Several supplements can meaningfully lower triglycerides, but the strength of evidence varies widely. Omega-3 fatty acids have the strongest track record, with high doses reducing triglycerides by 25% to 50%. Other options like berberine, curcumin, certain probiotics, and soluble fiber show more modest effects. Here’s what the evidence actually supports, including the doses that matter and what kind of results to expect.
Omega-3 Fatty Acids: The Strongest Option
Omega-3s from fish oil are the most studied triglyceride-lowering supplement by a wide margin. At doses of 3 to 4 grams per day of combined EPA and DHA, they reduce triglycerides by about 30% on average, with a range of 16% to 45% depending on how high your levels are to begin with. The effect is dose-dependent, and the minimum effective dose is above 2 grams per day. At typical Western dietary intake (around 130 milligrams per day), there is no measurable triglyceride benefit.
This is an important distinction: the one-capsule-a-day fish oil supplements most people take provide around 300 to 500 milligrams of EPA and DHA combined. That’s nowhere near the therapeutic threshold. To get real triglyceride reduction, you’d need to take multiple capsules daily, ideally totaling at least 2 grams of EPA plus DHA (not total fish oil, but the active fatty acids listed on the label).
EPA and DHA appear to be equally effective at lowering triglycerides. They work primarily by reducing the liver’s production of triglyceride-rich particles and secondarily by helping the body clear those particles from the bloodstream faster. Results typically appear within about one month of consistent use at the right dose.
Prescription vs. Store-Bought Fish Oil
There is a real difference between prescription omega-3 products and the bottles on supplement store shelves. Prescription formulations are FDA-approved specifically to treat severe hypertriglyceridemia (levels at or above 500 mg/dL). They are highly purified, quality-controlled, and deliver a standardized dose of 3.4 grams of omega-3s per day.
Over-the-counter fish oil supplements have no approved clinical indications and are not held to the same manufacturing standards. Independent testing has found that many supplements contain variable amounts of EPA and DHA that don’t match their labels, along with higher levels of oxidation products compared to prescription versions. Some contain contaminants, cholesterol, or saturated fats. If you’re using fish oil to manage elevated triglycerides rather than for general wellness, the quality and concentration of what you’re taking matters significantly. Look for products that have been third-party tested, and check the supplement facts panel for the actual EPA and DHA content per serving.
Berberine
Berberine is a plant compound found in several herbs, including goldenseal and barberry. It acts on multiple pathways in the liver and gut that influence how your body produces, processes, and clears fats from the blood. In the liver, it affects enzymes involved in fat production and helps promote the breakdown of fatty acids for energy. It also appears to influence gut bacteria in ways that shift lipid metabolism.
What makes berberine unusual compared to single-target drugs is that it coordinates effects across several organs simultaneously. Most clinical studies use doses of 500 milligrams taken two to three times daily. Berberine also lowers blood sugar, so people already on diabetes medications should be cautious about combining the two, as the blood sugar-lowering effects can stack.
Curcumin
Curcumin, the active compound in turmeric, shows a modest but consistent effect on triglycerides. A large umbrella review pooling data from 87 trial arms found that curcumin supplementation reduced triglycerides by an average of about 13 mg/dL. That’s a small absolute change, but it was statistically significant across a wide body of evidence. Curcumin also raised HDL (“good”) cholesterol by about 2.4 mg/dL.
The catch with curcumin is that your body absorbs very little of it in its standard form. Bioavailability-enhanced formulations, which include versions combined with piperine (black pepper extract), nano-curcumin, liposomal or phytosomal forms, and micelle-based products, performed significantly better across all lipid outcomes. If you’re considering curcumin for triglycerides, a standard turmeric capsule is unlikely to do much. Look for one of these enhanced formulations, and plan to take it for at least 8 weeks before expecting measurable changes. Dosages in clinical studies ranged from 80 milligrams per day for nano-curcumin up to several grams for standard extracts.
Specific Probiotic Strains
Not all probiotics affect triglycerides, but a few specific strains have shown promise. In a 12-week clinical trial, a combination of Lactobacillus curvatus HY7601 and Lactobacillus plantarum KY1032 reduced serum triglycerides by 20% in people with borderline to moderate hypertriglyceridemia. The daily dose was 2 grams of powder containing 10 billion colony-forming units total. The probiotic group also saw a 25% increase in apolipoprotein A-V, a protein that helps the body process triglyceride-rich particles.
This is a narrower evidence base than omega-3s. The results come from specific strains at specific doses, and general-purpose probiotic blends may not contain these organisms. If you’re interested in this approach, check the label for the exact strain designations, not just the species name.
Soluble Fiber
Soluble fiber, including psyllium husk, has a well-known effect on cholesterol, but its impact on triglycerides is smaller. A dose-response meta-analysis found that soluble fiber supplementation reduced triglycerides by about 5.5 mg/dL on average. The greatest decrease came at 15 grams per day, which lowered triglycerides by roughly 6.8 mg/dL. Each additional 5-gram increment provided a modest further reduction, though the trend just missed statistical significance.
Soluble fiber is unlikely to be a standalone solution for high triglycerides, but it contributes to an overall lipid-friendly diet. Psyllium husk powder is one of the easiest ways to increase your intake, and it has additional benefits for cholesterol and blood sugar control.
Niacin (Vitamin B3)
Niacin at high doses has long been used to lower triglycerides, particularly in people with levels high enough to risk pancreatic inflammation. It is available both as a prescription and as an over-the-counter supplement. The most notable side effect is flushing: a warm, red, itchy sensation across the face, neck, and chest that can be intense at first but generally fades after several weeks of continued use. Taking an anti-inflammatory like ibuprofen about 30 minutes before your dose can reduce flushing, as can avoiding alcohol, hot drinks, and spicy food around the time you take it.
Doctors typically start niacin at a low dose and increase gradually. While it does lower triglycerides effectively, niacin has fallen out of favor in recent years because large trials failed to show that adding it to statin therapy reduced heart attacks or strokes. It remains an option for people with very high triglycerides, but it’s no longer a first-line recommendation for most people.
How Long Before You See Results
Triglycerides are the most responsive part of a standard lipid panel. With dietary changes and exercise, some improvement can show up within days to weeks. For supplements specifically, omega-3s at therapeutic doses typically produce measurable changes within about a month. Curcumin studies generally required at least 8 weeks. The probiotic trial showing a 20% reduction ran for 12 weeks.
More substantial, stable changes in your lipid profile generally take 6 to 12 weeks, and lasting results require at least 6 months of consistent use. A single blood draw after two weeks of supplementation is too early to judge whether something is working. Plan to retest after two to three months of steady, daily use at the right dose.
Interactions to Watch For
High-dose omega-3s can enhance the blood-thinning effects of anticoagulant medications, so if you’re on a blood thinner, your doctor may need to monitor your clotting more closely. Berberine can lower blood sugar and may interact with diabetes medications. Niacin at prescription-level doses can affect liver function and may interact with certain cholesterol-lowering drugs. Soluble fiber can impair the absorption of other medications if taken at the same time; spacing them at least an hour apart avoids this issue.
If you’re already taking a statin or fibrate for cholesterol, adding high-dose supplements without guidance can create overlapping effects that increase side effect risk. This is especially true for combinations that affect the same liver enzymes responsible for drug metabolism.