Hexasol

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Hexasol

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Medically reviewed

Marina Burgos

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 Hexasol

What is Hexasol? An Overview

Property Description
Active Ingredients Oxytetracycline Hydrochlorid, Flunixin
Form Sterile Solution for Injection (Long-Acting)
Pharmacological Class Combination Antibiotic and Non-Steroidal Anti-Inflammatory Drug (NSAID)
General Purpose Simultaneous infection control and inflammation/fever relief
Origin Synthetic

Hexasol is a synthetic veterinary medicinal product designed as a combination drug for use in livestock, distinguished by its proprietary dual composition. Its core identity is rooted in its pharmacological classification, integrating a potent broad-spectrum antibiotic with a Non-Steroidal Anti-Inflammatory Drug (NSAID). This integrated approach ensures two distinct therapeutic actions are delivered simultaneously. As a combination product, Hexasol differs from single-agent pharmaceuticals by addressing both microbial pathology and the associated symptomatic inflammatory response, positioning it as a consolidated therapeutic entity.


Composition and Form Differentiators

The therapeutic action of Hexasol rests on its two key active ingredients: Oxytetracycline Hydrochlorid and Flunixin. Oxytetracycline belongs to the tetracycline antibiotic class, a group characterized by its role in the inhibition of protein synthesis in susceptible bacteria. Flunixin functions as the anti-inflammatory component, acting as a reversible inhibitor of cyclo-oxygenase enzymes, thereby suppressing the chemical signals for pain and fever. A key differentiator for Hexasol is its presentation as a sterile solution for injection, specifically a long-acting (LA) formulation, which is designed to sustain therapeutically effective levels of both active compounds over an extended period from a single parenteral administration.


General Therapeutic Strategy

The general purpose of combining these two agents is to provide integrated support for complex conditions where bacterial infection and severe systemic reactions coexist. The design facilitates the immediate mitigation of clinical signs such as pyrexia (fever) and inflammation via the Flunixin component, while the Oxytetracycline simultaneously ensures the necessary microbial clearance. Combined veterinary products simplify treatment and improve compliance in livestock management. This synergistic strategy aims to rapidly enhance the patient's comfort and stabilize its condition by addressing both the causative pathogen and the major discomfort associated with the pathology.

What side effects are possible with Hexasol?

Hexasol's regulatory safety profile is defined by officially documented adverse reactions and specific constraints related to its dual composition, an antibiotic (oxytetracycline) and an NSAID (flunixin).

Frequency and System-Organ Classes

The most serious adverse events are classified as Very Rare (less than 1 in 10,000 occurrences). This category includes the potential for hypersensitivity reactions, such as anaphylaxis and associated systemic collapse, as detailed in regulatory product information. Events classified as Occasional include local reactions and swelling at the injection site.

Adverse effects are documented across several System-Organ Classes, notably Immune System Disorders (hypersensitivity), Vascular Disorders (collapse), and Gastrointestinal Disorders, where there is a documented risk of ulceration and bleeding.

Safety Constraints and Special Populations

Official labeling includes specific constraints related to the drug’s components. The NSAID component necessitates contraindications against use in individuals with existing cardiac, hepatic, or renal disease to mitigate the risk of increased toxicity. There is also an explicit restriction on concurrent administration of other Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) or potentially nephrotoxic drugs.

The oxytetracycline component introduces specific population-based considerations regarding development: administration during periods of tooth and bone development is associated with the risk of discolouration of these tissues. Furthermore, official documents note that use in dehydrated states may increase the potential for renal toxicity. Other less serious reactions, such as transient hemoglobinuria, have been reported shortly after injection.

Overdose and Emergency Response

An overdose is officially documented to present with signs of systemic toxicity derived from both active components. Manifestations of high-dose exposure include serious changes in physiological balance such as Azotaemia, Hyperphosphataemia, and Acidosis, alongside evidence of organ involvement like Fatty Liver Degeneration and Pancreatitis. Gastrointestinal toxicity may involve documented ulceration and the potential for Gastro-intestinal Bleeding.

Severe neurological manifestations are listed, specifically Intracranial Hypertension (Pseudotumor Cerebri), which may present with headache, blurred vision, diplopia, or vision loss. The potential for permanent visual loss and fatal colitis are recognized as severe outcomes of toxicity.

