Introduction
If you're comparing Metamucil's fiber gummies, you're doing the smart thing. Fiber you'll actually take beats fiber you won't. And theirs is cheap, easy to find, and says "no sugar added" right on the front.
So far so good. But turn it over.
A gummy that's sweet with no added sugar got there somehow. Metamucil's way is xylitol… a sugar alcohol. And sugar alcohols are the ones that sit in your gut and leave you gassy and bloated.
Which is a funny thing for a fiber gummy to do. You took it to feel better, not worse.
So the real question isn't who's got the lower sugar number. It's which gummy your gut actually feels good about, every day.
Two ways to build a fiber gummy. Metamucil chases the no-sugar-added label. Seya chases the one that sits easy. Neither's wrong. Here's how they compare, top to bottom. Both labels, nothing hidden.
Quick Orientation: Main Claims & Who It's For
| Seya Full Fiber Gummies | Metamucil Fiber Gummies | |
|---|---|---|
| Primary Health Claims | A gentle daily fiber that goes easy on your gut, real sugar, no sugar alcohols. | Daily prebiotic fiber, no sugar added, GLP-1 friendly, and the lowest price on the shelf. |
| Best for | Women who want a daily fiber that doesn't bloat them for taking it. | People shopping the lowest price and a no-sugar-added label. |
Read past the front of the jar
The front says no sugar added. The back says how. Here's both, side by side.
| Feature |
 Metamucil Fiber GummiesOrange · 72 gummies
|
 Seya Full Fiber GummiesBerry · 60 gummies
|
Why it matters |
|---|---|---|---|
| What it's built to do | Daily prebiotic fiber, no sugar added, GLP-1 friendly | A gentle daily fiber that goes easy on your gut | One's built to be cheap and skip the sugar. Ours is built to go down easy. |
| Total fiber per serving | 5 g, 18% of Daily Value1 | 6 g, 21% of Daily Value4 | A little more fiber, and enough to actually feel it. |
| Fiber structure | Inulin + soluble corn fiber (Fibersol)1 | Multi-fiber blend: resistant tapioca, prebiotic soluble, and insoluble cellulose4 | More than one fiber, doing more than one job. Not one big scoop of inulin. |
| How it's sweetened | no sugar added, sweetened with xylitol (a sugar alcohol)1 | 3 g real sugar, no sugar alcohols4 | Their no-added-sugar comes from a sugar alcohol, the exact thing that leaves you gassy. We'd rather use a little real sugar and skip it. |
| How you start | Ramp up: start with 1 to 3, the label warns of minor bloating while adjusting1 | Three a day, no warm-up4 | Theirs asks you to ease in, and warns you about bloating. Ours is three a day from the jump. |
| The famous fiber | No psyllium (inulin + corn fiber)1 | No psyllium either | The Metamucil name is psyllium. The gummy isn't. Worth knowing. |
| Magnesium | None | 80 mg, 19% of Daily Value4 | A good source of magnesium Metamucil leaves out. |
| Price per serving | About 65¢1 | $1.25 one-time · about $1.00 subscribed4 | Theirs is cheaper, no argument. Ours is the one that won't bloat you back. |
| Formulation philosophy | The cheapest fiber, and no added sugar by way of a sugar alcohol | A gentler fiber with a little real sugar and no sugar alcohols | Built to sit easy every day, not just to skip the sugar on the label. |
¹ Metamucil figures taken from its published product label, directions, and retail listings as of August 2026. Labels change, so this chart is reviewed quarterly and date-stamped at each revision.
No added sugar. So why the bloat?
Here's the trick with a "no sugar added" gummy. Somebody's still got to make it sweet.
And the usual way is a sugar alcohol.
Metamucil's is xylitol. Sugar alcohols don't get absorbed the normal way.
They sit in your gut, pull in water, and ferment… which is the polite way of saying gas, bloating, and a run for the bathroom. The exact stuff you took the fiber to avoid.
That's why their own label tells you to start slow and warns you about bloating while you adjust. It's not you.
It's the sweetener.
Seya went the other way. Three grams of real sugar, and zero sugar alcohols.
I'd rather own a small number on the label than hand you a gummy that bloats you for taking it.
The name says psyllium. The gummy doesn't.
The extras a brand puts in tell you what it's really after.
Metamucil Fiber Gummies
Seya Full Fiber
Metamucil's gummy is built lean and cheap. Two fibers, inulin and a soluble corn fiber, sweetened with xylitol so they can say no sugar added.
No minerals in the base one. And here's the kicker: none of it is psyllium, the fiber Metamucil got famous for.
The name's on the jar. The psyllium isn't.
Seya spends it differently. Fiber from three types, led by a gentler resistant fiber, a good source of magnesium, ginger, and sea moss.
A little real sugar, and no sugar alcohols.
Two different bets. Metamucil bets on the lowest price and a no-sugar-added label.
Seya bets on fiber that sits easy, and a couple things worth having beside it.
It's cheaper. Here's the catch.
Let me do this one straight, since it's the number everybody checks. And this time it goes their way.
Metamucil's gummy runs about 65 cents a serving. Seya's closer to a dollar.
Theirs is cheaper, flat out. If the lowest price is the whole game, they win it.
Here's what the extra buys with us. A little more fiber, a gentler blend, a good source of magnesium, and no sugar alcohols.
So you're not paying in bloat for what you saved at the register.
Cheapest fiber that might bloat you, or a bit more for fiber that won't. That's the trade.
So, which one
Here's the honest version. Metamucil's gummy is cheap, easy to find, and says "no sugar added" right on the front. If price and that zero are what you're shopping for, it delivers.
But that no-added-sugar comes from a sugar alcohol, and sugar alcohols are the thing that leaves you gassy and bloated. Seya trades a little real sugar to skip all that, adds more than one fiber and a good source of magnesium, and lets your gut off the hook.
Cheapest no-sugar-added label, or a gut that's not paying for it. That's the choice.
Shop NowStraight answers
Does Metamucil's gummy have psyllium?
No. Metamucil's famous for psyllium, but that's in their other products, not this gummy. The gummy's made with inulin and a soluble corn fiber. Seya's not psyllium either, for the record. This one's about how each gummy treats your gut.
Why does Seya have sugar when Metamucil says no sugar added?
Because Metamucil skips the sugar with xylitol, a sugar alcohol, and sugar alcohols are what make a lot of fiber gummies bloat you. I'd rather use three grams of real sugar and skip that. Own it, don't hide it.
Which one has more fiber?
Seya, a little, and it clears the FDA "excellent source" line. Both are real fiber. The bigger difference is what your gut does after.
Is Seya cheaper than Metamucil?
No. Metamucil's gummy is cheaper per serving, flat out. You're paying a bit more with us for a gentler fiber and no sugar alcohols. Whether that's worth it is the whole question.
