Colestrim

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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 Colestrim

Colestrim is a prescription-only medicine used to modulate blood fat levels. It contains the synthetic compound Fenofibrate, which belongs to the class of fibric acid derivatives.

Property Description
Active ingredient Fenofibrate (pro-drug)
Form Oral tablets or capsules
Pharmacological class Fibrate; PPAR alpha Agonist
General purpose Lipid-regulating agent
Origin Synthetic compound

Colestrim Identity: What Type of Medicine is Fenofibrate?

Fenofibrate, the single active substance in Colestrim, is a Peroxisome Proliferator-Activated Receptor alpha (PPAR alpha) agonist, a mechanism that directly influences how the body processes lipids. This classification describes how the medicine works by modulating genetic expression related to fat breakdown and transport. The substance is administered as a pro-drug that is quickly converted to fenofibric acid within the body to achieve its systemic effect. Colestrim is prepared as a single-ingredient product in an oral dosage form, specifically tablets or capsules, using solid oral excipients for consistent delivery. Unlike similar formulations focusing solely on cholesterol synthesis inhibition, Fenofibrate is noted for its potent effects on triglyceride clearance.


The General Purpose of Colestrim: A Lipid-Regulating Agent

The fundamental role of Colestrim is to address the imbalances of fats in the plasma, medically termed dyslipidemia, which often affects adult patients with persistent lipid abnormalities. Fibrate therapy works to significantly lower high concentrations of triglycerides and increase levels of high-density lipoprotein (HDL) cholesterol. The primary benefit of this lipid-regulating agent is the normalization of the lipid profile through the promotion of fat catabolism and clearance. This targeted metabolic action is the essential reason for its prescription, helping to modify abnormal blood fat parameters in patients diagnosed with these conditions.

Regulatory References

  1. NIH MedlinePlus
  2. prescription-only
  3. Fenofibrate
  4. Peroxisome Proliferator-Activated Receptor alpha (PPAR \alpha) agonist
  5. fibric acid derivatives
  6. pro-drug
  7. fenofibric acid
  8. triglycerides
  9. high-density lipoprotein (HDL) cholesterol
  10. lipid-regulating agent

What side effects are possible with Colestrim?

Colestrim contains Fenofibrate, a prescription-only medicine classified as a lipid-regulating agent. The regulatory safety profile details potential adverse effects based on frequency and affected physiological systems, as documented by official governmental health authorities.

Regulatory Classification of Adverse Reactions

Adverse effects are categorized by System-Organ Class (SOC), including Hepatobiliary, Musculoskeletal, Renal, and Vascular disorders. The most commonly reported adverse reactions in clinical trials include abnormal liver tests (increased AST/ALT), increased Creatine Phosphokinase (CPK) levels, and rhinitis. Myalgia (muscle pain) is also frequently noted

in the safety profile.


Serious Adverse Reactions and Constraints

The official labeling documents rare but serious adverse reactions, such as Rhabdomyolysis, Severe drug-induced liver injury, Pancreatitis, and Venothromboembolic disease (e.g., DVT/PE).

Safety restrictions specify that this medicine is contraindicated in patients with severe renal impairment, active liver disease, and pre-existing gallbladder disease. The risk of serious myopathy is increased when Fenofibrate is co-administered with statins. Furthermore, use is contraindicated in nursing mothers.

Some safety patterns are documented as time-related; for instance, hematologic changes may stabilize during long-term administration, while liver enzyme increases may be dose-related.

Overdose and Emergency Response

Overdose and When to Seek Help

Regulatory information confirms that experience with Colestrim (Fenofibrate) overdosage is limited to anecdotal cases, with the most common clinical manifestation of toxicity being Gastrointestinal (GI) distress.

In the event of overdosage, immediate medical attention is required. Official regulatory documents specify that no specific antidote or targeted treatment is available, defining management as entirely symptomatic and supportive care.


Required Emergency Actions

Due to the lack of a specific reversal agent, the official approach focuses on procedural steps and continuous observation. General supportive care must be initiated, which includes continuous monitoring of vital signs and the patient's clinical status.

For recent overdosage, procedures to eliminate unabsorbed drug, such as inducing emesis or performing gastric lavage, are described in regulatory labeling. The medicine's extensive binding to plasma protein means that advanced interventions such as hemodialysis are not expected to be useful.