Immediate medical attention is required upon any suspicion of overdose. Regulatory guidance emphasizes that the primary management approach must be symptomatic and supportive treatment, as official labeling confirms no specific antidote is known. The risk of severe toxicity is noted to be elevated in individuals with existing renal or hepatic impairment, dehydration, or cardiovascular dysfunction.

Therapeutic Uses of Hexasol

Hexasol, a veterinary medicine, combines an antibiotic (oxytetracycline) and an NSAID (flunixin meglumine), and is utilized to help manage both bacterial infection and associated physical discomfort. The combined approach is designed for the management of clinical signs and the underlying cause.

The primary approved uses are for the management of bacterial pneumonia associated with Pasteurella species and for the control of associated pyrexia (fever) in beef and non-lactating dairy cattle. The combined formulation is used to address the infectious cause while also helping to mitigate severe symptoms. The NSAID component offers anti-inflammatory, pain-relieving, and fever-reducing properties. This combination allows for the delivery of both an agent for managing infection and an anti-inflammatory drug in one injection.

The overall benefit is directed toward managing the primary clinical scenario of acute bovine respiratory disease, which involves the infection, fever, pain, and inflammation.


Quick Fact: Relief for Fever The flunixin meglumine component helps control pyrexia, supporting symptomatic relief for animals suffering from acute infection.

Eligibility and Restrictions for Use

Who can and cannot use Hexasol?

Regulatory documents define population eligibility for Hexasol based on the target species, physiological status, and contraindications related to its dual composition (antibiotic and NSAID).

Approved Populations:

Hexasol is approved for use in Beef Cattle and Non-Lactating Dairy Cattle under standard labeled conditions.

Absolute Contraindications (Must Not Use):

Use is contraindicated in animals suffering from cardiac, hepatic, or renal disease.

The medicine must also not be used in animals with known or possible gastrointestinal ulceration or bleeding, or in cases of known hypersensitivity to Oxytetracycline, Flunixin, or any components.

Restricted and Not Recommended Populations:

Category Restriction Status
Dairy Production Not for use in cattle producing milk for human consumption, or in female dairy cattle 20 months of age or older.
Age Use in animals less than 6 weeks of age and aged animals may involve additional risk and requires special management.
Physiological State Administration must be avoided in dehydrated, hypotensive, or hypovolaemic animals due to the potential for increased renal toxicity.
Breeding Status Not for use in bulls intended for breeding purposes.

The drug is subject to restrictions regarding concurrent use and is not approved for calves intended for veal production.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Regulatory documentation outlines specific interaction patterns for Hexasol, which is driven by the properties of its two active components: the NSAID (Flunixin) and the bacteriostatic antibiotic (Oxytetracycline).

Classification Interacting Agents and Official Restriction
Contraindicated Combinations Other Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) must not be co-administered concurrently, with a mandatory separation period of 24 hours specified to avoid cumulative toxicity risks.
Pharmacodynamic Antagonism Bactericidal antimicrobials, such as Penicillins and Cephalosporins, should be avoided simultaneously as the Oxytetracycline component may interfere with their action.
Enhanced Toxicity Risk Concurrent use with Corticosteroids is advised against due to the potential for an additive risk of gastrointestinal ulceration.
Renal Clearance Risk Administration of Potentially Nephrotoxic Drugs (e.g., Aminoglycosides) should be avoided due to the documented risk of increased renal toxicity, which is related to the Flunixin component’s potential to reduce the excretion of co-administered agents.

This profile also includes a note regarding population-specific interaction risk. The anti-prostaglandin effects of Flunixin on renal function are noted to involve an additional risk in both aged animals and those less than six weeks of age. When other treatments are administered, the official documents require the use of a separate injection site.

Mechanism of Action

How Hexasol Works: Mechanism of Action


Antibacterial Mechanism: Targeting Prokaryotic Protein Synthesis

The core antibacterial action is governed by Oxytetracycline, which acts as an inhibitor by binding reversibly to the bacterial 30S ribosomal subunit . This molecular interaction blocks the necessary step of protein elongation, leading to the cessation of microbial proliferation and restricting the spread of the micro-organism.


Anti-Inflammatory Mechanism: Modulating Prostaglandin Synthesis

The physiological consequences are initiated by Flunixin, which operates by non-selectively inhibiting the host Cyclooxygenase (COX-1 and COX-2) enzymes. This enzymatic blockade interrupts the arachidonic acid cascade, reducing the synthesis of inflammatory mediators like prostaglandin E2 ( PGE2). This physiological adjustment contributes to the modulation of the elevated thermoregulatory set-point via the hypothalamus and constrains the sensitization of peripheral nociceptors.


