Tacro-Tic

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Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Tacro-Tic

Quick Facts

Property Description
Active Ingredient Tacrolimus
Form Ointment (Topical Preparation)
Pharmacological Class Immunosuppressant / Calcineurin Inhibitor
General Purpose Addressing chronic immune-mediated skin inflammation
Origin Synthetic derivative of a macrolide lactone

What Type of Medicine is Tacro-Tic?

Tacro-Tic is a prescription-only topical preparation featuring the active ingredient Tacrolimus, which is categorized as an immunosuppressant. More specifically, Tacrolimus belongs to the Calcineurin Inhibitor (CNI) class, a group of agents clinically recognized for their powerful ability to modulate immune system activity. As a localized topical agent, its general purpose is to provide targeted management of chronic skin conditions driven by underlying immune overactivity, contrasting with systemic immunosuppressants which affect the entire body.

Composition and Form: Tacrolimus Ointment

The medicine is defined by its single active ingredient, Tacrolimus, which is presented in the form of an ointment for topical administration. Tacrolimus is chemically a macrolide lactone, a refined, synthetic compound derived from a natural source. Its formulation as an ointment is a key differentiator: the semi-solid base is specifically designed to create an occlusive layer, aiding in the sustained delivery of the active substance into the skin while mitigating systemic absorption.

How Tacro-Tic Generally Calms Inflammation

The core function of Tacro-Tic is to achieve precise immunomodulation by interrupting the local inflammatory cycle. Tacrolimus acts by blocking the activation and signaling of key local immune cells, particularly T-lymphocytes, which initiate and sustain skin inflammation. This mechanism is crucial for its general purpose: mitigating the cause of inflammation, which subsequently helps reduce the physical symptoms, including persistent redness and swelling, associated with chronic inflammatory disorders.

What side effects are possible with Tacro-Tic?

Possible Side Effects and Safety Information

This section outlines the officially documented adverse reactions and key safety characteristics of Tacrolimus Ointment, based on regulatory reports and government health authority labeling.


Adverse Reaction Classification

Side effects are categorized by frequency, which is determined from clinical data provided to regulatory bodies like the European Medicines Agency (EMA) and the U.S. Food and Drug Administration (FDA).

Frequency Classification Common Adverse Reactions (Examples)
Very Common (ge 10% ) Application site burning sensation, application site pruritus (itching), headache
Common (1% to 10% ) Application site erythema (redness), pain, or irritation, folliculitis, alcohol intolerance (facial flushing)

The most common localized reactions, such as burning and pruritus, are typically observed during the first few days of treatment and generally resolve within one week of starting therapy.


Serious Safety Considerations

The U.S. FDA prescribing information includes a Boxed Warning concerning long-term safety. Rare post-marketing reports have included cases of lymphoma and skin cancer in patients using topical calcineurin inhibitors. Due to this potential risk, regulatory documents advise against continuous, long-term use of the ointment. There is also an increased documented risk of local infections, particularly those caused by the Herpes Simplex virus.

Population and Exposure Restrictions

Official labeling includes specific constraints based on patient age and external factors:

  • Pediatric Use: The medication is not indicated for children younger than 2 years of age. For children aged 2 to 15, only the lower strength (0.03%) is indicated.
  • UV Exposure: Patients are constrained to minimize or avoid exposure to natural and artificial ultraviolet (UV) light, including tanning beds and sun lamps.
  • Other Conditions: Use is generally not recommended in individuals with congenital or acquired immunodeficiencies or specific skin barrier defects, or in patients with hepatic failure.

Overdose and Emergency Response

Overdose and when to seek help

Official regulatory information for Tacrolimus Ointment emphasizes that overexposure risks are primarily linked to accidental oral ingestion or excessive use over large areas of compromised skin barrier. Topical application generally results in minimal systemic absorption, but significant overexposure can lead to systemic toxicity.

Domain Regulatory Statement on Overexposure
Manifestations Systemic toxicity may present as nephrotoxicity (kidney damage), hypertension (high blood pressure), neurotoxicity (including tremors, headaches), or hyperkalemia (elevated potassium levels).
Severe Outcomes In cases of severe systemic overexposure, the risk includes serious complications such as seizures and coma.
Special Risk Patients with hepatic impairment or skin conditions like generalized erythroderma have a higher potential for systemic absorption and toxicity.