Patients with severe renal impairment are noted to have reduced drug clearance, which is a critical factor that increases the potential risk for toxicity in an overdose scenario. Seek medical help immediately if overdosage is suspected.

Therapeutic Uses of Colestrim

What Colestrim Treats: Main Uses and Benefits

The primary therapeutic use of Colestrim (colestipol hydrochloride) is for helping with elevated blood cholesterol levels, which is considered relevant in contexts involving heightened systemic burden. It is considered relevant in conditions characterized by periods of heightened symptoms and is applied across therapeutic domains where additional symptomatic support is needed alongside other measures.

The medicine is generally considered relevant when supportive symptom management is appropriate. It is commonly used across conditions presenting with acute episodes, which includes managing symptoms associated with primary hypercholesterolemia. It may also be used in situations involving certain distressing symptoms, such as pruritus (itching) linked to partial biliary obstruction. The overall intent is to provide support that helps ease the overall symptom burden.

This assistance is often used during phases when symptoms become more noticeable, particularly in clinical settings that involve acute or unstable symptom patterns. It may assist with maintaining functional stability.

Quick Fact: Supports patients during episodes of heightened discomfort. (The medicine assists with maintaining a sense of stability when symptoms are more noticeable.)

Eligibility and Restrictions for Use

Colestrim (fenofibrate) is a prescription medicine used to help lower cholesterol and triglycerides in the blood. Eligibility to use this medication is strictly defined by regulatory bodies to avoid serious health risks.

Populations that Must Not Use Colestrim (Contraindicated)

Use of Colestrim is prohibited for patients with the following conditions or states, as it may lead to severe complications:

  • Active Liver Disease: Includes primary biliary cirrhosis and persistent, unexplained abnormal liver function test results.
  • Severe Renal Impairment: Specifically, severe kidney dysfunction (e.g., eGFR less than 30 mL/min/1.73 m^2), including patients receiving dialysis.
  • Pre-existing Gallbladder Disease (e.g., gallstones).
  • Nursing Mothers (breastfeeding).
  • Hypersensitivity: Known allergy to fenofibrate, fenofibric acid, or any other components of the medication. This also includes a history of photoallergy or phototoxic reactions to fibrates or ketoprofen.

Restricted and Special Consideration Populations

  • Mild to Moderate Renal Impairment: Patients with reduced kidney function (e.g., eGFR 30 to 59 mL/min/1.73 m^2) must use a reduced dose and be closely monitored. The maximum dose is restricted in this group.
  • Pregnancy: The medication is generally not recommended during pregnancy, and its use is typically avoided due to insufficient data on potential risks to the fetus.
  • Pediatric Population: Safety and effectiveness have not been established in children and adolescents under 18 years of age; therefore, use is not recommended.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Colestrim (Fenofibrate) has officially documented interaction patterns with several medicinal product classes and substances. These interactions are classified by regulatory authorities as clinically significant or requiring strict administration constraints. The primary documented mechanisms involve pharmacodynamic risk escalation and the modification of drug exposure. No drug-drug combination is formally listed as a strict contraindication, but several combinations are explicitly restricted.

Interacting Substance/Class Official Interaction Outcome
HMG-CoA Reductase Inhibitors (Statins) Increased risk of myopathy and rhabdomyolysis (muscle toxicity).
Coumarin Anticoagulants (e.g., Warfarin) Potentiation of effect, leading to a prolongation of the Prothrombin Time/INR.
Immunosuppressants (e.g., Cyclosporine) Risk of reversible renal function impairment.
Bile Acid Resins (e.g., Colestipol) Reduced absorption of Fenofibrate.

Regulatory Constraints and Considerations

Due to the reduced absorption outcome, a mandatory timing rule is documented: Fenofibrate must be taken at least 1 hour before or 4 to 6 hours after the Bile Acid Resin. Co-administration with other Fibrates is restricted due to the additive risk of serious muscle toxicity. Furthermore, the risk of serious muscle toxicity with Statins is noted as elevated in specific populations, including geriatric patients and those with existing renal impairment or uncontrolled hypothyroidism.

