Oxifarm

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Oxifarm

Method of action: Ophthalmologicals

Treatment option: Blepharitis, Keratitis, Trachoma

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 Oxifarm

Property Description
Active Ingredient Oxytetracycline Hydrochloride (INN)
Form Solution for injection (parenteral), topical ointment/powder
Pharmacological Class Antibiotic (Tetracycline Class)
Action Type Bacteriostatic
Origin Semi-synthetic (derived from Streptomyces rimosus)

What Type of Medicine is Oxifarm?

Oxifarm is an antibiotic medication used primarily to address established bacterial infections. The medicine belongs to the tetracycline class of antimicrobial agents, a group internationally recognized as a critical component of infectious disease management. Oxifarm’s active ingredient, Oxytetracycline Hydrochloride, is clinically recognized for its versatility as a broad-spectrum agent, meaning it has demonstrated activity against a wide variety of susceptible bacteria.


Composition and Origin: Oxytetracycline Hydrochloride

The single active component in Oxifarm is Oxytetracycline Hydrochloride. This is the stabilized salt form derived from the base compound, Oxytetracycline, which is a semi-synthetic derivative originally sourced from the culture of the soil bacterium, Streptomyces rimosus. The hydrochloride salt form provides chemical stability and solubility, which are requirements for producing effective and reliable pharmaceutical preparations. Depending on the intended therapeutic application, Oxifarm is formulated for both systemic use, such as a solution for injection administered via the parenteral route, and for topical formulations like ointments.


How Does Oxifarm Generally Affect Bacteria?

The core action of Oxifarm is definitively bacteriostatic, meaning its function is to inhibit the growth and multiplication of bacteria, rather than directly killing the microorganisms. This effect is achieved by interrupting the bacteria's critical process of protein synthesis. This bacteriostatic activity is essential for reducing the microbial load, thereby allowing the patient's immune system to clear the remaining, non-growing pathogens and facilitate the natural resolution of the infectious process.

Regulatory References

  1. Oxytetracycline on WHO EML

What side effects are possible with Oxifarm?

Possible Side Effects and Safety Information

The safety profile of Oxifarm (Oxytetracycline) is officially documented by regulatory agencies and covers potential effects across several physiological systems. Adverse reactions are grouped by System-Organ Class (SOC) and severity, reflecting the established framework for communicating medication risk.

Key areas of safety concern include Gastrointestinal Disorders, where common reactions like nausea, vomiting, and diarrhea are documented, alongside serious events such as Clostridium difficile-associated diarrhea (CDAD) and esophageal ulceration. Dermatological Reactions include the possibility of rashes and photosensitivity, the latter requiring caution regarding sun exposure.

Serious Reactions and Specific Constraints

Regulatory documents highlight the potential for Serious Adverse Reactions (SARs), including severe hypersensitivity reactions like Anaphylaxis and effects on the central nervous system, specifically Intracranial Hypertension (IH), which is associated with headache and blurred vision.

Safety notes impose explicit restrictions based on patient characteristics and exposure timing:

  • Pediatric and Fetal Risk: Use during periods of tooth development (up to age eight) and during the last half of pregnancy is restricted due to the documented risk of permanent tooth discoloration and inhibition of skeletal development.
  • Organ Impairment: There is a documented increased risk of hepatotoxicity (liver damage) in patients with pre-existing renal (kidney) impairment.
  • Drug-Related Restrictions: Concomitant use with isotretinoin is discouraged due to the potential for compounding the risk of IH, a high-level safety concern outlined in official labeling.

Overdose and Emergency Response

The official regulatory documents classify an overdose of Oxifarm as potentially severe, with a focus on specific manifestations and mandatory emergency actions. Overdose presentations are documented to include severe headache, blurred vision, and diplopia, which are clinical signs of Intracranial Hypertension (Pseudotumor Cerebri). Gastrointestinal distress, such as nausea and vomiting, is also commonly noted in regulatory summaries. If visual disturbances occur, a prompt ophthalmologic evaluation is warranted, as regulatory labeling notes the possibility of permanent visual loss as a sequela of IH.