Immediate medical attention must be sought, and a Poison Control Center contacted immediately if the ointment is accidentally swallowed (ingested). Medical advice should also be sought if an excessive amount is used or if any symptoms of systemic unwellness occur. Management of overexposure is strictly symptomatic and supportive, as no specific antidote is known for tacrolimus, according to regulatory documents.

Therapeutic Uses of Tacro-Tic

What Tacro-Tic Treats: Main Uses and Benefits

The primary therapeutic use of this medicine is for the symptomatic management of chronic conditions, specifically moderate to severe Atopic Dermatitis (Eczema). It is commonly applied in patients, including children 2 years and above, who are appropriate candidates for alternative supportive management.

This medicine is generally utilized for the sustained management of conditions characterized by periods of heightened symptoms. It is used for managing symptom clusters that become more disruptive during flare-ups, including intense itching (pruritus), pronounced redness (erythema), and swelling of the skin. The medication helps support patients during difficult episodes by easing distress and assists with maintaining functional stability.

The treatment is considered relevant in clinical settings that involve acute or unstable symptom patterns, and is applied when appropriate for conditions involving inflammatory or irritative processes.

“The primary purpose is to provide supportive relief during symptomatic phases, helping to ease the overall symptom burden when manifestations become difficult to tolerate.”


Quick Fact: Relief for Intense Itching (Pruritus) and Visible Inflammation

It is commonly used to manage inflammation in specific, sensitive skin areas like the face, neck, and skin folds, and may help contribute to improved comfort when symptoms interfere with routine activities.

Regulatory References

  1. European Medicines Agency (EMA) overview of Protopic

Eligibility and Restrictions for Use

Eligibility Map: Who Can and Cannot Use Tacro-Tic

Official regulatory documents define strict population-based rules for using tacrolimus ointment. These rules establish who is eligible and who must not use the medicine.


Population Group Eligibility Status
Adults (mathbfge 16 years) Eligible for both mathbf0.03% and mathbf0.1% strengths.
Children (mathbf2-15 years) Eligible for the mathbf0.03% strength mathbfonly.
Infants (mathbf< 2 years) mathbfNot mathbfrecommended until further data are available.

Contraindications (Absolute Non-Eligibility): The medicine mathbfmust mathbfnot mathbfbe mathbfused by individuals with a history of hypersensitivity to mathbftacrolimus, to any component of the ointment, or to mathbfmacrolides mathbfin mathbfgeneral. It is also mathbfcontraindicated for patients with congenital or acquired immunodeficiencies or those receiving systemic immunosuppressive therapy.

Conditions Requiring Caution or Restriction: Use is not recommended in patients with genetic skin barrier defects like Netherton's syndrome due to the risk of increased systemic absorption. Caution is specifically required for patients with hepatic mathbffailure. The ointment should also mathbfnot mathbfbe mathbfapplied to areas with mathbfclinical mathbfinfections or mathbfpotentially mathbfmalignant mathbflesions mathbfuntil mathbfcleared.

Pregnancy and Lactation Status: The ointment is mathbfnot mathbfrecommended for use during mathbfpregnancy unless clearly necessary, as the potential risk to humans is unknown. Breastfeeding is also mathbfnot mathbfrecommended during treatment.

What should I know about interactions with other medicines?

Tacro-Tic (tacrolimus) is subject to numerous officially documented drug and product interactions, primarily due to its metabolism by the Cytochrome P450 3A (CYP3A) enzyme system and its action as a substrate for the P-glycoprotein (P-gp) transporter. Changes in the activity of these systems can significantly alter Tacro-Tic blood concentrations, potentially leading to overexposure and toxicity or underexposure and organ rejection risk.

Clinically Significant Interactions

Interacting Product Category Examples Listed in Labeling Regulatory Restriction/Implication
Strong CYP3A Inhibitors Ketoconazole, Itraconazole, Ritonavir, Clarithromycin, Nelfinavir Increase Tacro-Tic concentrations; Dose adjustment and close therapeutic drug monitoring (TDM) are required. Co-administration with Nelfinavir is avoided.
Strong CYP3A Inducers Rifampicin, Carbamazepine, Phenytoin, St. John's Wort Decrease Tacro-Tic concentrations; Dose adjustment and close TDM are required.
Nephrotoxic/Neurotoxic Drugs Ciclosporin, Aminoglycosides, NSAIDs, Ganciclovir Increased risk of additive renal and neurological toxicity. Simultaneous use with ciclosporin is not recommended, and therapy should be separated by 12 to 24 hours.
Other Grapefruit, Grapefruit Juice, Alcohol Avoid consumption as they can significantly alter drug exposure and increase toxicity risk. The use of live attenuated vaccines is also avoided.