Mechanism of Action

Colestrim (Fenofibrate) functions as a selective agonist for the nuclear receptor Peroxisome Proliferator-Activated Receptor alpha (PPARα), primarily in liver and muscle cells. This interaction initiates the transcription of target genes governing lipid and lipoprotein metabolism. This molecular action results in a dual effect on plasma lipid particles. First, the mechanism promotes the synthesis of Lipoprotein Lipase (LPL) while simultaneously reducing the expression of its inhibitor, Apolipoprotein C-III (ApoC-III). This cascade leads to the accelerated hydrolysis and clearance of triglyceride-rich VLDL and chylomicrons, directly resulting in a decrease in plasma triglyceride concentrations. Second, the activation of PPARα increases the expression of Apolipoprotein A-I (ApoA-I) and ApoA-II. This targeted modulation supports the formation and maturation of High-Density Lipoprotein (HDL) particles, contributing to an increase in HDL-C concentrations within the bloodstream.

Dosage and Administration Information

Administration Guidelines for Colestrim (Fenofibrate)

Colestrim is administered once daily as an oral tablet or capsule, and its use is intended strictly as an adjunct to an appropriate lipid-lowering diet. Dosing regimens for adults vary significantly based on the specific tablet or capsule formulation, but generally fall within a range of 90 mg to 200 mg per day for primary hyperlipidemia or mixed dyslipidemia.

The most critical administration constraint is the requirement for food. Some formulations must be taken with meals to ensure optimal drug absorption, while others may be taken without regard to meals. Regardless of the formulation, the capsules or tablets must be swallowed whole and should not be crushed, broken, dissolved, or chewed.

Procedural and Population-Specific Rules

Therapy requires routine assessment of lipid levels at 4- to 8-week intervals during the initial phase of treatment. Treatment is formally discontinued if an adequate therapeutic response is not achieved after two months at the maximum recommended dose.

Dose Adjustment: Patients with mild to moderate renal impairment (eGFR 30 to <60 mL/min/1.73 m^2) require a lower initial dose (e.g., 48 mg or 43 mg once daily, depending on the product) and subsequent dose increases must be evaluated against effects on renal function. Dose selection for older adults is also determined on the basis of assessed renal function.

Co-Administration Timing: When taken alongside bile acid binding resins (such as Colestipol), Colestrim must be administered at least 1 hour before or 4 to 6 hours after the resin to prevent interference with its absorption. If a dose is missed, patients are advised not to take an extra dose and to resume treatment with the next scheduled dose.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Colestrim (Fenofibrate)

1. Evidence for use in Primary Hypercholesterolemia and Mixed Dyslipidemia

Research exploring the effects of Colestrim on blood fat levels includes large, long-term randomized controlled trials (RCTs) and systematic reviews. These studies were primarily applied in research contexts involving fluctuating or unstable symptoms of dyslipidemia in adult patients. Studies monitored the impact on key outcomes related to systemic or functional imbalance, specifically measuring shifts in serum Triglycerides (TG), Total Cholesterol, LDL-C, and HDL-C.

Findings describe patterns observed in the studies where lower concentrations of triglycerides and higher concentrations of HDL-C were measured during the study period. However, when large, long-term trials extended their focus to major cardiovascular outcomes—such as the incidence of heart attack or stroke—the findings for the overall patient population studied did not establish evidence for a broad cardiovascular benefit compared to control groups. These results reflect the specific conditions under which they were conducted.

2. Evidence for use in Severe Hypertriglyceridemia

Colestrim was studied for its use in conditions involving periods of heightened symptoms, specifically in patients with markedly high concentrations of triglycerides, which are associated with the potential risk of acute pancreatitis. The evidence derived from these settings focused on monitoring physiological strain or stress as reflected by triglyceride levels, typically defined as 500 mg/dL or greater.

Research highlights changes measured during the study period, consistently reporting a pattern of significant reduction in these extremely high triglyceride levels. This finding contributes to the research base regarding severe hypertriglyceridemia. The data reflects the regulatory context concerning changes in these extremely high lipid levels.

