SPONSORED ADVERTISING CONTENT
Top 5 Fiber Supplements of 2025
Which fiber supplements help regulate digestive health and boost energy? Plus, top ingredients to look for + avoid.
Advertiser Disclosure
As you may already be aware, fiber is a big part of maintaining optimal health. Yet, FDA data shows that a whopping 92% of adult Americans don't meet the daily recommended amount of fiber intake.1
Not getting fiber can result in a variety of health issues like constipation, bloating, low energy, poor heart health, and difficult weight management.2
However, before buying any fiber supplement, it's important to know the different types of fiber, and their unique health benefits. You'll also want to make sure you're getting the right kind.
With so many supplements on the market, it can be hard to know which ones work, and which ones don't. That's why Smarter Reviews did all the research for you – analyzing hundreds of the top supplements on the market and narrowing them down to the top 5.
Why is Fiber So Important?
Fiber not only supports proper digestion, nutrient absorption, and healthy bowel movements, it also helps:
♦ Promote a healthy weight
♦ Support normal energy and stamina
♦ Maintain healthy cholesterol levels
♦ Support healthy blood sugar levels
When looking for a fiber supplement, many people look for any supplement that contains fiber. What they might not to know is that there are different types of fiber, each serving a different purpose.
The main types of fiber are soluble and insoluble fiber. Soluble fiber helps support healthy weight management by making you feel full longer. They're also shown to help maintain healthy blood sugar and cholesterol.
Insoluble fiber helps food pass more quickly through the stomach and intestines. This can guard against constipation and alleviate other digestive issues.
To reap the full benefits of fiber, you'll need a blend of both types.
Other Ingredients To Look For
Fiber + Probiotics = Gut Health Powerhouse
Recent findings have revealed the true key to digestive comfort: healthy gut bacteria. We’ve also learned fiber nourishes and fuels these vital organisms. That means combining fiber with probiotics can lead to incredible digestive support.
So, it’s important to find a formula with this powerful combo — especially if you want to enjoy smoother digestion, fewer cravings for “junk food,” and more youthful energy.
Beetroot: Circulation Superfood
On top of its high fiber content, beetroot also contains key nitric oxide producing ingredients. This critical molecule helps your blood vessels expand to support your blood flow and heart health.
The result can offer a massive benefit to your energy levels, mental sharpness, and even waistline. In order to experience these amazing effects, look for a fiber supplement with at least 3,000mg of beetroot.
Avoid Artificial Sweeteners & Flavors
Many brands add artificial flavors and sweeteners to enhance the taste of their powders. Make sure any added sweetener is naturally-sourced (such as stevia or erythritol), since synthetic sugar could cause unnecessary weight gain, and other undesirable side effects in some people.
When it comes to choosing an effective fiber supplement, quality ingredients are the most important thing — but they're not the only thing. Here are a few points to consider before making your purchase.
Check For The Following Before You Buy
Non-GMO
Non-GMO ingredients are grown without pesticides or other unnecessary toxins that can contaminate what you're consuming.
Doctor-Formulated
Fiber supplements can guarantee more effectiveness and safety when formulated by a specialized doctor who has years of experience in that specialty.
Money-Back Guarantee
It’s always a good idea to invest in a supplement that offers a 100% satisfaction money-back guarantee that shows the company's faith in its product. Look for brands that offer at least a 90-day money-back guarantee.
Top 5 Fiber Supplements of 2025
After analyzing the top-selling fiber supplements across multiple metrics, this list has been narrowed down to include only the best of the best. Check out the top 5 picks below.
1. CardioFitMD™
Owned by the Smarter Reviews Group of Companies
9.
.png)
A+
Overall Grade
PROS
- Contains 8g of Fiber
- 4000mg of beetroot
- Probiotics & Prebiotics
- Non-GMO
- Essential Vitamins
- 90-day money-back guarantee
CONS
- Only sold online
The Bottom Line
CardioFitMD™ is made from a blend of 2000mg of beetroot powder and 2000mg beetroot juice powder, serving as an excellent source of fiber and essential minerals needed to ensure optimal digestive and overall health.
