Best Fiber Supplements of 2025

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Fiber plays an important role in maintaining your overall health and a healthy digestive system. Besides helping you digest food properly and keeping your gut health in check, it has health benefits such as lowering cholesterol, preventing constipation and even helping to lose weight. Fiber plays a role in regulating blood sugar levels. However, despite its importance, most people do not get enough fiber from their food.

increasing fiber-rich foods like lentils and chia seeds can help bring some soluble and insoluble fibers into your system, but you can also consider taking dietary supplements to increase your fiber intake and maintain your digestive tract in optimal condition. As such, the number of supplements on the market makes it possible to choose the right one to get enough fiber in excess.

Our CNET experts have years of experience researching vitamins and supplements. We use this knowledge to identify the top fiber supplements on the market. Check out our top picks for the best dietary fiber supplements to help increase your fiber intake.

What is the best fiber supplement?

There is a wide variety of fiber supplements, from food source – where it is found naturally – to sugar-free to organic options. If you’re looking for a budget fiber supplement, consider Benefiber Original. It is very cheap and dissolves easily in hot and cold liquids.

Before we dive deeper into our curated list of the six best fiber supplements, there’s one thing you should 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 food move through your digestive system. So it’s not just about eating more fiber but also about consuming the right kind of foods that are high in fiber. OK, now you are ready.

Best fiber supplements in 2025

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Vitafusion Fiber Well Fit Gummies are one of the best gummy fiber supplements you can get for kids or people who have trouble swallowing pills. These gummies are sugar free and have natural berry, peach and strawberry flavors. User reviews are raving about the taste and how easy these gummies are to chew. They also praise the effectiveness of this product.

With each serving, you’ll also get essential B vitamins, folic acid and biotin. Many fiber supplements do not have other vitamins or minerals included.

Bag of Spectrum Essentials Organic Chia Seeds

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If you’re looking for a dietary fiber supplement, consider Spectrum Essentials Organic Ground Chia Seeds. These ground chia seeds are a whole food form of fiber. It is less versatile than other fiber supplements, as it has a nutty taste and does not dissolve in beverages. That’s why you’ll always know that chia seeds are there, but if you like the taste, they can provide water, smoothies or food with extra fiber.

Chia seeds are full of fiber and offer a great way to aid digestion. As a bonus, chia seeds also contain omega-3 fatty acids, which have associated with reduced risk on heart attack or strokes.

Container of Metamucil 4-in-1 fiber supplement

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Metamucil sugar-free fiber powder is a natural psyllium husk powder four-in-one fiber supplement intended to aid 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 any unflavored, berry or orange powder. Note that the reviews suggest that the strong orange flavor can be polarizing — whether you like it or not. Some users say that Metamucil is smoother and easier to drink than other brands, allowing you to add it to water, juice or smoothies without issue.

Tub of Today's Sports Psyllium Husk Powder

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If you’re looking for a budget-friendly fiber supplement that includes both soluble and insoluble fiber, consider NOW Supplements’ psyllium husk powder. This is a great addition to your diet if you struggle with constipation. You can cook it into a meal or add it to your daily smoothie.

This fiber supplement has the highest concentration of fiber 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 amount of iron for the day.

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Garden of Life Organic Fiber Supplement contains no added sugar. It is 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 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 the products it produces follow social and environmental standards.

When choosing the best fiber supplements for this list, we considered price, type of fiber supplement and ingredients. In addition, since the supplement industry is not well regulated by the FDA, we rely on additional certifications that confirm the quality and purity of the products. We have not tested these fiber supplements at home.

There are many fiber supplements on the market, all varying in price, type and form. When you start your search, keep these important factors in mind:

Fiber type: There are two types of fiber: soluble and insoluble. Soluble fiber benefits your cholesterol and blood sugar. In comparison, insoluble fiber is what helps with constipation and regular digestion.
Dosage: According to the Mayo Clinic, Women should aim for 21 to 25 grams of fiber per day, while men should eat 30 to 38 grams. If you are not getting enough fiber, you may want to consider a supplement. You should start with a low fiber content and gradually increase it over time. This way, you can avoid side effects like bloating or excess gas.
What is 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.
shape: Fiber supplements come in a variety of forms, the most common being powder or gummy. Whole food sources of fiber are also available, such as chia seeds. Note that chia seeds do not dissolve as a powder, and they also have a flavor.

Fiber is an important carbohydrate that our bodies use to manage body sugars, hunger and digestion. Our bodies cannot break down fiber, so it passes through our digestive system undigested. it adds weight and softens the stoolto make it easier to pass.

Lots of fiber foods:

Beans
Edamame
Berries, pears, apples
Brussels sprouts and broccoli
Chia seeds
Carrots and beets
Quinoa
Oats

Despite fiber being found in many foods, many people do not get enough of it from their diet. That’s where fiber supplements come in.

What are the benefits of taking fiber supplements?

How often should you take fiber supplements?

Fiber supplements are generally considered safe for daily use. You should only take it if you are not getting enough fiber from your diet.

There are side effects of fiber supplements that should not be ignored. Your fiber supplement can cause constipation if you drink too much or if you don’t drink enough water. When you start your fiber supplements, it’s best to start slowly and at a lower dose, then work your way up.

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