3. What is Still Uncertain About the Research

Research highlights what is known—and what is still uncertain—about the medicine. The primary uncertainty lies in the area of cardiovascular event outcomes; despite consistent findings related to changes in blood fat levels, major trials exploring cardiovascular outcomes did not establish evidence for a broad cardiovascular benefit across the entire population studied. Evidence is limited regarding the long-term effects, with follow-up durations being limited in certain specific patient subsets. Furthermore, data are still emerging concerning the clinical relevance of certain subgroup findings, meaning these research descriptions are based on group patterns, not personal outcomes.

Key Studies & References Effects of fenofibrate on cardiovascular events and all-cause mortality in type 2 diabetes: a randomised controlled trial (FIELD Study)

Frequently Asked Questions (FAQ)

Common questions about Colestrim (FAQ)


Q: Why do people say Colestrim helps with bile acid?

A: Regulatory information indicates the drug is classified as a fibric acid derivative, not a bile acid sequestrant. Research does show an effect on cholesterol processing, but the primary focus of the clinical data is on the drug's impact on serum lipid levels.


Q: How long does Colestrim usually take to start working?

A: Clinical trials generally evaluate changes in serum lipid values after 2 to 3 months of continuous administration. This period is consistently used in studies for assessing the drug’s observed effects on cholesterol and triglyceride levels.


Q: Are there any specific foods I should avoid while on Colestrim?

A: Regulatory documents state that Colestrim is intended to be used as an adjunct to an appropriate lipid-lowering diet. This means the dietary measures instituted prior to therapy are generally expected to be continued. Adherence to a lipid-lowering diet is important, as the medicine works best as part of a comprehensive management plan.


Q: Is Colestrim safe for long-term use?

A: Official drug information indicates that Colestrim is intended for long-term therapy for the conditions it treats. Consistent with regulatory guidance, the potential risks and benefits of long-term administration are regulatory requirements for periodic assessment by a medical professional.


Q: Can I take Colestrim if I have a thyroid condition?

A: According to official labels, Colestrim should be used with caution in patients who have hypothyroidism, or an underactive thyroid. Regulatory guidance indicates that any uncontrolled hypothyroidism should typically be adequately treated before therapy with this medication is initiated.


Q: Is there a maximum amount of time someone can be on Colestrim?

A: Regulatory information indicates that Colestrim is intended for long-term therapy when a therapeutic response is achieved. However, it also states that if a significant therapeutic response is not achieved after 3 months of treatment at the maximum dose, the therapy should be discontinued. There is no official time limit for patients who are responding appropriately.


Q: Why is Colestrim sometimes given with other lipid-lowering drugs?

A: Colestrim is sometimes given with other lipid-lowering drugs, such as statins, to achieve a further alteration in lipid levels and complement the overall treatment goal. Official documents caution that this combination is associated with an increased risk of muscle problems, and regulatory information notes the need for careful medical monitoring.


Q: Is Colestrim effective for all types of high cholesterol?

A: Official indications state that Colestrim is used to lower high triglyceride levels and to reduce elevated total cholesterol, LDL-cholesterol (sometimes called 'bad' cholesterol), and Apo B in patients with primary hypercholesterolemia or mixed dyslipidemia. The drug’s mechanism is specifically designed to regulate these particular components of the lipid profile.


Q: Does Colestrim cause weight gain or loss?

A: According to safety data, weight change is not listed among the commonly reported adverse effects of Colestrim. However, some post-marketing reports have documented instances where patients have experienced weight loss.


Q: Is it common to have constipation when taking Colestrim?

A: Official documents list constipation as a common, non-serious side effect that has been reported in clinical trials. If this or any other side effect becomes severe or bothersome, official guidance notes that a healthcare professional should be consulted.


Q: Can I take Colestrim if I have diabetes?

A: Official product information states that Colestrim should be used with caution in patients with diabetes. Additionally, regulatory guidance indicates that if the patient has uncontrolled Type 2 Diabetes Mellitus, this condition is typically managed before initiating treatment with Colestrim.


Q: Does Colestrim interact with common painkillers like ibuprofen?

A: Yes, regulatory and clinical data indicate that Fenofibrate may affect the way the body handles certain common painkillers, such as ibuprofen. This interaction may increase the blood levels and effects of the painkiller. Official information indicates that combining these medicines may necessitate dosage adjustments and/or increased monitoring.


Q: Can Colestrim be taken by someone with high blood pressure?

