Modified citrus pectin (MCP) is a dietary supplement that has been gaining popularity in recent years due to its potential health benefits. MCP is a complex water-soluble indigestible polysaccharide that is derived from the peel and pulp of citrus fruits. It is modified by means of high pH and temperature treatment to reduce its molecular weight and improve its solubility.
MCP is a type of fiber that is known for its ability to bind to heavy metals and other toxins in the body, which can then be excreted through urine. Research has also suggested that MCP may have anti-cancer properties by inhibiting cancer cell growth and preventing cancer cells from metastasizing. Additionally, MCP has been found to have immunomodulatory effects, meaning that it can help regulate the immune system.
As a dietary supplement, MCP is generally considered safe for most people. However, it is important to note that like any supplement, it can interact with certain medications and may not be appropriate for everyone. As with any supplement, it is important to consult with a healthcare provider before taking MCP to determine if it is right for you.
Chemical Composition and Properties
Pectin and Modified Pectin
Pectin is a complex polysaccharide found in the cell walls of plants. It is a soluble fiber and is commonly used in the food industry as a gelling agent and stabilizer. Citrus pectin is a type of pectin that is extracted from citrus fruits, such as oranges, grapefruits, and lemons.
Modified citrus pectin (MCP) is a form of citrus pectin that has been chemically modified to reduce its molecular weight and increase its solubility. This modification process improves its functional properties and makes it more bioavailable. MCP has been studied for its potential health benefits, including its ability to support immune function and promote cardiovascular health.
Polysaccharide Structure
Pectin is a complex polysaccharide composed of galacturonic acid and other neutral sugars, such as arabinose, galactose, and rhamnose. The structure of pectin is highly branched and varies depending on the source of the pectin.
The modification of citrus pectin involves the removal of the neutral sugars and the reduction of the molecular weight of the galacturonic acid chains. This modification process increases the solubility of the pectin and allows it to be more easily absorbed by the body.
In conclusion, citrus pectin and modified citrus pectin are complex polysaccharides with unique chemical compositions and properties. The modification of citrus pectin improves its functional properties and makes it more bioavailable. MCP has been studied for its potential health benefits and is commonly used as a dietary supplement.
Health Benefits and Uses
As a type of soluble fiber derived from the peel of citrus fruits, modified citrus pectin (MCP) has been found to have numerous health benefits and uses. Here are some of the most notable ones:
Cancer Treatment and Prevention
MCP has shown promise in the treatment and prevention of various types of cancer, including prostate cancer. Studies have found that MCP can inhibit tumor growth and metastasis by blocking the attachment of cancer cells to the extracellular matrix. Additionally, MCP has been shown to increase apoptosis (programmed cell death) in cancer cells, which can help prevent the spread of cancer.
Cholesterol Management
MCP has been found to have cholesterol-lowering effects by reducing the absorption of cholesterol in the intestines and increasing the excretion of bile acids. In a study of patients with high cholesterol, MCP was found to reduce total cholesterol levels by 7% and LDL (“bad”) cholesterol levels by 10%.
Detoxification of Heavy Metals
MCP has been found to have chelating properties, meaning it can bind to heavy metals like lead and arsenic and help remove them from the body. In a study of children with high levels of lead in their blood, MCP was found to significantly reduce lead levels after just four weeks of treatment.
It is important to note that while MCP has shown promise in these areas, more research is needed to fully understand its potential benefits and uses. As always, it is best to consult with a healthcare professional before starting any new supplement or treatment.
Clinical Studies and Efficacy
As a researcher, I have reviewed several clinical studies on modified citrus pectin (MCP) and its potential health benefits. MCP is a type of soluble fiber derived from citrus fruits that has been modified to increase its bioavailability and efficacy.
Cancer-Related Research
Several studies have investigated the potential of MCP in cancer care. MCP has been shown to inhibit the growth and spread of cancer cells by inducing apoptosis (cell death) and inhibiting angiogenesis (the formation of new blood vessels that feed tumors).
One study found that MCP significantly reduced galectin-3 levels in prostate cancer patients, which is a protein associated with cancer progression and metastasis. Another study showed that MCP supplementation reduced PSA levels in men with prostate cancer, indicating a potential benefit in cancer treatment.
Cardiovascular Health Trials
MCP has also been studied for its potential cardiovascular health benefits. One study found that MCP supplementation significantly reduced LDL cholesterol levels in healthy adults. Another study showed that MCP improved arterial stiffness in patients with metabolic syndrome.
Overall, the available clinical studies suggest that MCP may have potential health benefits in cancer care and cardiovascular health. However, more research is needed to fully understand its safety and efficacy in humans.
Side Effects and Interactions
Adverse Reactions
As with any supplement or medication, modified citrus pectin (MCP) may cause adverse reactions in some individuals. While MCP is generally safe and well-tolerated, there have been reports of gastrointestinal side effects, such as diarrhea, in some people who take it. If you experience any adverse reactions, it is important to speak with your healthcare provider.
Medicinal Interactions
MCP may interact with certain medications, including digoxin and tetracycline antibiotics. If you are taking any prescription medications, it is important to speak with your healthcare provider before taking MCP. Additionally, individuals who are allergic to citrus fruits should avoid MCP, as it is derived from citrus pectin.
It is important to note that while there are potential interactions and side effects associated with MCP, these are generally rare and mild. However, as with any supplement or medication, it is important to speak with your healthcare provider before taking it, especially if you are taking other medications or have any underlying medical conditions.
Guidelines for Consumption
Dosage and Administration
As with any supplement, it is important to follow the recommended dosage and administration guidelines for modified citrus pectin (MCP). MCP is available in various forms, including powder and capsule supplements. The recommended dosage for MCP powder is typically 5-15 grams per day, while capsule form is typically 1-3 capsules per day. It is important to note that the dosage may vary based on the specific product and brand, so it is important to carefully read the label and follow the instructions provided by the manufacturer.
MCP is a dietary fiber that is not absorbed by the body, but rather passes through the digestive system and is excreted in the urine. Therefore, it is important to drink plenty of water when taking MCP to help with absorption and urinary excretion.
Considerations for Specific Populations
It is always recommended to consult with a doctor before taking any new supplement, especially if you are pregnant, breastfeeding, or have a medical condition. MCP has not been extensively studied in pregnant or breastfeeding women, so it is best to err on the side of caution and avoid MCP during these times.
MCP has been shown to have prebiotic effects, meaning it can help promote the growth of beneficial gut bacteria. However, individuals with certain gastrointestinal conditions, such as inflammatory bowel disease, may want to avoid MCP or consult with a healthcare professional before taking it.
It is important to note that the FDA does not regulate dietary supplements in the same way that it regulates pharmaceuticals, so it is important to do your own research and choose a reputable brand when purchasing MCP or any other supplement.

Johan Theorin is an author, editor, and competitive cyclist. He is the author of most of the content on this website, and he is the site editor. Johan has spent years researching joint health, sports performance and recovery. He is a leading biohacking expert and an experienced physiotherapist.
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