Pro Lertus

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Medically reviewed

Laura Arias

Last updated on 22/12/2025

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

Overview of Pro Lertus

Pro Lertus is a specialized, prescription-only medication used for the effective management of mild to moderate pain and inflammation. It belongs to the pharmacological class of Nonsteroidal Anti-inflammatory Drugs (NSAIDs) and is often prescribed for chronic conditions, including rheumatoid arthritis, osteoarthritis, and ankylosing spondylitis, as well as acute pain such as menstrual cramps.


Quick Facts

Property Description
Active Ingredient Diclofenac Cholestyramine
Form Prolonged-release capsule
Pharmacological Class NSAID
Common Use Management of inflammatory pain
Rx Status Prescription Only

Formulation and Key Features

The active ingredient in Pro Lertus is diclofenac cholestyramine in a prolonged-release 140 mg capsule. Diclofenac is one of the most widely used NSAIDs globally.

This specific formulation is a key differentiator. The diclofenac is bound to cholestyramine, a resin, which is designed to provide an optimal release profile. This specialized formulation is designed to deliver a rapid analgesic effect followed by a prolonged, sustained release of the active compound. This dual-action strategy provides consistent, long-lasting pain relief that is beneficial for managing persistent chronic pain.

As a brand-name product manufactured by Tecnofarma, Pro Lertus is primarily intended to offer a therapeutic advantage over standard, immediate-release diclofenac forms, making it a targeted option for patients requiring reliable pain management with a reduced dosing frequency.

Regulatory References

  1. National Library of Medicine (NLM) Drug Information

What side effects are possible with Pro Lertus?

Possible Side Effects and Safety Information

The information below is structured according to the standard safety domains mandated by government regulatory agencies worldwide (such as the FDA, EMA, and Health Canada). These domains organize and present the official safety profile of a medicine based on documented clinical and post-marketing data.

However, official, publicly documented safety information specific to Pro Lertus is not readily available from major government regulatory sources at this time. Consequently, comprehensive details regarding specific adverse reaction frequencies and associated risks as defined by a health authority cannot be provided.


Regulatory Safety Structure (Based on Official Standards)

In standard regulatory documents, the official safety profile is typically structured by the following categories:

Safety Domain Regulatory Standard Classification
Adverse Reactions Classified by frequency (e.g., Very Common, Common, Rare) and grouped by System-Organ Class (e.g., Nervous System Disorders, Gastrointestinal Disorders).
Serious Adverse Reactions A distinct listing of side effects identified as medically significant and warranting immediate clinical attention, as defined by the authorizing body.
Safety Limitations Formal Contraindications (situations where the drug must not be used) and Precautions (conditions requiring special caution or monitoring).
Population-Specific Data Safety notes related to use in specific groups, such as pregnant women, pediatric patients, or those with severe organ impairment (e.g., kidney or liver disease).

This mandatory regulatory structure ensures that patients and healthcare providers receive a complete, tiered view of the medicine's documented risks, beginning with common effects and explicitly defining the most serious risks and official restrictions. When an official regulatory document becomes publicly available for Pro Lertus, it will contain these specific, fact-based safety details.

Overdose and Emergency Response

Overdose and When to Seek Help

The overdose profile for Pro Lertus, containing the active NSAID diclofenac, is defined by potential systemic toxicity requiring immediate medical attention, as mandated by regulatory authorities.

Overdose Scope

Element Official Regulatory Statement Summary
Documented Manifestations Symptoms may include nausea, vomiting (potentially bloody), epigastric pain, diarrhea, drowsiness, dizziness, and confusion. Signs may also involve changes to blood pressure (hypotension/hypertension) and increased heart rate.
Severe Systemic Outcomes Overdose carries the risk of life-threatening complications, including acute renal failure, gastrointestinal bleeding or perforation, respiratory depression, coma, and seizures. The cholestyramine component specifically introduces a documented risk of gastrointestinal obstruction.
Emergency Actions Seek emergency medical attention immediately upon suspected overdose. No specific antidote is known for diclofenac overdose. Management is symptomatic and supportive. Activated charcoal and gastric lavage may be considered in appropriate circumstances.
Special Considerations Elderly patients face a higher risk for more serious gastrointestinal consequences. Patients with pre-existing renal or cardiac impairment require particular caution due to the documented risk of fluid retention.

Connection to the Overall Overdose Profile

Regulatory documents define this overdose profile by detailing specific clinical manifestations and associated severe risks. The mandatory requirement to seek immediate medical help stems directly from the potential for life-threatening outcomes, such as acute renal failure or perforation, and the lack of a known specific antidote, making prompt supportive care critical.

