In Stock
Doctor's Best

Prebiotic Powder, Sunfiber®, Unflavored, 7.4 oz (210 g)

4.8 · 452 reviews
2,335 ₽

Science-Based Nutrition™ Supports Healthy Digestion & Regularity Sunfiber ® Dietary Supplement Non-GMO Gluten Free Soy Free Vegan Non-Gritty Easy Dissolve At Doctor's Best, we believe in keeping life's surprises where they belong - away from the gut. Our Sunfiber® formula is a natural fermented prebiotic dietary fiber that supports smooth digestion, glycemic balance, satiety, and overall cardiovascular health. By promoting the growth of beneficial gut bacteria, it also facilitates nutrient absorption and helps maintain a healthy gut environment. Promotes regularity and occasional relief from constipation Supports glycemic balance & a sense of fullness Contributes to overall cardiovascular health

International delivery

Shipping calculated at checkout

Returns & exchanges

Within 30 days of delivery

Science-Based Nutrition™ Supports Healthy Digestion & Regularity Sunfiber ® Dietary Supplement Non-GMO Gluten Free Soy Free Vegan Non-Gritty Easy Dissolve At Doctor's Best, we believe in keeping life's surprises where they belong - away from the gut. Our Sunfiber® formula is a natural fermented prebiotic dietary fiber that supports smooth digestion, glycemic balance, satiety, and overall cardiovascular health. By promoting the growth of beneficial gut bacteria, it also facilitates nutrient absorption and helps maintain a healthy gut environment. Promotes regularity and occasional relief from constipation Supports glycemic balance & a sense of fullness Contributes to overall cardiovascular health

Customer reviews

5.0
verified purchase
The Secret to Staying Regular

Let's be honest, staying regular isn't always easy, especially on days when I'm not eating enough vegetables. This prebiotic powder has been a game-changer for me. The quality is fantastic; the only ingredient is Sunfiber® Guar Fiber, which is pure and gentle. The taste is very mild and subtle, so it mixes easily into water or a smoothie without changing the flavor, which is a huge plus. The convenient 1-scoop dosage is all I need. The main benefit is that it helps me go to the bathroom gently and predictably. I also love that it helps support a healthy gut microbiota. The size of the container provides a good month's supply. It’s an excellent choice for gentle and reliable digestive support.

8/18/2025
5.0
verified purchase
Probiotic

I drive from the first time I have Hashimoto it’s very good for me after lunch ingredients very good quality not bad. It’s a powder. Nice taste. there is a Fibar my tummy is good. package with the price not bad.

1/4/2026
5.0
verified purchase
Balance your gut, without unusual tastes, dissolves well, quality ingredients

It's definitely a product that works. Whether you have loose or hard stools, this type of probiotic fiber seems to balance your bowel movements, regulate the number of times you go to the bathroom, and normalize the consistency. I don't experience any unusual tastes when taking it; it dissolves well and doesn't cause stomach upset. I've had a few products from this brand before, and that's why I completely trusted it, even though the product information doesn't have many reviews. It's obvious they use quality ingredients.

4/8/2025
5.0
verified purchase
Highly recommend!

I ordered this to help increase my fiber intake and to support a healthy gut for my weight loss journey. So far I’ve been very happy with the additional fiber content and the quality. I do find I struggle with the taste, but it’s not terrible.

9/18/2026
5.0
verified purchase
good for constipation

A very convenient prebiotic powder because it is unflavored and can easily be mixed into water or other drinks. I like that it doesn't noticeably change the taste, making it easy to use consistently. The powder also dissolves nicely when mixed properly.

8/10/2026
5.0
verified purchase
Great fiber powder and value

I had to work my way up to a full serving, but other than that, this is a great powder supplement and easy to work into my every day routine. Add it to water for a tasteless, easy addition of fiber!

6/15/2026
5.0
verified purchase
Great powder

This is a great powder with no added extras. Simply add a scoop to a glass of water.

3/16/2026
5.0
verified purchase

The product is wonderful and of high quality. It is very beneficial for me, and I have become used to using it regularly. It is excellent. iHerb’s delivery is also excellent, their quality is outstanding, and they are very reliable and very fast.

2/19/2026
5.0
verified purchase
Great

Very happy with this product. The quality is good, the price is fair, and I’m pleased with the results so far. It works well for me.

1/29/2026
3.0
verified purchase
They are very soluble in water.

Finished up so fast! I don't feel any difference with other PHGG brands.

1/29/2026