Excessive systemic accumulation, particularly in individuals with impaired renal function, increases the risk of liver toxicity and metabolic disturbances like azotemia. Due to the seriousness of these outcomes, regulators mandate that individuals seek immediate medical attention or call a poison control center for any suspected overdose. Emergency services should be contacted if the person has collapsed or is non-responsive.

Management is defined as symptomatic and supportive treatment, as no specific antidote is known for this medication. Furthermore, overdose or excessive exposure during development (up to age 8) is officially associated with the risk of permanent tooth discoloration and inhibition of bone growth.

Therapeutic Uses of Oxifarm

What Oxifarm Treats: Main Uses and Benefits

Oxifarm is applied across domains where additional symptomatic support is needed to address conditions characterized by systemic or localized discomfort. The medication is commonly used to help manage symptomatic clusters across various conditions. It is considered relevant for easing symptoms that interfere with daily functioning across various therapeutic domains.

It is primarily used to address conditions presenting with acute or disruptive episodes, including pneumonia, bronchitis, severe acne vulgaris or rosacea, specific urinary tract infections (UTIs), and various sexually transmitted infections (STIs) like Chlamydia. The medication helps ease symptoms related to systemic imbalance like fever and malaise, and symptoms that interfere with daily functioning such as persistent coughing or painful urination.

“This medication is applied in addressing symptom clusters that include pronounced skin lesions or systemic signs of acute disease, offering supportive relief.”

This approach supports the patient during difficult episodes by easing distress and is often used during phases when symptoms become more noticeable, particularly when supportive symptom management is needed in scenarios involving allergies or when other symptomatic management strategies may not be appropriate.

Quick Fact: Use in Managing Inflammatory Symptoms
Oxifarm is commonly used to help with conditions characterized by periods of heightened symptoms and inflammatory or irritative states in the skin and respiratory tract.

Regulatory References

  1. NIH DailyMed Label

Eligibility and Restrictions for Use

Oxifarm (Oxytetracycline) is an antibiotic whose use is strictly governed by regulatory eligibility rules to prevent permanent adverse effects, particularly during developmental stages.

Contraindicated Populations

Use is strictly contraindicated for several groups, as stated in official labeling:

  • Children: Infants and children under 12 years of age must not use this medicine due to the risk of permanent tooth discoloration and bone growth inhibition.
  • Pregnancy and Breastfeeding: Use is contraindicated during the second and third trimesters of pregnancy and in lactating women.
  • Hypersensitivity: Patients with a known allergy to Oxytetracycline or any other tetracycline-class drug.
  • Comorbidities: Individuals with chronic renal or hepatic impairment, Systemic Lupus Erythematosus, or Porphyria.
  • Concurrent Medication: Patients receiving concurrent therapy with systemic retinoids (e.g., Isotretinoin).

Restricted or Conditional Use

Caution is advised for older adult (geriatric) patients, as subclinical renal insufficiency may lead to drug accumulation. Individuals with a history of Intracranial Hypertension are also considered an elevated-risk group, requiring close monitoring.

What should I know about interactions with other medicines?

Oxifarm (oxcarbazepine) can interact with a wide range of medications, primarily by affecting liver enzymes that metabolize other drugs. It can act as an enzyme inducer (speeding up metabolism and reducing effectiveness) and a weak enzyme inhibitor (slowing down metabolism and potentially increasing drug levels) for different compounds.

Medications Whose Effects May Be Decreased

Oxifarm is known to decrease the plasma concentration and therapeutic effect of several critical drug classes, requiring careful monitoring or alternative therapies:

  • Hormonal Contraceptives (e.g., oral birth control pills): Oxifarm can significantly reduce the blood levels of estrogen and progestin components, which may lead to contraceptive failure and unintended pregnancy. Women should use alternative, non-hormonal contraception.
  • Other Antiepileptic Drugs (AEDs): Such as lamotrigine, phenytoin, and phenobarbital, requiring possible dose adjustments.
  • Calcium Channel Blockers: Medications like felodipine and verapamil.
  • Immunosuppressants: Including cyclosporine.