Therapeutic Uses of Pro Lertus

What Pro Lertus Treats: Main Uses and Benefits

The primary therapeutic role of Pro Lertus (diclofenac cholestyramine) is to provide symptomatic relief by moderating mild to moderate pain and easing inflammation across several key clinical domains. Its application is aligned with relief for symptoms related to inflammatory or irritative states. The prolonged-release formulation is intended to provide support for easing the overall symptom load during symptomatic periods.

The medication is commonly used across conditions characterized by long-term inflammatory activity, such as rheumatoid arthritis, osteoarthritis, and ankylosing spondylitis. It is also relevant for acute symptomatic episodes like post-traumatic pain, post-operative discomfort, low back pain, severe menstrual cramps (primary dysmenorrhea), and migraine attacks.

Relief in Chronic Inflammatory Conditions

Pro Lertus helps address symptom clusters that include pronounced joint stiffness, swelling, and persistent musculoskeletal discomfort, which generally assists with maintaining functional stability and supports general well-being during symptomatic phases.

Management of Acute Pain and Injury-Related Discomfort

The medication is generally applied in situations requiring short-term symptomatic assistance for symptoms that may become intense or disruptive, offering supportive relief during these challenging phases.

Support for Episodic and Specialized Pain

Pro Lertus is also relevant for conditions marked by recurrent, heightened symptoms, providing supportive relief that may assist with easing the overall symptom load associated with acute or episodic changes.

Quick Fact: Relief for Inflammatory Symptoms
Symptom Focus Pain, stiffness, and swelling related to inflammatory processes.
Relief Benefit Supports general well-being during symptomatic phases and assists with maintaining functional stability.

Eligibility and Restrictions for Use

The eligibility for Pro Lertus is determined by the official regulatory restrictions for its active ingredients, diclofenac (an NSAID) and cholestyramine. It is generally reserved for adults (18 years and older) under prescription.

Contraindicated Populations

Category Exclusion Condition
Allergy History Known hypersensitivity to diclofenac, or history of asthma, urticaria, or other allergic reactions after taking aspirin or other NSAIDs.
Cardiovascular Risk Established Ischaemic Heart Disease, Peripheral Arterial Disease, Cerebrovascular Disease, or Congestive Heart Failure (NYHA Class II–IV). Prohibited for pain management surrounding Coronary Artery Bypass Graft (CABG) surgery.
Organ/GI Status Active Gastrointestinal (GI) Bleeding or Peptic Ulcers; Severe Hepatic or Renal Impairment; Complete Biliary Obstruction (due to the cholestyramine component).

Age and Physiological Restrictions

  • Pregnancy: The medicine is contraindicated in the third trimester (at or after 30 weeks gestation) and use is generally avoided from 20 weeks onward due to risk of fetal renal dysfunction.
  • Pediatric Use: Safety and effectiveness are generally not established in children under 18 for most adult indications, and extreme caution is advised for the cholestyramine component due to potential for intestinal obstruction in children.
  • Conditional Use: Patients who are dehydrated or hypovolemic must have their volume status corrected prior to treatment. Older adults require caution due to increased risk of age-related adverse GI events and kidney issues.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory information documents specific interaction patterns for Pro Lertus (Diclofenac Cholestyramine), stemming from its NSAID component and its bile acid sequestrant component.

Contraindicated and High-Risk Combinations

Co-administration with other oral Nonsteroidal Anti-inflammatory Drugs (NSAIDs), including non-low-dose aspirin, is generally not recommended due to a documented increased risk of serious gastrointestinal events. The medication is also contraindicated for the treatment of peri-operative pain following Coronary Artery Bypass Graft (CABG) surgery.

Pharmacokinetic and Pharmacodynamic Interactions

The Diclofenac component interacts with substances that alter its metabolism or clearance. Co-administration with CYP2C9 inhibitors (e.g., Voriconazole) significantly increases the systemic exposure of Diclofenac. Conversely, Pro Lertus can increase the plasma concentrations of certain co-administered drugs, such as Lithium and Methotrexate, by reducing their renal clearance. Pharmacodynamically, concurrent use with Anticoagulants (e.g., Warfarin) or SSRIs/SNRIs results in a documented increased risk of bleeding. Diclofenac may also diminish the efficacy of Diuretics and ACE Inhibitors/ARBs.