Mechanism of Action

Mechanism of Action: Intracellular Inhibition

Tacro-Tic functions as a calcineurin inhibitor, operating primarily within T-lymphocytes to modulate the adaptive immune response. The compound first enters the T-cell and binds to the intracellular protein FK506-Binding Protein 1A (FKBP1A), forming a stable drug-protein complex.

This complex then binds to and inhibits the enzymatic activity of calcineurin (Protein Phosphatase 3). Inhibition of calcineurin prevents the dephosphorylation and subsequent nuclear translocation of the transcription factor NFAT (Nuclear Factor of Activated T-cells). The resulting lack of active NFAT prevents the transcription of genes necessary for T-cell function, including the gene for the activating cytokine, Interleukin-2 (IL-2).

The final intracellular consequence is the blockade of T-cell proliferation and differentiation, which results in the reduction of cellular immune responsiveness throughout the physiological system.

Dosage and Administration Information

How to Use Tacro-Tic

The administration of Tacro-Tic (Tacrolimus Ointment) follows specific patterns for both acute flare treatment and long-term maintenance. The medicine is designed exclusively for topical application to the skin.

Dosing and Frequency

Patient Group Strength and Initial Frequency Treatment Pattern
Adults (16+ years) 0.1% strength applied twice daily (bid). Use 0.1% for flares, reducing frequency or strength (0.03%) as skin lesions clear.
Children (2–15 years) Restricted to 0.03% strength, applied twice daily. Initial period is followed by reduction to once daily application until the condition resolves.

Tacro-Tic is intended for short-term management of flares and intermittent long-term use for prevention; continuous daily use is not the prescribed pattern. Maintenance therapy involves applying the ointment only twice weekly to commonly affected areas to prevent recurrence.

Procedural Administration Constraints

The ointment must be applied as a thin layer and gently rubbed into the entire affected skin area. Specific instructions indicate that the treated skin must not be covered with occlusive dressings, bandages, or wraps, as this procedural restriction is tied to safe use. Additionally, contact with mucous membranes, such as the eyes, nose, and mouth, should be avoided during application. If a dose is missed during the scheduled application, it is recommended to apply the missed dose as soon as it is remembered and then resume the regular schedule. If no improvement is observed after two to six weeks of acute treatment, the overall therapeutic approach must be re-evaluated.

Recent Clinical Evidence

Research evidence / Overview of studies


Study 1: Efficacy in Mild-to-Moderate RA

Phase III, randomized, placebo-controlled trials investigated clinical outcomes in patients with mild to moderate rheumatoid arthritis (RA). The primary measure used was the American College of Rheumatology 20% improvement criteria (ACR20) at 12 weeks.

Research included an analysis of the timing of observed changes in key RA symptoms. Studies examined changes in measures of pain and joint swelling, and assessed whether a reduction in disease activity was maintained over time. This agent was studied as a potential option for initial treatment in some patient cohorts.


Study 2: Safety and Adverse Event Profile

A large, open-label extension study of 5 years evaluated the long-term profile of the agent. The primary safety research investigated the occurrence of serious and non-serious adverse events, including infections, injection site reactions, and specific laboratory abnormalities.

Clinical trials investigated the long-term presence of adverse events and patient retention. Comparative studies were conducted against established treatments, and research evaluated the profile and rates of reported adverse events, such as diarrhea, nausea, tremor, headache, and increased creatinine levels. The research sought to describe the frequency of side effects and instances of patient discontinuation due to adverse events.


Study 3: Combination Therapy with Methotrexate (MTX)

A separate study examined the outcome of the agent when administered in combination with methotrexate (MTX) versus MTX alone in patients with an insufficient response to MTX monotherapy.

The study analyzed differences in the ACR20 response rate versus MTX monotherapy at the 6-month mark. Sub-analyses explored the use of the combination in patient cohorts with high disease activity. The study also compared changes in patient-reported outcomes, such as the Health Assessment Questionnaire Disability Index (HAQ-DI).

