain a sense of stability when symptoms are more noticeable, contributing to the crop’s functional stability and supporting yield potential, particularly when short-term symptomatic assistance is needed.

“Delaro is applied in contexts involving heightened systemic burden to support crop vitality and ease disease-related pressure.”


Quick Fact: Relief for Foliar Pathologies
Delaro is used for managing symptoms related to stress or damage caused by airborne pathogens, especially during acute or disruptive episodes of fungal growth.

Eligibility and Restrictions for Use

Who Can and Cannot Use Delaro?

Delaro is a systemic fungicide registered for agricultural crop protection and is not a human medicine. Its official eligibility profile is defined by government regulatory agencies (such as the EPA) based strictly on occupational handling and exposure restrictions for humans.


Eligibility Status for Humans (Exposure)

Classification Status According to Regulatory Label
Therapeutic Use Absolutely Contraindicated (Do not apply directly to humans or animals).
Occupational Handling Conditional Use (Only by trained workers adhering to the Worker Protection Standard [WPS] and mandatory Personal Protective Equipment [PPE] requirements).

Population-Specific Restrictions

Contraindicated Populations: The general public is contraindicated for direct exposure or application. Ingestion is prohibited.

Age-Related Restrictions: Children and minors are restricted from access to the concentrate, and their entry into treated fields is prohibited during the official Restricted Entry Interval (REI).

Pregnancy and Lactation: Regulatory classifications advise pregnant and nursing individuals to avoid contact with the product due to hazard statements related to suspected developmental harm.

Comorbidity: Individuals with known skin sensitivity or allergies to the ingredients must follow specific precautions to prevent allergic reactions.

What should I know about interactions with other medicines?

Delaro Interactions with other medicines and products

Official regulatory information from major governmental health authorities, such as the U.S. Food and Drug Administration (FDA) and the European Medicines Agency (EMA), does not include a specific human medicinal product named Delaro. Consequently, there are no official, documented drug-drug interaction statements for a human pharmaceutical product under this name in authoritative regulatory labeling.

The principles of pharmacology, which govern drug interactions, generally describe two main categories: pharmacokinetic and pharmacodynamic interactions. Pharmacokinetic interactions occur when one product affects the absorption, distribution, metabolism, or excretion of a second drug, potentially changing its concentration in the body. Pharmacodynamic interactions occur when two products affect the body in similar or opposing ways, leading to an exaggerated or diminished therapeutic effect.

Since no medicinal product label is available for Delaro, specific interacting medicinal products, defined product classes, or timing-based administration rules for patient use cannot be provided. Likewise, interaction classifications such as contraindicated or use-with-caution combinations are not defined in official human drug regulatory documents. Patients should always consult their healthcare provider and pharmacist for specific information regarding any prescribed or over-the-counter medicines.

Mechanism of Action

How Delaro Works: Dual Mechanistic Action

Delaro works by exerting a dual-action mechanism that simultaneously targets two essential, independent pathways within the targeted organism.


Modulating Cellular Energy Production

This mechanistic domain involves the inhibition of a key enzyme complex, Mitochondrial Cytochrome bc1 (Complex III). By disrupting this complex, the drug immediately halts the crucial process of cellular respiration and energy (ATP) production. This cascade directly leads to the rapid loss of metabolic activity and function in the targeted cells.


Interfering with Structural Integrity

The second domain focuses on compromising the physical structure of the targeted cell. Delaro acts as a competitive inhibitor of the C14-demethylase enzyme, which is vital for synthesizing essential cell membrane components. Blocking this step prevents the formation of a stable cell membrane and causes the buildup of toxic intermediates. This action results in the structural collapse and functional loss of the targeted cell.

Dosage and Administration Information

The use of Delaro, an agrochemical fungicide, follows protocols for crop management, focusing on standardized application rates and timing. The product is a Suspension Concentrate (SC) formulation applied to crop foliage.