Timing and Substance Separation

The Cholestyramine resin component may delay or reduce the absorption of many other oral medications (e.g., thyroid preparations, Digoxin) due to non-systemic binding. To mitigate this effect, other oral drugs must be administered at least 1 hour before or 4 to 6 hours after Pro Lertus, as stipulated in official labeling. Furthermore, the use of Alcohol is noted to increase the risk of gastrointestinal bleeding.

Mechanism of Action

The pharmacological activity of Pro Lertus is achieved through two coordinated mechanistic domains: the direct inhibition of biological targets and a specialized delivery mechanism that dictates the action's timeline.

Enzyme Inhibition and Pathway Modulation

The core mechanism involves the active molecule, diclofenac, acting as a competitive inhibitor of the Cyclooxygenase ( COX-1 and COX-2) enzymes. This molecular action directly suppresses the biosynthesis of prostaglandins—key mediators in the initiation of nociception and vascular permeability—by preventing the conversion of arachidonic acid. Additionally, the drug modulates other nociceptive pathways, such as the neuropeptide Substance P and ATP-sensitive potassium channels, leading to a reduction in peripheral nociceptor sensitization and a decrease in prostanoid-mediated vasodilation.

Mechanically Optimized Onset and Duration

The unique formulation complexed with the cholestyramine resin is a delivery mechanism that dictates the temporal kinetics of the COX inhibition. This specialized complex ensures a quick-slow release profile that rapidly achieves the necessary concentration for accelerated initial enzyme saturation. Subsequently, the prolonged release sustains the active molecule's presence, which maintains the inhibition of the prostaglandin pathway across an extended period.

Dosage and Administration Information

How Pro Lertus Is Used: Official Administration Guidelines

Pro Lertus is a specialized 140 mg prolonged-release capsule administered via the oral route. The product’s design supports a reduced dosing frequency, with a standard regimen of once daily. This schedule is essential to maintaining the desired sustained release of the active ingredient.

Official Dosing and Frequency

The typical adult dose is one 140 mg capsule taken once per day. For related Nonsteroidal Anti-inflammatory Drugs (NSAIDs), the total daily dose should generally not exceed 150 mg from all sources. Treatment is governed by the principle of using the lowest effective dose for the shortest duration possible, consistent with individual treatment goals.

Administration Scope Principle
Route of Administration Oral
Dosing Schedule Once daily
Maximum Daily Dose Typically ≤ 150 mg

Administration Conditions and Procedural Steps

For proper administration, the prolonged-release capsule must be swallowed whole with an adequate amount of liquid. It is strictly prohibited to crush, chew, or split the capsule, as this would compromise the special release characteristics of the diclofenac cholestyramine formulation and release the full dose too rapidly. The medicine may generally be taken with or immediately following food. If a dose is missed, the missed dose should be omitted; the user should not take a double dose to correct the oversight.

Population-Specific Use

For older adults, it is generally advised that treatment should be initiated using the lowest effective dose for the shortest duration. This population requires close monitoring during administration. This 140 mg prolonged-release formulation is generally not recommended for use in pediatric patients, as specific safety and efficacy data are not established for this age group.

Recent Clinical Evidence

Research was conducted exploring the diclofenac cholestyramine formulation in individuals with symptomatic Osteoarthritis (OA), a condition marked by functional limitations. The core research examined short-term Randomized Controlled Trials (RCTs) to measure outcomes related to physical discomfort and daily functioning over periods typically ranging up to three months.

Evidence for Chronic Conditions

For OA, comparisons against other diclofenac formulations were observed in trials that show patterns related to drug release and absorption. However, long-term effects are not fully established for this specific prolonged-release delivery system based on large-scale trials focused on clinical endpoints, and follow-up durations were limited.

Research was also conducted for Ankylosing Spondylitis (AS), examining how continuous versus on-demand dosing strategies related to measures of disease activity and changes in the spine over extended periods. Studies monitored changes in established scores and systemic imbalance outcomes. Comparative evidence is lacking for the specific cholestyramine formulation against placebo or other NSAIDs in large-scale trials focusing strictly on long-term structural outcomes.

Acute Pain Studies and Uncertainty

Research was evaluated in settings relevant in trials assessing short-term or episodic symptom patterns, such as those seen in primary dysmenorrhea and following certain post-operative procedures. These studies were typically acute, short-term trials focused on outcomes related to physical discomfort over very short time intervals. Certainty remains low for evidence related to general, undifferentiated post-traumatic pain, as this data is often descriptive.

Overall, evidence quality varies across studies, particularly when moving from randomized trials to post-marketing observational data. Data for certain groups, such as those with comorbidities or pediatric populations, remain insufficient. A major area of uncertainty is the research exploring whether different formulations have differing long-term outcomes, as comparative evidence is lacking in large-scale trials. Findings describe group patterns, not personal outcomes.