Medications Whose Side Effects May Be Increased

Oxifarm can increase the side effects of other medicines that act on the central nervous system (CNS):

Concomitant Drug Category Potential Effect
CNS Depressants (e.g., alcohol, opioids, benzodiazepines) Increased risk of drowsiness, dizziness, and sedation. Avoid or limit use.
Diuretics (e.g., hydrochlorothiazide) Increased risk of developing hyponatremia (low sodium levels), which requires serum sodium monitoring.

Mechanism of Action

How Oxifarm Works

Oxifarm (Oxytetracycline) exerts a bacteriostatic effect by specifically interfering with the machinery that allows susceptible bacteria to grow and replicate.


Targeted Inhibition of Bacterial Protein Assembly

The core mechanism involves the active molecule penetrating the bacterial cell and establishing a reversible binding interaction with the 30S ribosomal subunit. This molecular action physically obstructs the site where new amino acid carriers (aminoacyl-tRNA) are meant to dock, instantly halting the assembly of all essential structural and functional bacterial proteins. This cascade leads to the physiological outcome of suppressing microbial proliferation by arresting cell growth.


️ Mechanistic Limitations by Evasion Pathways

The efficacy of this growth-arresting mechanism is constrained by bacterial counter-mechanisms, which are relevant in contexts where resistance has developed. The most common evasion pathways include the activation of efflux pumps (which actively expel the drug from the cell) or the production of ribosomal protection proteins (which prevent Oxifarm from successfully binding the 30S subunit). This constraint reduces target engagement, thereby limiting the ability to achieve the desired state of bacteriostasis.

Dosage and Administration Information

How to Use Oxifarm

Oxifarm (Oxytetracycline Hydrochloride) is administered based on defined routes, dose frequency, and specific administration conditions. The choice of administration route depends on the required therapeutic concentration and the patient's clinical state. The medicine is available in several forms, including oral capsules, topical ointments, and a solution for injection for both intravenous (IV) and intramuscular (IM) use.


Official Dosing and Schedule

Standard systemic use typically follows a four-times-daily frequency (every six hours) to maintain consistent blood levels. The usual adult dose ranges from 250 mg to 500 mg per dose, totaling 1 to 2 g per day. For severe acute infections, therapy should be continued for at least 24 to 48 hours after fever and symptoms subside, often resulting in a course duration of seven to ten days, though specific infections may require longer regimens.


Administration Requirements

To ensure proper absorption, oral doses must be taken on an empty stomach, generally one hour before or two hours after meals. A critical instruction is to avoid taking the medicine with products containing high levels of calcium, iron, or magnesium, such as dairy products and antacids, due to significant impairment of absorption; a two- to three-hour separation is required. Furthermore, oral doses should be taken with adequate fluid while the patient remains in an upright position to minimize the risk of esophageal irritation.


Population-Specific Use

Dosage requires modification for patients with renal impairment, where the total daily dose must be decreased by reducing individual dose amounts or extending the interval between doses. Use of the tetracycline class is officially restricted in children under eight years of age. For pediatric patients 8 years and older, dosing is calculated based on body weight.

Recent Clinical Evidence

Research evidence / Overview of studies for Oxifarm


Evidence for Research in Severe Acne Vulgaris

The research evaluating Oxifarm (Oxytetracycline) in the context of severe acne vulgaris is primarily based on Randomized Controlled Trials (RCTs) and systematic reviews that examined this condition. These studies were evaluated in research exploring how symptoms change over time, and they included adolescents and adults with specific baseline characteristics. Researchers examined outcomes related to physical discomfort, such as the reduction in the inflammatory lesion count and changes observed on standardized acne severity scales. Findings describe patterns observed in the studies, where measurements of change in lesion counts were reported when compared to control groups.

However, long-term observation of the changes measured after the medication is discontinued is not fully established. Dedicated, large-scale studies comparing the drug against a broad range of contemporary therapies are less common, and follow-up durations were often limited to short- or intermediate-term intervals.


Evidence for Research in Susceptible Bacterial Infections

Oxifarm was evaluated in research contexts linked to various acute infections, such as specific respiratory, urinary tract, and sexually transmitted infections (STIs). This evidence is supported by a large body of historical clinical trials and cohort studies. Researchers monitored outcomes including the assessment of clinical resolution rate (symptom resolution) and the assessment of microbiological response (organism clearance). Research describes patterns related to the rate at which patients achieved clinical resolution.