The research focused on quantifying the additional potential change in disease measures achieved by adding the agent to an existing MTX regimen.

Key Studies & References American College of Rheumatology Guideline for the Management of Rheumatoid Arthritis

Frequently Asked Questions (FAQ)

Common questions about Tacro-Tic (FAQ)


Q: How quickly does Tacro-Tic start to work after I begin using it?

Studies and official information indicate that patients commonly start seeing some improvement in their condition within one week of beginning treatment. Patients experiencing no improvement after two weeks or worsening symptoms after six weeks should consult their healthcare provider.


Q: What are the most common side effects people report when taking Tacro-Tic?

According to official product information, the most common side effects reported at the site of application are a burning sensation and pruritus (itching). These local reactions are typically observed during the first few days and often improve within a week. Other common effects can include redness (erythema), headache, and flu-like symptoms.


Q: How long can a person safely stay on Tacro-Tic treatment?

Official regulatory documents advise that continuous, long-term use of Tacro-Tic should be avoided. The medicine is intended for short-term management of acute flares and intermittent long-term use for prevention. The recommended treatment approach is intermittent, and data supporting continuous daily use beyond one year are limited in regulatory documents.


Q: Can Tacro-Tic be used for skin conditions on the face or sensitive areas?

The ointment should not be applied to mucous membranes, such as the eyes, nose, or mouth, and contact with these areas should be avoided during application. Official product information also advises against applying the medicine to areas with active infections or potentially malignant lesions.


Q: What should I do if my condition seems to worsen after starting Tacro-Tic?

If your skin condition has not improved after 6 weeks of acute treatment, or if the symptoms appear to worsen, regulatory guidance recommends consulting your healthcare provider. A medical assessment may be required to review the treatment plan.


Q: Can I use cosmetic products while being treated with Tacro-Tic topical?

If a moisturizer is part of a treatment plan, official labeling suggests that it should be applied to the skin after applying the Tacro-Tic ointment. Consulting a healthcare provider is recommended for guidance on using non-medicated products while on treatment.


Q: What is the half-life of Tacro-Tic in the body?

The half-life refers to the time it takes for the drug level in the body to be reduced by half. Following topical application, studies show that Tacrolimus is minimally absorbed into the bloodstream. In pediatric patients, the mean apparent half-life has been reported to be approximately 66 hours.


Q: Do you need a special diet while using Tacro-Tic?

While on treatment, regulatory documents recommend that you avoid consuming grapefruit or grapefruit juice. These products have the potential to alter the drug's exposure in the body, which is why avoidance is recommended. No other specific general dietary changes are mandated in the official labeling.


Q: What happens if I accidentally miss a dose of Tacro-Tic?

Official guidance suggests that if a dose is missed, applying the dose as soon as it is remembered and then returning to the regular schedule. It is important not to apply a double dose of the ointment to compensate for the missed application.


Q: Does sun exposure make the side effects of Tacro-Tic worse?

Yes, official labeling requires patients to minimize or avoid exposure to both natural and artificial UV light, including tanning beds. Increased sensitivity to sunlight and the potential for a photosensitivity reaction are listed as possible side effects, suggesting UV light should be avoided during treatment.


Q: Is Tacro-Tic considered a first-line treatment for its primary use?

According to the FDA and other regulatory agencies, Tacro-Tic is considered a second-line treatment for atopic dermatitis (eczema). This means it is typically recommended for patients who have not responded adequately to other prescription topical medicines.


Q: How often do people need blood tests when they are on Tacro-Tic?

Therapeutic drug monitoring (TDM), which involves regular blood testing to measure drug levels, is typically associated with the systemic (oral) use of tacrolimus. Routine blood testing is generally not required for topical use. However, monitoring of drug levels may be considered by a healthcare provider under certain circumstances where increased absorption is suspected.


Q: Are there any specific vitamins or supplements to avoid while on Tacro-Tic?

The herbal supplement St. John's Wort is listed in the official drug interaction information as a product that should be avoided because it can significantly decrease drug concentrations. It is important that patients communicate all medications, vitamins, and supplements to their healthcare provider.


Q: What are some less common but serious side effects of Tacro-Tic that I should watch out for?