CardioFitMD™ also contains probiotics and prebiotics to ensure that the fiber is doing its job, and to offer a safe environment for the growth of beneficial bacteria.
What's more, CardioFitMD™ is gluten-free, dairy and peanut free, non-GMO, keto and paleo-friendly, and 100% vegan.
As an added bonus, the taste and texture are superior to products in this space. Best of all, CardioFitMD offers an exceptional, 365-day money-back guarantee, which shows that they truly stand by their product.
*Results do not necessarily reflect typical results from the use of these products. Please visit product websites for more information.
Learn More2. Daily Digestive Prebiotic Fiber
Total Ranking
9.5/10
A
Overall Grade
PROS
- Contains soluble and insoluble fiber
- Non-GMO
- 60-day return policy
CONS
- No beetroot
The Bottom Line
Renew Life contains 100% adult prebiotic fiber, helping to relieve digestive issues such as occasional constipation and bloating.
This daily fiber supplement is USDA Organic, gluten free, dairy free and soy free, and Non-GMO Project Verified. It is also made in the USA using only the highest quality global ingredients.
Beyond that, they do have list a 60-day return policy on their website, so they stand behind their product and give you ample time to test it out.
For all these reasons this Prebiotic Fiber formula by Renew Life is number 2 on the list.
*Results do not necessarily reflect typical results from the use of these products. Please visit product websites for more information.
Learn More3. Prebiotic Fiber Boost
Total Ranking
8.7/10
B+
Overall Grade
PROS
- Soluble Fiber
- Keto & vegan-friendly
- 30-day return policy
CONS
- No beetroot
- No additional vitamins
The Bottom Line
GoBiotix's Prebiotic Fiber Boost formula contains soluble fiber in order to improve digestion. They use Nutraflora, a soluble prebiotic fiber which helps support overall digestive health.
While they do include proven ingredients that help enhance digestive health, their formula could be made stronger by including ingredients such as beetroot which further helps with lowering blood sugar, improving energy, and weight management.
They do offer a money-back guarantee, but it's only limited to 30 days.
For all these reasons, Prebiotic Fiber Boost is number 3 on the list.
*Results do not necessarily reflect typical results from the use of these products. Please visit product websites for more information.
Learn More4. BioBeet Juice
Total Ranking
8.7/10
B+
Overall Grade
PROS
- 3g Beetroot juice powder
- Silica to prevent clumping
- 2g carbohydrates
CONS
- 30-day return policy
- No Probiotics
- No Essential Vitamins
The Bottom Line
Coming in at number 4 on the list is BioBeet Juice. This product has a simple formulation as it's just 3g of organic beetroot juice powder and silica to prevent clumping.
This formula is still missing some key ingredients like probiotics, hence why it's fourth on the list.
However, most customers reported seeing glowing results since starting this supplement, so it had to be included on the list.
It should be noted that Tiquetra Health only has a 30-day return policy.
*Results do not necessarily reflect typical results from the use of these products. Please visit product websites for more information.
Learn More5. Organic Beet Root Powder
Total Ranking
7.9/10
C+
Overall Grade
PROS
- 3g organic beetroot powder
- 90-day return policy
- 90 Servings
CONS
- No Additional Vitamins
- No Probiotics
The Bottom Line
Rounding off the list is KOS Organic Beet Root Powder. It's simply organic beetroot powder, which is a great way to boost energy, improve digestion, and manage weight.
Like others on the list, it's also certified organic, non-GMO, gluten, and keto-friendly.
This one-ingredient product is an all-around solid choice. However, it also lacks probiotics which may be a turn-off for people looking for something more.
*Results do not necessarily reflect typical results from the use of these products. Please visit product websites for more information.
Learn MoreDisclaimer:
Smarter Reviews is owned and operated by the same company that owns certain products featured on this website, including the products ranked number one.
In addition, we receive compensation from certain companies whose products are featured on this website when you purchase a product using the links on this website.
Go back to pageWith Research From
Sources used for research purposes. Smarter-Reviews.com are not officially affiliated with these sites.
What You Will Learn:
Estimated Read Time 5 Minutes