Evidence Gaps and Areas of Uncertainty

The applicability of historical research is subject to considerations regarding the global issue of Antimicrobial Resistance (AMR). Observational data describes patterns related to the increased resistance to tetracyclines noted in microbial populations following drug exposure. The clinical significance of this change, however, is still being explored by research. Data for certain subgroups, such as older adults with multiple chronic conditions, remain insufficient, and subgroup findings are uncertain.

Key Studies & References

  1. Oxytetracycline Hydrochloride Injection, USP: Label Information

Frequently Asked Questions (FAQ)

Common questions about Oxifarm (FAQ)

Q: Is Oxifarm a long-term or short-term treatment?

Oxifarm is primarily used for short-term treatment of acute bacterial infections. Official guidelines for standard systemic use often recommend a course lasting only seven to ten days, and therapy should usually stop 24 to 48 hours after fever and other symptoms clear. However, some specific or chronic infections may require a defined longer course of treatment.

Q: Is it common for people to feel nauseous when starting Oxifarm?

Yes, nausea is commonly listed in official product information as a potential adverse reaction, belonging to the group of Gastrointestinal Disorders. These types of effects are often experienced as the body begins to adjust to the medication. Concerns about persistent or severe nausea should be discussed with a healthcare provider.

Q: How long does Oxifarm stay in a person's system?

Official information regarding how the body processes Oxifarm indicates it is cleared relatively quickly. To maintain consistent therapeutic levels, the medication is typically dosed multiple times a day, such as every six hours (four-times-daily). The necessary frequency is determined by a healthcare provider.

Q: Does stopping Oxifarm suddenly cause any specific issues?

Regulatory information strongly emphasizes the importance of completing the full course of therapy exactly as prescribed. Stopping the medication abruptly, even if symptoms subside, may compromise the full therapeutic effect. This failure to clear the infection fully increases the chance of the bacteria developing Antimicrobial Resistance (AMR).

Q: What does the patient information leaflet say about alcohol consumption while on Oxifarm?

Official documentation advises caution regarding alcohol consumption while using Oxifarm. This caution is based on the potential for alcohol to act as a central nervous system depressant. Combining it with Oxifarm could increase the risk of side effects like drowsiness, dizziness, and sedation.

Q: Are there any common lifestyle factors, like caffeine or alcohol, that interact with Oxifarm?

Regulatory documents specifically note that alcohol and foods high in calcium, iron, or magnesium may interact with Oxifarm. Consuming these substances close to the time of taking the oral dose can significantly impair the medicine’s absorption. No specific regulatory warnings regarding common factors like caffeine are typically listed.

Q: If I miss a dose of Oxifarm, what is the generally accepted advice?

Official guidance indicates that one should avoid taking a double dose to compensate for a missed dose. Instead, one should simply return to the normal dosing schedule. It is important to continue taking the medication until the full course is completed.

Q: Does Oxifarm affect a person's ability to drive or operate machinery?

Official documentation typically states that Oxifarm has a negligible or no influence on the ability to drive or operate machinery for most patients. If side effects such as dizziness or changes in vision occur, caution may be necessary.

Q: Is Oxifarm safe to use during pregnancy or while breastfeeding, according to regulatory bodies?

Use of Oxifarm is officially restricted or contraindicated during the last half of pregnancy and while breastfeeding. This is due to the potential risk of permanent tooth discoloration and skeletal development inhibition in the child. Safety data for the first trimester is not fully established, and use during this period requires careful consideration of the potential risks.

Q: Is Oxifarm used for conditions other than its main purpose, according to research?

Official research summaries and regulatory indications focus on the medicine’s approved use for susceptible bacterial infections and severe acne vulgaris. No other therapeutic applications are officially defined in the regulatory labeling or comprehensive research summaries.

Q: Are the side effects of Oxifarm temporary, or can they last long-term?

Most common adverse effects, such as nausea or mild diarrhea, are expected to be temporary. However, regulatory warnings explicitly note a few serious risks that can lead to permanent changes. These include permanent tooth discoloration when used by young children and the potential for irreversible vision loss associated with Intracranial Hypertension (IH).

Q: If Oxifarm is taken with food, does it change how the body absorbs it?

