Metamucil Alternative: An Honest Side-by-Side With Myofiber

By the Muscleology Editorial Team | November 2026

If you're searching for a Metamucil alternative, you know the orange tub. Metamucil is one of the best-known fiber supplements on any store shelf, and it's built on psyllium husk, one of the most-studied fibers there is. It's a good product, and we'll say so plainly.

People still go looking for something else, though. Some want fiber from more than one source. Some don't want sweeteners or a flavored drink. Some want fiber that fits into a protein shake and brings plant omega-3 along with it. This is a straight comparison between Metamucil and our own Myofiber® Daily Fiber & Digestive Formula, so you can choose what fits your routine.

We make Myofiber, so treat us as an interested party. The Metamucil facts below come from Metamucil's own website, and the Myofiber facts come from our label. Fiber is personal, so if you have a digestive condition or take daily medication, talk to your doctor before adding any fiber supplement.

The 30-second answer

• Choose Metamucil if you want pure psyllium, a capsule or wafer option, flavored versions, or the lowest-effort pick from any drugstore.
• Choose Myofiber if you want fiber from both flaxseed and psyllium, 5 g of fiber a scoop with no sweeteners, and plant omega-3 that mixes into a shake.
• Either way, start low, drink plenty of water, and remember food comes first. A supplement fills a gap; it doesn't replace vegetables, beans and oats.

First, credit where it's due: what Metamucil does well

Metamucil is made from psyllium husk, a fiber rich in the viscous, gel-forming kind of soluble fiber. Metamucil says each serving of its powders delivers about 2.4 g of soluble fiber from psyllium. That is the basis for the psyllium heart-health claim Metamucil prints on its label, which ties 7 g a day of psyllium soluble fiber, as part of a diet low in saturated fat and cholesterol, to a reduced risk of heart disease.

It's also flexible. Metamucil sells powders, capsules and Fiber Thins, and the Sugar-Free Original Smooth version has no sweeteners at all. Directions are simple: one rounded teaspoon, up to three times a day for regularity. And you can buy it almost anywhere.

If Metamucil is working for you, there's no reason to switch.

Where Myofiber comes in

We built Myofiber because we wanted a fiber that fit the way our customers actually eat, often around protein shakes, and that didn't rely on one fiber source alone. Each 10.09 g scoop is a 10 g blend of flaxseed (3.3 g), psyllium husk (3.1 g) and lecithin (3.1 g) that delivers 5 g of dietary fiber, both soluble and insoluble.

Because of the flaxseed, every scoop also carries 1,670 mg of plant omega-3 (ALA), and the lecithin adds phospholipids including choline. There's 0 g of sugar and no sweeteners, and it's unflavored, vegan, non-GMO and gluten-free. It contains soy, from the lecithin.

Side-by-side comparison

Spec	Metamucil (Sugar-Free Original Smooth powder)	Muscleology Myofiber
Fiber source	Psyllium husk	Flaxseed (3.3 g) + psyllium husk (3.1 g)
Fiber per serving	2.4 g soluble fiber from psyllium	5 g total dietary fiber (20% DV), soluble + insoluble
Serving size	1 rounded teaspoon	1 scoop (10.09 g)
Directions	1 rounded teaspoon up to 3 times a day (regularity)	1 serving before breakfast + 1 before dinner
Other ingredients of note	Not listed on the product page	Lecithin 3.1 g, plant omega-3 (ALA) 1,670 mg, CLA 500 mg, choline 107 mg
Calories	See your tub's label	45 (3 g fat, 4 g carbs, 0 g sugar)
Sweeteners / flavor	Unflavored, no sweeteners (flavored sugar-free versions use aspartame)	Unflavored, no sweeteners
Formats	Powders, capsules and Fiber Thins	Powder
Allergen notes	Allergy alert for people sensitive to psyllium	Contains soy (from lecithin); also contains psyllium
Label health claim	Carries the psyllium soluble-fiber heart-health claim	No disease claims
Dietary notes	Not stated on product page	Vegan, non-GMO, gluten-free
Price	Varies by store; widely sold at drugstores and big-box retailers	$34.99 for 30 servings (15 days at 2 a day); 3-pack available
Company	Procter & Gamble	Family-run, Davie, FL, since 2003

A few honest notes on this table:

• These are measured differently. Metamucil reports 2.4 g of soluble fiber per serving. Myofiber reports 5 g of total dietary fiber, soluble plus insoluble. Don't compare 2.4 to 5 as if they were the same number.
• Metamucil has the heart-health claim; we don't. That claim is specific to psyllium soluble fiber at 7 g a day. Myofiber has psyllium, but we don't make that claim for it.
• Price. Metamucil's price depends on where you shop, so we left it out rather than guess. Myofiber is $34.99 for 30 scoops. At the label's two scoops a day, that's a 15-day tub, which is why the 3-pack exists. Do the per-day math at your store before you decide.
• Flavor and format. If you want orange-flavored powder, capsules or a wafer, Metamucil wins. Myofiber is an unflavored powder only.