Key Studies & References Diclofenac Drug Information - National Library of Medicine (MedlinePlus)

Frequently Asked Questions (FAQ)

Common questions about Pro Lertus (FAQ)


Q: How quickly should someone expect Pro Lertus to start working?

The formulation of Pro Lertus is designed to provide a rapid analgesic (pain-relieving) effect. According to official product information, this is achieved by accelerating the initial enzyme saturation, which is then followed by a prolonged, sustained action of the medicine.


Q: What happens if I miss a scheduled dose of Pro Lertus?

Regulatory procedure for this medicine dictates that the missed dose be omitted entirely. Official guidance advises against taking a double dose, as this procedure is necessary to maintain the intended prolonged-release drug concentration profile and avoid rapid release of the active ingredient.


Q: Has Pro Lertus been studied in older adults, and are there different considerations?

Official guidance notes that treatment in older adults is initiated using the lowest effective dose for the shortest possible duration. This population generally requires close monitoring during administration, as stated in regulatory documents.


Q: Can Pro Lertus be taken with common pain relievers like ibuprofen or acetaminophen?

Co-administration with other Nonsteroidal Anti-inflammatory Drugs (NSAIDs), such as ibuprofen, is generally not recommended due to a documented increased risk of serious gastrointestinal events. However, official regulatory information does not note a comparable restriction for non-NSAID relievers like acetaminophen.


Q: How is Pro Lertus different from treatments that don't require a prescription?

Pro Lertus is a specialized, prescription-only formulation of diclofenac, an NSAID. The active ingredient is bound to a unique resin, which is intended to provide a rapid and sustained-release profile. This differentiates it from many standard, over-the-counter NSAID treatments.


Q: How soon after stopping Pro Lertus does it leave the body?

The drug is a combination of two components that are cleared from the body at different rates. The primary active molecule (diclofenac) has a relatively short half-life, while the resin component (cholestyramine) is not absorbed into the body and is naturally excreted through feces.


Q: Is Pro Lertus the same type of medication as [Similar Drug Name]?

Pro Lertus is classified in the pharmacological class of Nonsteroidal Anti-inflammatory Drugs (NSAIDs). It is a specialized, prolonged-release formulation of the active compound diclofenac cholestyramine.


Q: Can Pro Lertus cause tiredness or difficulty sleeping?

Potential effects on the nervous system are reported in safety documents for the drug’s components. These reported effects include dizziness or drowsiness. Difficulty sleeping (insomnia) is also noted as a non-common side effect.


Q: Is it common to feel stomach upset when starting Pro Lertus?

Gastrointestinal issues such as nausea, vomiting, indigestion, or stomach pain have been reported in safety documents for the drug’s components. Some of these effects are noted as common or less common.


Q: Can Pro Lertus affect blood pressure or heart rhythm?

Regulatory documents indicate that Nonsteroidal Anti-inflammatory Drugs (NSAIDs), including diclofenac, can potentially lead to the onset of new or worsening high blood pressure (hypertension). They are also associated with a documented risk of serious cardiovascular thrombotic events.


Q: Is Pro Lertus considered a blood thinner, or does it have a similar effect?

Pro Lertus is not classified as a blood thinner. However, its active ingredient, diclofenac, is noted in regulatory documents for potentially increasing the risk of bleeding, particularly when it is used at the same time as anticoagulant (blood-thinning) medications.


Q: Do you have to take Pro Lertus forever once you start?

Official treatment guidance is based on the principle of using the lowest effective dose for the shortest duration possible. The duration of use is consistent with individual treatment goals and is determined by a healthcare provider.


Q: Are there any known issues with using Pro Lertus during pregnancy or while breastfeeding?

The medicine is strictly contraindicated (must not be used) in the third trimester of pregnancy. For breastfeeding, the cholestyramine component is considered non-absorbed. Information for the diclofenac component indicates that general NSAID caution applies.


Q: Can men and women use Pro Lertus for the same conditions?

Yes. The medicine is prescribed for the management of specific inflammatory pain conditions, such as arthritis and ankylosing spondylitis. The official indications are not gender-specific.


Q: What should be done if a side effect of Pro Lertus feels severe?

Official safety structures categorize some side effects as 'Serious Adverse Reactions,' which are defined as medically significant events. These are noted as requiring clinical evaluation by a healthcare professional.


Q: Why do some people say they felt dizzy when they first started taking Pro Lertus?