Dual-System Mechanistic Synergy

Hexasol utilizes a complementary dual-action mechanism, combining the bacteriostatic effect (targeting the microbial cause) with the anti-inflammatory effect (modulating the systemic host inflammatory response). This parallel deployment of mechanisms allows for a swift adjustment of systemic responses through quick prostaglandin reduction, while simultaneously ensuring the restriction of microbial proliferation.

Dosage and Administration Information

The administration of Hexasol leverages its long-acting (LA) injectable formulation to deliver the combination of oxytetracycline and flunixin. This medicine is designated for single administration only, with no provision for repeat dosing in the protocol. The delivery methods are intramuscular (IM) and subcutaneous (SC) injection.

Official Dosing Regimen

Dosing is determined by the animal's weight, ensuring a proportional delivery of the active ingredients. The recommended volumes and mass equivalents are standardized for application.

System Volumetric Dose Rate Mass Equivalent (Oxytetracycline/Flunixin)
Metric 1 mL per 10 kg body weight 30 mg/kg and 2 mg/kg
US 1 mL per 22 lb body weight 13.6 mg/lb and 0.9 mg/lb

Procedural and Time Constraints

Several procedural instructions govern the use of the injection. The volume administered at any one site must not exceed a specified maximum, requiring the dose to be divided if necessary. Furthermore, Hexasol must not be mixed with any other products prior to administration. The single injection is designed to provide sustained antibiotic activity for up to six days. The use of other non-steroidal anti-inflammatory drugs (NSAIDs) is restricted and should be separated from Hexasol administration by at least 24 hours. Dosage may require adjustment for animals under six weeks of age.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Hexasol

Evidence for use in Bacterial Pneumonia (Bovine Respiratory Disease)

Research for Hexasol has focused on conditions characterized by acute bacterial infection. The core evidence used for regulatory review was generated from short-term randomized controlled trials (RCTs) and supporting studies that examined the evaluation of bacterial infection associated with Pasteurella species. These studies were used in research exploring how systemic signs change over a defined time interval following administration. The studies explored the clinical evaluation of the condition, with findings reporting patterns measured in the trials related to changes in the physical signs of pneumonia. Research also examined changes in pathogen presence, monitoring microbial patterns in the observed populations. The findings reported by the controlled trials were analyzed for regulatory assessment that contributed to the official registration of the medicine for this use. This evidence contributes to the broader scientific understanding relied upon during regulatory assessment.


Evidence for the Control of Associated Fever (Pyrexia)

The inclusion of an anti-inflammatory component in Hexasol means it was also studied for its role in acute symptomatic relief. This research was primarily conducted within the same short-term controlled clinical trials as the pneumonia evaluation. Studies monitored outcomes linked to inflammatory or irritative states, specifically focusing on the measurement of changes in body temperature (pyrexia) that accompany the acute infection. Findings from these studies describe how symptoms evolved in the observed populations, with a focus on acute changes measured during the study period.


What is Still Uncertain About Hexasol Research

A key research limitation is that the primary evidence is heavily concentrated on the acute phase of infection. Consequently, follow-up durations were limited, typically assessing outcomes within a week or two post-administration. Long-term effects are not fully established based on the core efficacy studies. Comparative evidence, or data for evaluating the condition caused by a broader range of pathogens or in different stages of the disease, remain limited in core evidence. This research provides context but not individual predictions, and findings describe group patterns, not personal outcomes.

Frequently Asked Questions (FAQ)

Common questions about Hexasol (FAQ)


Q: What is the main difference between Hexasol and other medicines for the same condition?

A: Official documents state that Hexasol is a combination product. This means it contains two distinct types of active ingredients: a broad-spectrum antibiotic and a Non-Steroidal Anti-Inflammatory Drug (NSAID). This dual composition distinguishes it from single-agent medicines.

Q: What are the most commonly reported or mentioned side effects of Hexasol online?

A: Regulatory documents classify the most frequent adverse events as Occasional. These events often include local reactions and swelling at the site where the injection was given. Very serious events, such as anaphylaxis (a severe allergic reaction), are classified as Very Rare (less than 1 in 10,000 occurrences).