Not sure what fits your goal? Find your stack in 60 seconds →

Four honest reasons to consider Myofiber

1. Two fiber sources, not one. Psyllium brings gel-forming soluble fiber. Flaxseed adds insoluble fiber too. If you want to understand why the type matters, read our guide to the best fiber supplement.

2. Plant omega-3 in the same scoop. 1,670 mg of ALA from flaxseed comes along with the fiber, plus lecithin. Nothing extra to buy, nothing extra to remember.

3. No sweeteners, no flavor. Myofiber disappears into water, smoothies or a protein shake. That makes it an easy add-on if you already drink Nitro^UP or ISO^UP every day.

4. Family-run since 2003. We're a family business in Davie, Florida, and real people answer our emails. Subscribe & Save takes 10% off and always ships free.

Who should stick with Metamucil (yes, really)

• You want pure psyllium, or your doctor told you to use it specifically.
• You prefer capsules, wafers or a flavored drink.
• You have a soy allergy. Myofiber contains soy lecithin.
• You want the lowest-effort option from any pharmacy shelf.

Who should try Myofiber

• You want fiber from flaxseed and psyllium together, with 5 g per scoop.
• You want no sweeteners and something that mixes into a shake.
• You like the idea of plant omega-3 coming along with your fiber.
• You eat a high-protein diet and your fiber keeps falling short. If bloating is the issue, see fiber for bloating and constipation.

On a GLP-1 medication and trying to keep digestion steady? Read our GLP-1 digestion guide, and check with your prescriber before adding fiber. For the bigger picture, see fiber supplements for gut health and prebiotics vs probiotics vs fiber.

How to start any fiber supplement

• Start with one serving a day and build up over a week or two. Metamucil gives new users the same advice and notes you may notice some bloating while your body adjusts.
• Drink plenty of water with every serving and through the day.
• Space it from medication. Metamucil's label says bulk-forming fibers like psyllium may affect how well medicines work and advises taking it at least 2 hours before or after medicines. Ask your pharmacist how that applies to you.

The bottom line

Metamucil is a proven, widely available psyllium fiber with flexible formats and a heart-health claim behind it. If that's what you want, it's a good choice.

Myofiber is for the person who wants fiber from flaxseed and psyllium together, no sweeteners, and plant omega-3 in a scoop that disappears into a shake, from a family-run brand. Different builds for different routines. Read both labels and pick the one you'll actually take every day. See Myofiber →

Not sure what fits your goal? Find your stack in 60 seconds →

Frequently Asked Questions

Is Myofiber a good alternative to Metamucil?

It can be, depending on what you want. Metamucil is psyllium husk, with about 2.4 g of soluble fiber per serving and several formats. Myofiber combines flaxseed and psyllium husk for 5 g of total dietary fiber per scoop, adds 1,670 mg of plant omega-3 (ALA), and has no sweeteners. If you need pure psyllium, capsules or a soy-free product, stay with Metamucil.

Does Myofiber contain psyllium?

Yes. Each scoop has 3.1 g of psyllium husk, along with 3.3 g of flaxseed and 3.1 g of lecithin, in a 10 g blend.

How much fiber is in Myofiber vs Metamucil?

Myofiber has 5 g of total dietary fiber per scoop, soluble and insoluble combined. Metamucil says its powders deliver about 2.4 g of soluble fiber from psyllium per serving. They are reported differently, so compare the label line that matters to you.

Does Myofiber have sugar or sweeteners?

No. Myofiber is unflavored, with 0 g of sugar and no sweeteners. Metamucil Sugar-Free Original Smooth also has no sweeteners, while Metamucil's flavored sugar-free powders use aspartame.

How should I take Myofiber?

The label says to take 1 serving in the morning before breakfast and 1 serving in the evening before dinner, mixed with 8 to 12 oz of your drink of choice. Start with one serving a day if you are new to fiber, and drink plenty of water.

Is Myofiber vegan and gluten-free?

Yes. Myofiber is vegan, non-GMO and gluten-free. It contains soy, from lecithin, and is made in a facility that also processes milk, egg, fish, shellfish, peanuts, tree nuts and wheat.

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.