Administration Protocol Summary

Feature Standard Specification (Agrochemical Context)
Route of administration Foliar Application is the method used, including ground sprayer, aerial application, or chemigation.
Dosing schedule (Application Rate) Application rates typically range from 8.0 to 12.0 fluid ounces per acre (fl oz/A), based on the Maximum Seasonal Use Rate for the active ingredients.
Timing constraints Timing is dependent on crop growth stage (e.g., V5 or R1 stages) and involves a Pre-Harvest Interval (PHI), which can range from 14 to 30 days depending on the crop.
Preparation requirements The SC product is diluted with water and requires vigorous agitation to maintain a uniform suspension during mixing and application.
Frequency rules Re-treatment is utilized on a 7- to 14-day interval if conditions warrant, and the maximum number of applications per season is not exceeded.

Resulting Procedural Structure

General use sequence:

  1. Preparation: Dilute the Delaro Suspension Concentrate with water, following the designated tank-mixing order if combining with other agents.
  2. Delivery: Apply the product via the Foliar Application route at the calculated rate while ensuring the minimum carrier volume of water is met.
  3. Scheduling: Observe the 7- to 14-day re-treatment interval and the final Pre-Harvest Interval (PHI) before crop maturity.

Connection to the overall use protocol: The protocol establishes a set of procedural steps defining the application of the fungicide. These parameters cover the usage cycle, from the dilution and mixing of the concentrate to the timing of the final application relative to crop harvest. This framework standardizes application rates, frequency constraints, and delivery methods to ensure controlled use across agricultural domains.

Recent Clinical Evidence

Research evidence / Overview of Studies for Delaro

Delaro is an agrochemical product containing fungicide active ingredients. Its research focuses on evaluate its role in managing fungal diseases in crops. The evidence base, reviewed by regulatory bodies like the U.S. Environmental Protection Agency (EPA), consists primarily of large-scale field trials, replicated plot studies, and multi-year efficacy assessments. Research explores the product’s association with crop health and yield, rather than human therapeutic outcomes.

Research Evidence for Disease Management in Corn

The research conducted for corn involves randomized field trials across multiple locations and growing seasons, often referred to as multi-site trials. These studies were used in research exploring how outcomes related to systemic or functional imbalance in the corn crop change over time, and they specifically studies monitored end-of-season Grain Yield (bushels per acre) and assessments of Disease Severity and Incidence for diseases like Northern Corn Leaf Blight and Southern Rust.

Studies reported that in research contexts involving high disease pressure, plots receiving treatment were associated with different measured yield values compared to untreated comparison plots. However, other trials, particularly those conducted during periods of low disease pressure or drought stress, reported findings were mixed, with minimal measured difference in outcomes between treated and untreated comparison plots.

Research Evidence for Disease Management in Soybeans and Pulses

The evidence for soybeans and pulses also relies on multi-location field studies and replicated trials, which were used in research exploring the product's role in conditions characterized by episodic or acute manifestations, such as Frogeye Leaf Spot and White Mold. Research specifically studies monitored final Grain Yield, Disease Severity Index (DSI), and other outcomes reflecting daily functioning or activity level of the crop canopy.

Studies monitored how Grain Yield values were associated with plots receiving treatment, reporting differences when compared to non-treated plots over multiple years. Research reported that the product's application strategies were studied for their role in outcomes related to systemic or functional imbalance under varying pressure levels, particularly for white mold.

Durability of Effect and Long-Term Follow-up Data

Most publicly reported field trials are designed as short-term research exploring short-term symptom changes over the course of a single growing season. While some regulatory submissions aggregate data across multiple years, long-term effects are not fully established regarding sustained or multi-generational performance. There is limited information for long-term outcomes that demonstrate the durability of the disease management strategy over continuous, multi-year use on the same land.

Frequently Asked Questions (FAQ)

Common questions about Delaro (FAQ)

Q: How long does a course of Delaro treatment usually last?

According to official product application restrictions, the schedule for Delaro is based on crop management needs and timing. The maximum allowed use is defined by a Maximum Seasonal Use Rate and a maximum number of applications per crop year, which cannot be exceeded. This means the duration of the use program is tied to the growing season of the crop being treated.


Q: Can Delaro be used long-term, or is it only for short-term use?