The official Boxed Warning notes rare post-marketing reports of lymphoma and skin cancer in patients using topical calcineurin inhibitors, which is a factor in regulatory advice against continuous long-term use. Other rare but serious effects reported include acute renal failure and seizures, though the incidence of these is not fully known.


Q: Does where I store Tacro-Tic affect its potency?

Yes, to ensure the ointment remains effective, regulatory instructions mandate storage at controlled room temperature (typically 15 C to 30 C) and require that the tube be protected from heat. Improper storage conditions may impact the stability and overall effectiveness (potency) of the medicine.


Q: Is it normal to feel tired or dizzy when starting treatment with Tacro-Tic?

Official adverse reaction lists include headache (very common) and dizziness and fatigue (asthenia) as possibilities. While these side effects are not the most frequent, regulatory information indicates that feeling dizzy or tired is a possibility when using the ointment.


Q: Are there any long-term health risks associated with using Tacro-Tic?

The long-term safety of topical calcineurin inhibitors has not been established. Due to rare reports of lymphoma and skin cancer, official safety documents recommend avoiding continuous, long-term use. This potential risk is a factor in regulatory recommendations to avoid continuous, long-term use.


Q: Does using Tacro-Tic make you more susceptible to infections?

Official warnings state that the use of the ointment may be associated with an increased risk of local skin infections, most notably infections caused by the Herpes Simplex virus (e.g., cold sores). The medicine should not be applied to skin areas that have an active infection.


Q: Does Tacro-Tic cause increased sensitivity to cold or heat?

Yes, official drug information indicates that increased sensitivity of the skin to hot or cold temperatures is a reported adverse effect. Patients who experience this effect should consult their healthcare provider.


Q: Are there generic versions of Tacro-Tic available?

Yes, the active ingredient in Tacro-Tic is tacrolimus, and the FDA has approved generic versions of tacrolimus ointment. These generic products are reviewed to be therapeutically equivalent to the brand-name product.


Q: Can Tacro-Tic be combined with light therapy (phototherapy)?

Patients must generally avoid or minimize all exposure to natural and artificial UV light. Consultation with a healthcare provider is recommended if you are undergoing phototherapy, as this combination may pose increased UV-related risks.


Q: Does Tacro-Tic affect fertility in men or women?

Reproductive toxicology studies specifically assessing the effect on fertility were not performed with the topical ointment. Therefore, the official product information indicates that the effect of Tacro-Tic topical application on human fertility is currently unknown.


Q: How does alcohol consumption affect a person using Tacro-Tic?

Official product information notes that alcohol consumption may cause an adverse reaction called alcohol intolerance. This often involves a noticeable facial flushing or redness of the face and neck, even after consuming small amounts of alcohol.


Q: Can Tacro-Tic be used to treat simple rashes or hives?

Tacro-Tic is specifically approved and indicated for the treatment of moderate to severe atopic dermatitis (eczema). It is not officially indicated or recommended for treating common, simple, or non-specific rashes or hives.


Q: What is the role of Tacro-Tic in managing chronic inflammatory diseases?

Tacro-Tic is indicated for the management of chronic inflammatory diseases, specifically moderate to severe atopic dermatitis. Its role is as a second-line treatment used for both active control of disease flares and for intermittent long-term use to prevent recurrence.


Q: Are there any specific lifestyle changes recommended when using Tacro-Tic?

The two main lifestyle constraints are minimizing or avoiding exposure to all UV light (sunlight and artificial sources) and avoiding the consumption of grapefruit and grapefruit juice. Any additional guidance from a healthcare team should be followed.


How should Tacro-Tic be stored and disposed of?

Storage and Disposal of Tacro-Tic Ointment

The official labeling for Tacro-Tic (tacrolimus) Ointment mandates specific conditions to maintain product stability and ensure safety.


Storage Requirements

Classification Condition
Temperature Store at controlled room temperature, typically 15 C to 30 C.
Protection Must be protected from heat.
Container Keep the tube re-capped tightly and store in the original container.
Child Safety Keep the medicine out of the reach of children.
In-Use Stability Discard the ointment 12 months after first opening the tube.

Disposal Instructions

Disposal of any unused or expired ointment must strictly follow local requirements. The medicine must not be discarded via household waste or poured down the drain or into wastewater.

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

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