Best Fiber Supplements of 2025

Extra certifications help you feel confident that the vitamin only contains what’s on the ingredient label.
The most popular forms of vitamins are capsules, tablets and gummies. Decide which one is best for you.
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Always take note of the dosage of each nutrient included in your vitamin selection.
Every multivitamin will have nutrients, but they may also contain ingredients you’d rather avoid.
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Getting plenty of fiber in your diet is important. Fiber can help you maintain a healthy digestive system. It can also lower your cholesterol levels, regulate your appetite and even stabilize your blood sugar levels.
But most people aren’t getting enough fiber. Adding fiber-rich foods like lentils and chia seeds can help bring some soluble and insoluble fiber into your system, but if you’re struggling to meet your daily needs through diet alone, it may be time to try a fiber supplement.
That can be easier said than done, with the large number of supplements on the market, but our CNET experts are here to help. They have years of experience researching vitamins and supplements, and they’ve used what they’ve learned to identify the top fiber supplements for you. Read on.
What is the best fiber supplement?
There is a lot of variety in fiber supplements, from food sourced — where its found naturally — to sugar-free to organic options. If you’re looking for a budget fiber supplement, consider Benefiber Original. It’s super affordable and easily dissolves in both hot and cold liquids.
Before we dive deeper into our curated list of the six best fiber supplements, there’s one thing you need to know. There are two types of fiber in supplements: soluble and insoluble fiber. Soluble fiber dissolves in water and helps lower blood sugar and cholesterol levels. Insoluble fiber is the type that helps move food through your digestive system. So it isn’t only about eating more fiber but also about consuming the right kind of high fiber foods. OK, now you’re ready.
Best fiber supplements of 2025
Hide our expert take Photo Gallery 1/1 $13 at Amazon $14 at Target $14 at Walmart Pros Affordable
Available in on-the-go packets
Flavorless and sugar-free Cons Lower dose of fiber
No third-party certifications Price $ Form Powder Serving size 3 grams of soluble fiber per 2 tsp Supply 62 days Best budget fiber supplement Benefiber Original Photo Gallery 1/1 $13 at Amazon $14 at Target $14 at Walmart Benefiber Original is wheat dextrin, a byproduct of milling wheat. It takes our spot as the best budget fiber supplement thanks to its low cost and versatility. That low price means it has less fiber per serving than other brands. Benefiber only has soluble fiber, which makes it a great option for people who want to use a fiber supplement to manage their blood sugar. Soluble fiber dissolves in water and is good for both diarrhea and constipation, while insoluble fiber helps with constipation. This fiber supplement is tasteless and dissolves easily in cold and hot liquids. You can also add it to food while you cook; it won’t thicken or add flavor. Hide our expert take
Show our expert take Photo Gallery 1/1 $13 at Walmart Pros Reviews say they’re easy to chew
Gluten and sugar-free Cons They contain gelatin, which is unsuitable for vegetarians or vegans Price $ Form Gummy Serving size 5 grams of soluble fiber per 2 gummies Supply 45 days Best gummy fiber supplement Vitafusion Fiber Well Fit Gummies Photo Gallery 1/1 $13 at Walmart Vitafusion Fiber Well Fit Gummies is one of the best gummy fiber supplements you can get for children or people who have trouble swallowing pills. These gummies are sugar-free and come in natural berry, peach and strawberry flavors. User reviews rave about the taste and how easy these gummies are to chew. They also praise the effectiveness of this product. With each serving, you also get essential B vitamins, folic acid and biotin. Many fiber supplements don’t have other vitamins or minerals included. Show our expert take
Show our expert take Photo Gallery 1/1 $12 at Amazon Pros Rich in fiber
A good source of omega-3 fatty acids
Nutty taste that you can add to smoothies, bread and food
Certified USDA Organic and gluten-free Cons Chia seeds don’t dissolve in water Price $ Form Ground Chia seed Serving size 4 grams of dietary fiber per 2 tbsp Supply 24 days Best food fiber supplement Spectrum Essentials Organic Ground Chia Seeds Photo Gallery 1/1 $12 at Amazon If you’re looking for a food-source fiber supplement, consider Spectrum Essentials Organic Ground Chia Seeds. These ground chia seeds are a whole food form of fiber. They’re a little less versatile than other fiber supplements, as they have a nutty taste and don’t dissolve into drinks. So you’ll always know the chia seeds are there, but if you like the taste, they can give water, smoothies or food a boost of fiber. Chia seeds are full of fiber and offer a great way to aid digestion. As a bonus, chia seeds also have omega-3 fatty acids, which have been linked to decreasing the risk of heart attacks or strokes. Show our expert take
Show our expert take Photo Gallery 1/1 $17 at Target $33 at Amazon Pros Plant-based
Gluten-free
You can choose between unflavored, orange and berry Cons Not for people with a psyllium allergy or sensitivity