Official information indicates that most efficacy research explores the product’s use over a single growing season. For human exposure, regulatory documents classify the product for potential damage to organs through prolonged or repeated exposure (H373), which suggests that continuous human contact carries defined risks and is strongly discouraged.


Q: What are the most commonly reported side effects of Delaro in official documents?

Regulatory safety documents, like the GHS/HCS Safety Data Sheet, list the potential human health risks as chemical hazards, not pharmaceutical side effects. The primary hazard risks include being Harmful if swallowed, inhaled, or absorbed through the skin, causing moderate eye irritation, and acting as a Skin Sensitizer (may cause an allergic skin reaction). These official documents generally do not provide frequency data (how common these effects are).


Q: Is Delaro considered a high-risk medication by regulatory bodies?

Delaro is not a medication, so it is not classified as a pharmaceutical risk. It is classified as an agrochemical chemical hazard with a Warning signal word, listed as Harmful and a Skin Sensitizer. It may also be classified as a Restricted Use Pesticide (RUP) by the US EPA, which is a designation for products posing higher potential risk to people or the environment.


Q: Has Delaro been studied in children under the age of 18?

Public regulatory summaries do not detail specific developmental studies in minors. However, the official label requires the product be kept OUT OF REACH OF CHILDREN at all times. Furthermore, regulatory guidelines prohibit the entry of minors into treated areas during the government-mandated Restricted Entry Interval (REI) for worker protection.


Q: What should I do if I experience a very mild side effect from Delaro?

The official First Aid information indicates that for contact with skin, the recommended action is to wash with plenty of water and soap. The document also states that if skin irritation, rash, or persistent symptoms occur, medical advice or attention should be sought, based on the severity of the reaction.


Q: Are there any differences in Delaro's uses based on the country where it's prescribed?

As an agrochemical, Delaro is not intended for prescription. Its use conditions, such as the required Pre-Harvest Interval (PHI) and Restricted Entry Interval (REI), are defined by local regulatory agencies. These specific timing and application constraints can differ based on country and local governmental regulations.


Q: What is the process for getting Delaro approved by the FDA or equivalent agencies?

The product is regulated as a pesticide by agencies like the EPA (Environmental Protection Agency) and PMRA (Pest Management Regulatory Agency), not the FDA. Agrochemical registration requires submitting extensive data, including efficacy and toxicity studies, to demonstrate that the product will not pose unreasonable adverse effects to humans or the environment when used as directed.


Q: What does the term 'contraindication' mean regarding Delaro?

In the context of Delaro, contraindication functions as a prohibition. The official eligibility profile states that therapeutic use (taking it as a medicine) is absolutely contraindicated. General public exposure and ingestion are also prohibited, and access to treated areas is restricted for defined periods.


Q: Why does the information leaflet mention regular monitoring while taking Delaro?

The label requires handlers (workers) to adhere to the Worker Protection Standard (WPS), including wearing Personal Protective Equipment (PPE). This necessitates monitoring of clothing and skin contact to ensure protective measures are effective and followed correctly. Additionally, a Restricted Entry Interval (REI) is established to limit entry into treated areas.


Q: Is Delaro a Schedule IV controlled substance or similar classification?

Delaro is a fungicide regulated under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) by the EPA. It is not regulated as a pharmaceutical controlled substance. However, official information indicates it may be classified as a Restricted Use Pesticide (RUP) under FIFRA, which mandates specific licensing or permits for purchase and application.

How should Delaro be stored and disposed of?

How to Store and Dispose of Delaro: Official Regulatory Requirements

Delaro must be stored in its original container, kept tightly closed, in a cool, dry, and well-ventilated place.

Storage Restriction Requirement
Temperature Do not store at temperatures below freezing; protect from heat and fire.
Protection Keep away from direct sunlight and store separately from food, feed, and foodstuffs.
Access KEEP OUT OF REACH OF CHILDREN and restrict access to authorized persons only.

For disposal, contents and containers must be discarded in accordance with local regulation. Environmental rules prohibit the product or spillage from entering waterways, drains, or soil. Empty containers must not be reused and should be triple-rinsed before following disposal guidelines.

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

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