A: High blood pressure itself is not listed as a contraindication for using Colestrim. However, official information suggests caution and close monitoring for patients with pre-existing fluid retention or a history of heart failure. This is especially relevant because other interacting medicines, like certain painkillers, may sometimes worsen those conditions.


Q: Is Colestrim an old or new type of treatment?

A: Colestrim belongs to the class of lipid-lowering drugs known as fibric acid derivatives (or fibrates). This class of medicine has been on the market for an already long marketing period, making it a well-established type of treatment for lipid management.


Q: Why does the packaging say to take Colestrim with fluid?

A: According to official administration instructions, the tablets or capsules should be swallowed whole with a full glass of water. This is a standard procedure to help ensure the medicine is properly swallowed and does not stick in the esophagus.


Q: Does alcohol interact with Colestrim?

A: Official warnings indicate that while there is no direct chemical interaction between the drug and alcohol, patients should generally limit consumption. Excessive alcohol intake can raise triglyceride levels, which works against the intended effect of the medicine. Furthermore, it may increase the risk of liver damage in combination with the drug.


Q: Will taking Colestrim affect my energy levels?

A: Regulatory documents list potential adverse effects that may affect energy levels. These include asthenia (a lack of energy or strength) and general fatigue or unusual tiredness.


Q: Can Colestrim cause stomach discomfort?

A: Yes, official documents state that common side effects reported in clinical trials include various gastrointestinal effects. These reported effects include stomach pain, abdominal pain, nausea, and flatulence (gas).


Q: What is the difference between Colestrim powder and tablets?

A: Colestrim is available in various official formulations, including tablets, capsules, and sometimes micronized or nano-crystal powders. These different forms are developed primarily to improve the absorption and bioavailability (the rate at which the body can be utilized) of the active ingredient.


Q: Are there generic versions of Colestrim available?

A: Yes, Colestrim contains the active ingredient fenofibrate, and the medication is available under this generic name as well as several other brand names. This information is commonly found in drug databases and regulatory listings.


Q: Is it normal to feel a bit bloated after starting Colestrim?

A: Official safety data indicates that gastrointestinal disturbances, including flatulence (gas) and gas, have been reported as side effects in clinical trials. This suggests that feeling bloated due to gas is a reported experience.


Q: Can I take Colestrim with multivitamins?

A: Official patient counseling information advises that a healthcare professional should be informed of all medications, including vitamins and nutritional supplements, they are taking. This is necessary so the doctor can monitor for potential side effects or unexpected outcomes.


Q: Are headaches a potential side effect of Colestrim?

A: Yes, the official adverse reaction list includes headache as a common side effect that has been reported in clinical trials.


Q: What should I do if the side effects of Colestrim are bothersome?

A: Official patient instructions note that a doctor should be contacted if mild side effects become severe or do not go away. For any symptoms of serious side effects, such as unexplained muscle pain, fever, swelling, or yellowing of the skin or eyes, regulatory information notes that immediate medical attention is appropriate.


Q: What happens if I stop taking Colestrim suddenly?

A: Official patient instructions advise against discontinuing the medication or changing the dosage without first consulting a healthcare professional. Changes to treatment should only be made under medical guidance and supervision.


Q: Does Colestrim interact with herbal supplements?

A: Official patient counseling information advises that a healthcare professional should be informed of all prescription and non-prescription products, including herbal products, they are taking. This allows the doctor to monitor for potential side effects or interactions that might not be fully documented.


Q: What if I vomit after taking Colestrim?

A: Vomiting is listed in official safety documents as a potential symptom of serious adverse reactions, such as pancreatitis or rhabdomyolysis. If vomiting occurs, especially if it is severe or accompanied by other serious symptoms, regulatory information indicates that seeking immediate medical attention is appropriate.

How should Colestrim be stored and disposed of?

How to Store and Dispose of Colestrim (Colestipol Hydrochloride)

Requirement Official Instructions
Temperature Store at controlled room temperature (20 to 25 C / 68 to 77 F). Brief excursions up to 30 C are permitted.
Protection Must be protected from moisture.
Container Keep the medicine in its original container and ensure the cap is securely replaced after each use.
Child Safety Keep out of the reach of children.
Disposal Do not dispose of unused or expired product via household wastewater or sewage systems. Follow local regulatory requirements for disposal.

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

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