Standard Process Gastro-Fiber Prebiotic Supplement 150 Capsules
- 150 capsules per bottle
- Take 3 capsules, 3 times a day, on an empty stomach
- Psyllium, apple pectin, fenugreek, fennel and carrot fiber (RG-I)
- 4.64 oz bottle, 2.56 by 2.56 by 4.68 inches
Last refreshed Sep 11, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A whole-food prebiotic fiber capsule for people who want a structured daily gut routine. The directions call for several capsules a day, so one bottle goes quickly.
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ASIN: B0FP3SG368Category: Fiber Supplements
Overview
Psyllium, apple pectin, fenugreek, fennel seed and a carrot fiber called RG-I make up the blend inside these white capsules. The fibers are meant to feed beneficial gut microbes, and the maker positions it as whole food nutrition.
The reason to buy is a mixed soluble and dietary fiber formula with a studied carrot prebiotic, from a long-established maker. The limitation is the dosing, because the stated directions use a large number of capsules per day, and the specs contain odd entries such as a hair growth benefit.
Who it's for
Adults who want a prebiotic fiber for gut and immune support, and who are willing to follow a multiple-capsule schedule, fit this product. Anyone with digestive disease, anyone on medication and anyone sensitive to fiber should consult a clinician first.
Pros and cons
- Mixed soluble and dietary fiber
- Carrot fiber prebiotic included
- Unflavored white capsules
- Clear dosing directions
- Many capsules per day
- Fiber grams per serving not listed
- Spec fields contain odd entries
Performance notes
Soluble fiber such as psyllium and pectin absorbs water and feeds gut bacteria, while the carrot fiber is listed as a prebiotic that encourages beneficial species. Taking fiber with water matters because dry fiber can cause discomfort. The directions call for an empty stomach, so timing around meals is part of the routine.
Specifications
| Brand | Standard Process Inc. |
|---|---|
| Dimensions & fit | |
| Item weight | 4.64 ounces |
| Item dimensions | 2.56 x 2.56 x 4.68 inches |
| Construction & materials | |
| Color | White |
| Included components | |
| Unit Count | 150 count |
| Other details | |
| Special Ingredients | Psyllium, apple pectin, fenugreek, fennel seed, carrot fiber (RG-I) |
| Item Form | Capsule |
| Flavor | Unflavored |
| Serving | 3 capsules, 3 times per day, empty stomach |
| Primary Supplement Type | Cellulose, water, and calcium stearate. |
| Product Benefits | Hair Growth |
Frequently asked questions
How big is the Standard Process Gastro-Fiber bottle?
The bottle weighs 4.64 ounces and measures 2.56 by 2.56 by 4.68 inches, with 150 capsules inside.
How many Gastro-Fiber capsules do I take?
The description says to take three capsules, three times a day, on an empty stomach, or as directed.
Is Gastro-Fiber a hair growth supplement?
No. The spec field lists hair growth, but the description describes a prebiotic fiber for gut and immune health.