Women’s gut health,
explained by the research
What the science says about fiber, the gut and hormones, and the daily gummy built around it.
Women were left out of early drug research for years.
A short piece of history worth knowing before you read the science.
16 years passed between 1977 and 1993.
An FDA guideline keeps women of childbearing potential out of Phase 1 and early Phase 2 drug trials.
Congress passes the NIH Revitalization Act, which requires women to be included in NIH-funded clinical research.
Sources:AAMC, Why we know so little about women’s health (Mar 2024)/NIH Office of Research on Women’s Health, History of women’s participation in clinical research
Sarah M.
Verified Customer
Grandma's fiber could NEVER.
I was so over old-school chalky powders and fake celebrity gummies that do zero. Two weeks in, that afternoon drag is dead, my post-lunch bloat vanished, and I'm hot in the body I'm ALREADY in. Get it!
Full Fiber Gummies
The Female-First Formula for “Not Feeling Like Yourself”
The afternoon crash. The post-meal balloon. The mood swings and clothes that suddenly feel tight by dinner. Generic fiber wasn't built for female physiology. Closing your daily fiber gap feeds your gut bacteria, steadies your afternoon energy, and helps you feel comfortable, confident, and light in your own body again.
- Support healthy weight management & feel less weighed down after meals
- Keep your energy & mood steady straight through the afternoon slump
- Relieve everyday bloating & support digestive regularity
- Feed the gut bacteria that manage healthy estrogen & hormonal balance
- A 30-second daily self-care habit that belongs to you alone
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Give it 30 days. Your satisfaction is guaranteed. If you don't feel lighter, steadier, and more like yourself, unopened pouches can be returned within 60 days.
Your whole body is a system.
How It Connects
Fermentable fiber is not digested in the small intestine. It travels to the colon, where resident bacteria ferment it. A fiber that gut microbes use this way, with a benefit to you, is called a prebiotic. This is where the chain of connections starts.
What the Research Shows
A prebiotic fiber, agave inulin, enriched Bifidobacterium in a randomized trial in healthy adults. Effects differ by fiber and by person. About 7 in 100 US adults reach the adequate intake of fiber.
How It Connects
When bacteria ferment fiber, they make short-chain fatty acids: mainly acetate, propionate and butyrate. Cells lining the colon use butyrate as a main source of energy, and these acids also act as signals that can reach other tissues.
What the Research Shows
Short-chain fatty acids serve as energy substrates and as signals through cell receptors. Much of what is known about their effects beyond the gut comes from animal and lab work. Tolerable amounts of fermentable fibers differ from fiber to fiber.
How It Connects
A resistant fiber is only partly digested, so less of it is absorbed as glucose. Taken with a meal, that can soften the rise in blood sugar and insulin that follows. Tapioca resistant maltodextrin, the main fiber in Full Fiber, has been studied for this.
What the Research Shows
A meta-analysis of 37 trials found resistant maltodextrin lowered the blood-sugar response to carbohydrate foods, about 20% with 6 g in a drink. Two crossover trials in healthy adults tested tapioca resistant maltodextrin and found lower insulin responses. Full Fiber itself has not been tested.
How It Connects
The liver packages estrogens and sends them to the gut to leave the body. Some gut bacteria make an enzyme, beta-glucuronidase, that can unpackage them so part is reabsorbed. The bacterial genes involved are called the estrobolome. Diet is one factor that shapes which bacteria thrive.
What the Research Shows
A review describes this loop, and diet is linked to gut microbiota composition and function. In postmenopausal women, a more diverse gut microbiome was associated with a higher ratio of estrogen metabolites in urine. This area is early, and trials have not established that changing fiber intake changes hormone levels.
How It Connects
The connection runs both ways. Sex hormones can influence how the gut moves, and gut bacteria take part in how estrogens are handled. That is why the loop runs back to where it started.
What the Research Shows
In 83 healthy adults, colon transit was slower in women: a median 1.5 days against 1.3 days in men. In a survey of 156 healthy women, 73% reported at least one digestive symptom before or during their period. Reviews describe sex hormones influencing gut motility, mostly from animal studies.
What's inside:
5,450 mg of fermentable soluble fiber. It reaches the colon, where gut bacteria ferment it into short-chain fatty acids, the process described above.*
100 mg of ginger, included for digestive support alongside the fibers.*
80 mg of magnesium, an essential mineral, included alongside the fiber blend.*
Science at every step.
Our doctor advisory panel helps guide how Full Fiber is developed, from women’s needs to the ingredients we choose.
Active collaboration
Our advisors review materials and advise on where women’s gut health is heading, from everyday needs to emerging research.
Expert guidance
Our advisors share what they and their peers see working in the field, advising on the fibers, supporting ingredients, and science behind Full Fiber.
Formulation review
They review Full Fiber’s ingredients and supporting research, helping us make informed choices about the formula you take every day.
Questions you're asking
Three fiber sources, printed in full: 4,500 mg soluble resistant tapioca fiber, 950 mg prebiotic soluble fiber and 200 mg cellulose, for 6 g of dietary fiber per serving.
Plus 80 mg magnesium, 100 mg ginger and 100 mg Irish moss. No proprietary blend, so you can check every amount against the panel.
Three gummies a day, with food or without. Adults 18 and over. Sixty gummies in a pouch.
No. Full Fiber itself has not been clinically tested. The research on this page is about fiber and gut bacteria in general, and about one of its ingredients, tapioca resistant maltodextrin.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Three grams per serving, all of it added sugar. We chose real sugar over sugar alcohols, which many people find hard on the stomach. Every amount is on the panel.
Yes. No gelatin. The gel comes from carrageenan, which is extracted from Irish moss, the same seaweed listed on the panel.
No. Every amount is printed. If you want to know how much of something is in here, you can just read it.
Generally yes. If you take prescription medication, check with your doctor first, since fiber can affect how some medications are absorbed.
Ask your doctor before starting any supplement while pregnant or nursing.
Some people notice extra gas when they add fermentable fiber. Taking the gummies with food, or starting with fewer and building up, is a common way to ease in.
Developed with doctors, happy gut guaranteed.
We're confident you'll feel the difference. If it is not for you, our 30-day satisfaction guarantee is there to make trying it feel safe.