Dizziness and vertigo are reported nervous system effects for the drug's components in safety documents. These effects may be experienced, although they are noted as less common or of unspecified frequency.


Q: Is Pro Lertus known to cause any changes in mood or anxiety levels?

Potential psychiatric effects have been described for the components of Pro Lertus. These can include changes such as feeling agitated or anxious, though regulatory documents typically report these as not common or of unspecified frequency.


Q: Does Pro Lertus contain any common allergens like gluten or lactose?

Official labeling for related diclofenac formulations often lists inactive ingredients such as lactose. Inactive ingredients are components that do not contribute to the medicine's primary effect. Official guidance notes that individuals with known allergies should consult the specific list of ingredients on the product labeling.


Q: What kinds of medical testing might be needed while taking Pro Lertus?

Patients receiving long-term treatment require periodic review for effectiveness and adverse effects. This may include monitoring blood pressure, kidney function, and blood component levels, as noted in official guidance.


Q: Is Pro Lertus a controlled substance or habit-forming?

The active components of Pro Lertus, diclofenac and cholestyramine, are not classified as controlled substances by regulatory bodies. They are therefore not considered to be habit-forming.


Q: Does Pro Lertus show up on drug screening tests?

Standard drug screening tests typically focus on detecting controlled substances, such as opioids or amphetamines. This medication is not a controlled substance and is not generally included in the scope of typical drug screens.


Q: What is the difference between the 'main uses' and 'other uses' of Pro Lertus?

The primary use of Pro Lertus is based on its NSAID effect for inflammatory pain management. Regulatory documents list specific conditions—known as indications—for which the medicine has been studied and authorized, covering a range of chronic and acute pain patterns.


Q: Is the research for Pro Lertus based on short-term or long-term studies?

Research evidence includes both short-term Randomized Controlled Trials (RCTs) and studies that monitored outcomes over extended periods. However, official documents state that the long-term effects for this specific prolonged-release formulation are not fully established.


Q: Is it true that Pro Lertus is not recommended for people with certain eye conditions?

Eye-related adverse events such as uveitis have been reported for the drug's components, though they are noted as rare. Official documents note that a review by a healthcare professional is standard practice when patients have pre-existing eye conditions.


Q: Can Pro Lertus cause weight changes?

Weight changes, including both weight loss and weight gain, have been reported for the drug's components in safety documents. However, the frequency of these events is not specified as common.


Q: Why might a patient need to have blood tests done while on Pro Lertus?

Blood tests may be necessary for patients on long-term treatment to monitor essential body functions. This includes monitoring kidney function, liver status, and blood component levels, due to known potential risks associated with NSAIDs.


Q: Is a headache a reported side effect of Pro Lertus?

Yes, headache is a reported side effect of the drug's components. It is noted in safety documents as a less common event.


Q: Can Pro Lertus affect fertility or sexual function?

Diclofenac, as an NSAID, may have potential effects on reproductive function. Furthermore, effects on sexual function have been reported for the drug's components, though these are typically not common.


Q: Is Pro Lertus FDA-approved for its primary use?

The active ingredients are contained in products that are approved by government regulatory bodies, such as the FDA, for their specified indications in pain and inflammation management.


Q: What is the purpose of the inactive ingredients in Pro Lertus tablets?

Inactive ingredients are components included to help form the capsule, ensure its stability, and support the proper release of the active ingredients within the body. They do not contribute to the medicine's primary treatment effect.


Q: Are there any common misuses of Pro Lertus that people should know about?

Official information explicitly warns against actions that compromise the prolonged-release design, such as crushing, chewing, or splitting the capsule. Additionally, the drug is prohibited for use in specific high-risk situations, such as pain management following Coronary Artery Bypass Graft (CABG) surgery.

How should Pro Lertus be stored and disposed of?

How to Store and Dispose of Pro Lertus?

Storage Requirements

Pro Lertus (diclofenac cholestyramine) must be stored at Controlled Room Temperature (typically 20 C to 25 C). The medicine must be kept in its original, tightly closed container and secured in a location that provides protection from moisture and direct light. Do not store the medicine above 30 C and do not freeze.

Child Safety

As with all prescription medication, it is mandatory to keep Pro Lertus out of the sight and reach of children.

Disposal Instructions

Unused or expired Pro Lertus must not be disposed of via wastewater or regular household waste without proper preparation. Patients are directed to utilize a drug take-back program or consult a pharmacist for guidance. If no take-back option is available, the product may be mixed with an undesirable substance, placed in a sealed bag, and then thrown in the trash, according to official guidance.

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

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