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Fitness Fiber Reviews

By: Optimum

  November 22, 2018

  • Curbs Hunger
  • Make You Feel Fuller
  • Could Have A Few More Servings Per Container
  • No Scooper
  • Mixability

Quick Summary

Good addition to weight loss supplements.


After reading dozens of articles about essential nutrients for fat burning, fiber-rich foods became irreplaceable part of my diet. Even if you eat lots of broccoli, apples, cereals and sweet potatoes, such supplements will always have bigger impact on your body. Fiber has number of health benefits, such as keeping your blood glucose levels from rising too fast, increasing satiety, boosting bowel movement, helping body to absorb other nutrients and lowering cholesterol levels. There are two types fiber: Soluble (soluble in water) and insoluble (does not absorb or dissolve in water), both are important for health, digestion, and preventing diseases.

Ingredient Profile

Digestion-resistant Maltodextrin
Guar gum
Psyllium seed husk
Gum arabic

Proportions not specified...
Polydextrose is a synthetic polymer of glucose, frequently used to increase the dietary fiber content of food, to replace sugar, reduce calories and fat content. Digestion-resistant maltodextrin is also most commonly derived from corn and wheat (as well as rice and potatoes),created by putting maltodextrin through an additional process that changes the bonds which connect the sugar units. It is indigestible because our bodies do not have the enzymes necessary to break down the new bonds. Inulin is a type of soluble fiber found in many plants, your gut bacteria convert inulin and other prebiotics into short-chain fatty acids, which nourish colon cells and provide various other health benefits. Guar gum is a fiber from the seed of the guar plant. Guar gum is used as a laxative for treating constipation, inn foods and beverages, guar gum is used as a thickening, stabilizing, suspending, and binding agent. Psyllium is a soluble fiber derived from the seeds of Plantago ovata, an herb mainly grown in India. It increases the bulk in your stool, an effect that helps to cause movement of the intestines. It also works by increasing the amount of water in the stool, making the stool softer and easier to pass. Psyllium, one type of bulk-forming laxative, has also been used along with a proper diet to treat high cholesterol. Gum arabic, also known as acacia gum contains water-soluble dietary fibers (WSDF) that are not only good fiber for your diet but also helpful in keeping your cholesterol under control. One study showed that taking 15 grams of acacia gum in liquid form every day helped manage the concentration of plasma cholesterols in blood.


The only disadvantage of this powder is it's mixability. Doesn't matter you try to mix it in water, juice or soda drinks, you have to drink fast until sediments move in water... Otherwise you'll have to stir again. Neither teaspoon Nor hand mixer can deal with that. Eating with foods like oatmeal, soups and yogurt are easier options.
Recommended dosage at the beginning to adopt is one teaspoon per day, any time of the day and for my body it's completely enough. Doesn't have any taste and it's easy to swallow even in ordinary water.


One thing I can obviously say, this powder killed my appetite after the very first use! I received this package at night, rushed to post office and mixed with juice as soon as I got home. From next morning I feel I have no appetite and no craves! I eat foods that are healthiest and doesn't even think of chocolate or any sweet beverage! Strange thing for man who has to work mentally and study all day long, studies confirm chocolate and nuts are essential for such lifestyle... I've already finished nearly half of the jar and I'm preparing to purchase second one very soon.
Also I can guarantee it won't have any side effects for your bowel and digestive system, as I'm currently under medication and restricted to consume many products, but ON Fitness Fiber never causes gas or bloating, which are very common with fiber rich foods.


I purchased 6.87 Ounce jar for $7.93 ($1.15 / Ounce) on Amazon. Most of online shops claim that jar contains 30 servings, but it's not necessarily true, because it comes without scoop and you have to use your own teaspoon, thus one serving varies and can serve some more or less amounts. Currently cheapest online shop to purchase it is for $6.95 ($1.02/ Ounce), other options vary from $7.5 to $11.

Side Effects

None of them.


This fiber powder makes me dubious about quality and truthfulness of ON products, because of it's "Mixes Easily" label on sticker... Anyway I recommend it for increasing satiety and suppressing appetite, but it definitely doesn't follow that label and can't guarantee increasing overall health of digestive system. I personally haven't suffered any stomach problem, which are commonly followed by high fiber foods, but some reviewers on many online shops claim to do so. There are many powdered fiber bestsellers available with added nutrients and their description seems more attractive. ON Fitness Fiber is great aid while dieting, which can suppress your appetite quickly and contribute good amounts of fiber per serving.

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