Yes, regulatory instructions require the oral dose to be taken on an empty stomach to ensure proper absorption. Taking the medicine with food, particularly products containing high amounts of calcium, iron, or magnesium (like dairy or some supplements), can significantly impair how the body absorbs the active ingredient.

Q: Is there a maximum length of time Oxifarm is usually taken for?

While standard use is for a short duration, official documentation restricts the continuous use of Oxifarm in certain specific long-term applications to defined periods. This restriction exists due to warnings about the risk of increasing bacterial resistance with prolonged use.

Q: Do older adults need to take a lower amount of Oxifarm?

Official instructions state that dosage modification, which typically involves a decrease in amount or an extension of the interval, is necessary for patients with renal (kidney) impairment. Because older adults can often have subclinical renal insufficiency, cautious dosing is often applied to this population.

Q: What is the main concern regarding taking Oxifarm with blood thinners?

The primary safety concern documented in regulatory materials is that Oxifarm may depress plasma prothrombin activity, which is involved in blood clotting. Patients who are already taking blood thinners (anticoagulants) may need to have their blood thinner dose downwardly adjusted under medical supervision to safely manage the risk of bleeding.

Q: Is it possible for the drug to lose its effectiveness over time (tolerance)?

Regulatory-reviewed research acknowledges the growing public health issue of Antimicrobial Resistance (AMR) to the tetracycline class of drugs. This refers to the ability of bacteria to evolve ways to survive drug exposure, which is a major factor limiting the drug's long-term effectiveness in a population.

Q: Can Oxifarm affect my mood or sleep patterns?

While not commonly reported, official documents on serious reactions note the potential for Intracranial Hypertension (IH), which is associated with symptoms like headache and may broadly involve the central nervous system (CNS). Unusual changes in mood or sleep patterns are generally noted as requiring discussion with a healthcare provider.

Q: What should I do if I experience a mild, common side effect while using Oxifarm?

Official instructions advise contacting a doctor or healthcare provider for specific medical advice regarding side effects. This guidance is especially important before attempting to treat or change the way one manages side effects, such as diarrhea.

Q: Is Oxifarm associated with any specific warnings about allergic reactions?

Yes, official warnings and precautions specifically highlight the risk of severe hypersensitivity reactions, such as Anaphylaxis. Patients are instructed to seek immediate medical attention if they experience signs of a severe reaction, including rash, swelling, or difficulty breathing.

Q: What is the importance of blood tests while taking Oxifarm?

Patients who are receiving Oxifarm therapy over an extended period are typically advised in regulatory materials to have their blood work checked by their doctor. This monitoring allows the doctor to check for potential changes in organ function or other side effects that are not immediately visible.

Q: Is there a link between Oxifarm and changes in vision?

Yes, regulatory documentation links the drug to a serious, though rare, reaction called Intracranial Hypertension (IH). This condition can manifest clinically with symptoms like blurred vision and diplopia (double vision), and carries a potential risk of vision loss.

Q: Do any official documents state that Oxifarm is safe to take with common vitamins and supplements?

Official product information restricts the concurrent use of the drug with products containing calcium, iron, or magnesium, which are common components in many vitamins and supplements. The label does not universally confirm the safety of all other vitamins or supplements. The full regimen should be discussed with a healthcare provider.

How should Oxifarm be stored and disposed of?

How to Store and Dispose of Oxifarm?

The official regulatory instructions define specific environmental controls to maintain the stability of Oxifarm (Oxytetracycline Hydrochloride).

Storage Requirements

  • Temperature and Protection: Store the product at Controlled Room Temperature, typically 20 C to 25 C. The medicine must be protected from light and stored in a dry place. It is explicitly required to protect the injectable solution from freezing.
  • Container and Stability: The medicine must be kept in the original container and remain tightly closed. Multi-dose injectable solutions must be used within 60 days of the first puncture, as labeled.
  • Child Safety: All formulations must be stored out of the sight and reach of children.

Disposal Instructions

Unused or expired Oxifarm must be discarded according to local regulations via an approved waste disposal plant. Users are instructed to avoid release to the environment and not let the product enter drains to prevent the dispersal of antimicrobial residues.

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

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