1MD Nutrition FiberFitMD
FiberFitMD combines Inavea organic prebiotic acacia with psyllium seed husk, giving both soluble and insoluble fibre in an unflavoured vegan powder at $28. It publishes something most fibre products avoid: a two-scoop dose provides 25% of the recommended daily fibre intake. Telling you a serving covers a quarter of the target is a useful, honest number.
Last reviewed · researched from the manufacturer’s published pages by Tom
What’s in it
Amounts are shown only where the manufacturer publishes them. Anything without a figure is undisclosed — and for an active ingredient, an undisclosed dose is the central problem with this category.
- Inavea organic prebiotic acaciaamount not published
Branded acacia fibre; amount not published in the description we captured
- Psyllium seed huskamount not published
Soluble fibre with the strongest evidence of the two; amount not published
How the manufacturer says it works
1MD describes FiberFitMD as gastroenterologist-formulated, combining acacia and psyllium for a broad-spectrum blend of soluble and insoluble fibre to support bowel motility and regularity, help with occasional constipation, support satiety, and help maintain blood sugar already within a normal range. It states each two-scoop dose provides 25% of the recommended daily fibre intake.
What the evidence actually supports
Pairing acacia with psyllium is a sensible combination — psyllium carries the strongest evidence for satiety and cholesterol, while acacia is a well-tolerated prebiotic fibre that ferments gently and is less prone to causing gas than some alternatives. Publishing the dose as a percentage of the recommended daily intake is the useful framing: it tells you what a serving actually contributes rather than leaving you to guess. Unflavoured powder avoids the sweetener question, and it is vegan. Constipation is one of the most common GLP-1 side effects, which makes this genuinely relevant.
Where that evidence stops
Neither ingredient carries a published amount, so 25% of the daily target is the only quantity you get — useful, but it does not tell you how the split falls between acacia and psyllium, which behave differently. 25% also means three-quarters of your fibre still has to come from food. Psyllium expands in water and must be taken with adequate liquid. 'Gastroenterologist-formulated' describes who designed it, not evidence that the finished product was tested. Supporting blood sugar 'already within a normal range' is structure-function language, not a claim about treating anything.
Strengths and problems
Strengths
- Publishes the dose as 25% of recommended daily fibre intake — a genuinely useful framing most competitors avoid
- Combines psyllium (best-evidenced) with acacia (well tolerated, ferments gently)
- Unflavoured, so no sweetener question
- Directly relevant to constipation, one of the most common GLP-1 side effects
- Vegan, and 1MD carries a 90-day money-back guarantee across its range
- $28 is mid-range for a two-fibre formula
Problems
- Neither ingredient carries a published amount, so the acacia/psyllium split is unknown
- 25% of the target means three-quarters still has to come from food
- Psyllium expands in water and must be taken with adequate liquid
- 'Gastroenterologist-formulated' describes the designer, not testing of the finished product
- No third-party testing statement, and warnings are not published
What the manufacturer publishes
Publishes 8 of 8 standard terms.
- Intended use
- Sold as a dietary supplement, not as a treatment for any condition.
- Directions
- Two scoops mixed into a beverage. As with any psyllium-containing product, take with adequate liquid.
- Warnings
- Not published in the description we captured.
- Allergens
- States vegan and unflavoured.
- Third-party testing
- Not stated in the description we captured.
- Pricing
- $28.00 at capture.
- Subscription
- Not stated in the description we captured.
- Refunds
- 1MD publishes a 90-day money-back guarantee across its range.
- Shipping
- Not stated in the description we captured.
May suit
Someone on a GLP-1 dealing with constipation who wants a gentler two-fibre powder and understands it is a top-up, not the whole target.
Do not use if
- You have a history of swallowing difficulty or bowel obstruction
- You will not take it with adequate liquid
- You expect a fibre supplement to replace dietary fibre — this covers a quarter
Frequently asked
Is 25% of daily fibre enough?
It is a useful contribution and not the answer on its own — three-quarters still comes from food. Publishing the figure as a percentage is the honest way to present it, and more informative than a gram count you would have to look up.
Sources
Captured . Manufacturer pages change — check the current version before relying on anything.