Q: How long does it typically take for people to notice the effects of Hexasol?

A: Official information indicates that the anti-inflammatory component is associated with a swift adjustment of systemic responses, meaning relief from fever or inflammation may begin quickly. The antibiotic part is designed to be sustained for up to six days after the single administration.

Q: Is Hexasol generally safe for older adults or elderly patients?

A: Official labeling advises that use in aged animals may involve additional risk compared to younger individuals. This risk is primarily related to potential effects on renal (kidney) function due to the NSAID component, and official labeling indicates that special management may be required.

Q: What is the longest period of time studies have examined people taking Hexasol?

A: Research studies cited for regulatory review were heavily focused on the acute phase of infection. Consequently, official documents note that follow-up was typically limited, commonly assessing outcomes within a week or two post-administration.

Q: Do studies suggest Hexasol is safe for long-term use?

A: Official documents note that regulatory research is highly concentrated on the acute phase of infection. For this reason, official information states that long-term effects are not fully established based on the core efficacy studies provided for registration.

Q: Why do some people experience initial side effects with Hexasol that later disappear?

A: Official documentation describes reactions like local swelling at the injection site as Occasional. This indicates these reactions are typically transient, meaning they are not expected to persist according to regulatory documentation.

Q: Is Hexasol available in different strengths or formulations?

A: The product is approved as a single, proprietary sterile solution for injection (Long-Acting) at a fixed strength. Official documentation does not define or approve any other strengths or forms for this specific medicine.

Q: How is Hexasol different from previous versions of similar treatments?

A: Hexasol is officially described as a unique combination product that integrates two types of drugs. It is also formulated as a long-acting (LA) injectable, designed to sustain effective levels over an extended period from a single dose.

Q: Can Hexasol be taken with or without food, according to official instructions?

A: Regulatory instructions for Hexasol, which is a sterile solution for injection, specify the injection route (IM/SC) and do not contain any guidance regarding food consumption.

Q: What are the common signs of an allergic reaction to Hexasol?

A: Regulatory documents categorize hypersensitivity reactions as Very Rare. These reactions can potentially progress rapidly and are documented to include the potential for severe outcomes, such as anaphylaxis and associated systemic collapse.

Q: Do clinical trials include diverse patient populations?

A: Research evidence cited for regulatory review included evaluation of specific populations, such as those related to Bovine Respiratory Disease. While the documented trials evaluated these specific patient groups, broader diversity of the observed populations is not explicitly detailed in the summary documents.

Q: Are there any pediatric studies published for Hexasol?

A: Official documents note that use in animals less than six weeks of age may involve additional risk and requires special management. This indicates that this young population was a subject of consideration during the drug's development.

Q: What are the long-term safety data themes for Hexasol?

A: Long-term safety data themes are concentrated on the acute phase of infection and the potential risks of the NSAID component. They include documented risks of gastrointestinal ulceration/bleeding and contraindications for individuals with existing cardiac, hepatic, or renal disease.

Q: What is the connection between Hexasol and other similar 'sols' or drug classes?

A: Hexasol belongs to the pharmacological classes of tetracycline antibiotics and Non-Steroidal Anti-Inflammatory Drugs (NSAIDs). Official information focuses on these two active classes, Oxytetracycline and Flunixin.

Q: Does the efficacy of Hexasol change over time?

A: The product is designed to provide sustained antibiotic activity for up to six days after a single dose. Furthermore, regulatory documentation defines an unopened shelf-life and an in-use shelf-life (28 days) intended to maintain product quality and efficacy over time.

Q: Can Hexasol cause drowsiness or affect my ability to concentrate?

A: The official safety profile from regulatory documents does not list drowsiness or effects on concentration among the documented adverse reactions.

Q: Are there any common foods or drinks that should be avoided when taking Hexasol?

A: Regulatory information for Hexasol only outlines specific drug-drug interactions. There are no explicit warnings about interactions with specific foods or drinks in the official product labeling.

Q: What happens if I accidentally miss a dose of Hexasol (non-directive question)?

A: Official documentation specifies Hexasol is designated for single administration only. There is no provision for repeat dosing or instructions for managing a missed dose because it is a one-time treatment protocol.

Q: Is it true that Hexasol has a Boxed Warning listed by the FDA?

A: Official FDA product information does not indicate that a Boxed Warning (also known as a Black Box Warning) is associated with Hexasol.