Unflavored version is harder to find in store Price $$ Form Powder Serving size 6 grams of soluble fiber per one teaspoon, three times a day Supply 60 days Best sugar-free fiber supplement Metamucil Sugar-Free Powder Photo Gallery 1/1 $17 at Target $33 at Amazon Metamucil sugar-free fiber powder is a natural psyllium husk powder four-in-one fiber supplement that’s meant to help digestive health, control appetite and lower cholesterol and sugar levels. A review of research supports the claims that psyllium husk has cardiovascular, cholesterol and blood sugar benefits. You can choose from either unflavored, berry or orange powders. Note that reviews suggest that the strong orange flavor can be polarizing — you either like it or you don’t. Other users say that Metamucil is smooth and easier to drink than other brands, allowing you to add it to water, juice or smoothies without issue. Show our expert take
Show our expert take Photo Gallery 1/1 $20 at Amazon $22 at Walmart Pros Certified vegan, non-GMO and gluten-free product
Dairy- and nut-free
Budget-friendly and offered in several sizes Cons High concentration of fiber isn’t good for everyone Price $ Form Powder Serving size 7 grams of dietary fiber, 6 grams of soluble fiber and 1 gram of insoluble fiber per 2 tbsp Supply About 68 days Best fiber supplement for constipation NOW Supplements Psyllium Husk Powder Photo Gallery 1/1 $20 at Amazon $22 at Walmart If you’re looking for a budget-friendly fiber supplement that includes both soluble and insoluble fiber, consider NOW Supplements’ psyllium husk powder. It’s a good addition to your diet if you struggle with constipation. You can bake it into food or add it to your daily smoothie. This fiber supplement has the highest fiber concentration on the list, with seven grams of dietary fiber, one gram of insoluble fiber and six grams of soluble fiber. You also get 8% of the recommended daily value of iron for the day. Show our expert take
Show our expert take Photo Gallery 1/1 $18 at Garden of Life Pros Sugar-free
Comes in unflavored or citrus flavor
Has both insoluble and soluble fiber Cons No third-party certifications Price $ Form Powder Serving size 5 grams of insoluble fiber and 4 grams of soluble fiber per one scoop Supply 10 days Best organic fiber supplement Garden of Life Organic Fiber Supplement Photo Gallery 1/1 $18 at Garden of Life Garden of Life Organic Fiber Supplement contains no added sugars. It’s made from five natural ingredients, including acacia fiber, organic orange peel, organic baobab fruit, apple peel and cranberry seed. Each serving delivers 5 grams of prebiotic fiber. You can choose from unflavored powder or citrus. If you want to mix in the powder with drinks or food, we recommend the unflavored version. This fiber supplement includes both soluble and insoluble fiber, making it one of the best fiber supplements for constipation. Garden of Life is a certified B corporation. This means that all of its products produced comply with social and environmental standards. Show our expert take
How we chose the best fiber supplements When choosing the best fiber supplements for this list, we considered the price, type of fiber supplement and ingredients. Additionally, as the supplement industry isn’t well regulated by the FDA, we relied on additional certifications that vouch for the quality and purity of products. We did not test these fiber supplements in-house. Show more
Things to consider when buying fiber supplements There are a lot of fiber supplements on the market, all varying by price, type and form. When you start your search, keep these key factors in mind: Type of fiber: There are two types of fiber: soluble and insoluble. Soluble fiber benefits your cholesterol and blood sugar. In comparison, insoluble fiber is what will help with constipation and regular digestion.
There are two types of fiber: soluble and insoluble. Soluble fiber benefits your cholesterol and blood sugar. In comparison, insoluble fiber is what will help with constipation and regular digestion. Dosage: According to Mayo Clinic, women should aim for 21 to 25 grams of fiber daily, while men should eat 30 to 38 grams. If you’re not getting enough fiber, you may consider a supplement. You should start with lower fiber content and slowly increase it over time. This way, you avoid side effects like bloating or excess gas.
According to Mayo Clinic, women should aim for 21 to 25 grams of fiber daily, while men should eat 30 to 38 grams. If you’re not getting enough fiber, you may consider a supplement. You should start with lower fiber content and slowly increase it over time. This way, you avoid side effects like bloating or excess gas. What’s in the supplement : Some fiber supplements may include additional sweeteners or gluten, while others may include other vitamins and minerals. Always keep your dietary preferences and limitations in mind.
: Some fiber supplements may include additional sweeteners or gluten, while others may include other vitamins and minerals. Always keep your dietary preferences and limitations in mind. Form: Fiber supplements come in several forms, the most common being powder or gummy. Whole food fiber sources are also available, like chia seeds. Note that chia seeds won’t dissolve like a powder, and they also have a taste. Show more