Q: Does Hexasol require any special monitoring by a healthcare provider?

A: While official documents require special management for certain populations (e.g., aged or young), they do not mandate general patient monitoring (such as scheduled lab tests) in the standard prescribing information.

Q: Is Hexasol known to be safe during pregnancy, based on regulatory classifications?

A: Official labeling notes a risk of discolouration during periods of tooth and bone development in young, developing animals. Because of this and other concerns, the drug is not for use in certain pregnant or breeding animals.

Q: Are there any known interactions between Hexasol and herbal supplements?

A: Regulatory information only outlines specific interactions with other pharmacological agents (medicines). There is no explicit mention of interactions with herbal supplements in the official documents.

Q: Is it possible to become dependent on Hexasol over time?

A: Regulatory documents do not classify Hexasol as having an abuse potential. Therefore, there is no official information or warning regarding a risk of causing dependence or physical withdrawal symptoms.

Q: What is the purpose of the 'inactive ingredients' in the Hexasol formulation?

A: Inactive ingredients are defined in regulatory information as components that enable the stability and physical form of the product. These ingredients help ensure the product is a sterile solution and maintains its intended long-acting (LA) nature.

Q: Why is Hexasol sometimes described as having a 'narrow therapeutic index' (if applicable)?

A: The specific regulatory term 'narrow therapeutic index' is not found in the official documents for Hexasol. However, the use of the drug requires strict attention to weight-based dosing due to the toxicity risk, especially in those with pre-existing conditions.

Q: Does Hexasol affect blood pressure or heart rate?

A: The safety profile includes reports of Vascular Disorders, such as systemic collapse, which can severely affect vital signs. However, there are no general, common effects described on routine blood pressure or heart rate.

Q: Are there any known warnings about taking Hexasol before surgery?

A: Official labeling includes the underlying risk of gastrointestinal ulceration and bleeding from the NSAID component, which is a factor to consider near the time of surgery.

Q: Do regulatory bodies classify Hexasol as a controlled substance?

A: Official regulatory documents do not classify Hexasol as a controlled substance under the relevant scheduling regulations.

Q: Is it normal for Hexasol to cause changes in appetite or weight?

A: Regulatory documents do not list changes in appetite or weight among the documented side effects or adverse events for Hexasol.

Q: Is Hexasol available over the counter in any country?

A: Regulatory documentation consistently classifies Hexasol as a prescription-only veterinary medicine. It is not an over-the-counter product.

Q: What happens to Hexasol in the body (basic concept of metabolism/clearance)?

A: Regulatory documents confirm the drug is designed to achieve sustained concentrations as a long-acting formulation. It is eventually processed through the body via metabolism and excretion (e.g., renal clearance), as detailed in pharmacokinetic studies.

Q: What is the half-life of Hexasol?

A: The half-life of the active ingredients (Oxytetracycline and Flunixin) is a specific pharmacokinetic parameter that is available in official regulatory documents.

Q: Is there evidence that Hexasol works differently in men vs. women?

A: Regulatory studies supporting the use of Hexasol for its approved populations do not provide evidence regarding differences in efficacy or safety related to gender.

Q: Do official sources mention any risk of rebound effects if Hexasol is stopped?

A: Regulatory documents do not include warnings or information regarding a risk of rebound effects upon the drug's discontinuation.

Q: Are there any official warnings about driving or operating machinery while on Hexasol?

A: Regulatory documents do not contain warnings related to operating vehicles or machinery. These are human-centric cautions that are not applicable to the approved population.

Q: Are there known interactions between Hexasol and alcohol consumption?

A: Regulatory information only outlines drug-drug interactions. There is no explicit mention of interactions with alcohol consumption in the official documents.

How should Hexasol be stored and disposed of?

Storage Requirements

Storage of Hexasol, a veterinary medicinal product, must strictly comply with regulatory labeling to maintain its quality. The container must be stored upright only and must not be kept at temperatures above 25 C. The product must remain in its outer carton to ensure protection. For safety, the medicine must be stored out of the sight and reach of children.

Stability Constraint Requirement
Unopened Shelf-Life 2 years
In-Use Shelf-Life 28 days after first opening

Disposal Instructions

Any unused veterinary medicinal product or waste materials derived from the use of Hexasol must be disposed of in accordance with local requirements. Disposal of empty containers must also follow guidance from the local waste regulation authority.

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

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