Metamucil vs NOW Psyllium 2026: Same Husk, Different Price
Same active ingredient, psyllium husk, at very different prices. NOW’s tablespoon carries 7 g of fiber (6 g soluble); Metamucil’s rounded teaspoon 3.4 g (2.4 g soluble) plus stevia sweetener and flavouring. Per 7 g of fiber, Metamucil costs 73% more ($0.51 vs $0.30). The premium buys taste and convenience, not fiber.
Informational comparison of label data and cost, not medical advice. Psyllium can interfere with medicines taken at the same time; separate them by two hours, and do not use it with a known bowel obstruction or swallowing difficulty.
The numbers, side by side
| Per label serving | NOW Psyllium Husk Powder | Metamucil 4-in-1 Sugar-Free |
|---|---|---|
| Ingredients | organic psyllium husk | psyllium husk with stevia sweetener and flavouring |
| Serving | 1 tbsp (9 g) | 1 rounded tsp (~5.8 g) |
| Total fiber | 7 g | 3.4 g |
| Soluble fiber | 6 g | 2.4 g |
| Servings per container | 38 | 72 |
| Fiber per container | 266 g | 245 g |
| Price | $11.30 | $17.97 |
| Cost per label serving | $0.30 | $0.25 |
| Cost per 7 g fiber | $0.30 | $0.51 |
| Buy | Check price → | Check price → |
Prices are the Amazon price for the exact container as of 2026-10-09 and move week to week. Fiber figures are each product’s Supplement Facts panel; Metamucil’s with-sugar powder is not compared because its figures are not independently confirmed on the label we hold.
The real difference: what is around the psyllium
Psyllium is the fiber most often studied: it forms a gel that stays intact through the colon (McRorie 2017, PMID 27863994), and it was among the fibers reviewed in a 2022 meta-analysis (van der Schoot 2022, PMID 35816465). Both products deliver it. Metamucil surrounds it with a flavour system and a smaller scoop; NOW sells the husk alone. Per 7 g of fiber the flavour system costs 73% more, and Metamucil’s 3.4 g serving means 3 servings to reach the 7 g claim dose that NOW reaches in 1.
The other difference is regulatory: several Metamucil products are over-the-counter drugs under FDA’s laxative monograph, while NOW’s is a supplement. That changes what the box may claim, not what the powder does. Neither is in a certification registry; the psyllium we track that is, Konsyl, is on the third-party-tested fiber page.
Where the 7 g figure comes from
The 7 g figure we compare against is a regulatory number: FDA's label claim for soluble fiber from psyllium husk (21 CFR 101.81) names 7 g of soluble fiber a day from psyllium, about 10 g of husk. The fiber grams printed per serving differ between the two labels, so count servings against 7 g of fiber to compare them, and talk to your clinician about how much is right for you.
Cost per year, at the label serving and at the claim dose
At one label serving a day and Amazon prices as of 2026-10-09, Metamucil 4-in-1 Sugar-Free runs $91 a year and NOW Psyllium Husk Powder $109, which looks close. Scaled to 7 g of fiber a day, the honest comparison, Metamucil is $188 a year against NOW’s $109, a gap of $79. The reason the two numbers diverge is the serving: Metamucil’s 3.4 g scoop needs 3 servings to reach 7 g where NOW’s tablespoon needs 1, so the per-serving price on the tub understates Metamucil’s cost by the same ratio. Every figure here is computed from the catalog at build time.
Starting either without the bloating
Psyllium swells, and the common reason people stop is starting at a full dose. With either product, begin with one serving a day in a full glass of water, hold it for a week, then add the second serving if you need it; the gel needs the water, and a dry scoop followed by a sip is where the choking warnings on both labels come from. Take it a couple of hours apart from medications, since the gel can slow a tablet’s absorption. Metamucil’s flavour system makes the first week easier for some people; NOW’s plain husk mixes into oatmeal, yoghurt or a smoothie for those who dislike it in water. Neither habit is worth anything if the tub sits unopened, which is the one argument for paying Metamucil’s premium.
Who each one is for
Choose NOW if you can drink plain psyllium in water and want the most fiber per dollar: one tablespoon is a working dose and the husk is labeled organic.
Choose Metamucil if taste decides whether you take it at all. A fiber you actually drink beats a cheaper one in the cupboard; just know the premium is for the flavour.
Skip both if psyllium bloats you badly even after a slow ramp: methylcellulose (Citrucel) is the usual next step, and the fiber ranking covers it.
Our picks
7 g fiber per tablespoon, organic husk only. $0.30 per 7 g of fiber.
3.4 g fiber per rounded teaspoon, stevia-sweetened. $0.51 per 7 g of fiber.
As an Amazon Associate we earn from qualifying purchases. We rank by label data and cost per dose, never commissions.
Frequently asked questions
Is Metamucil better than plain psyllium husk?
The active ingredient is the same: psyllium husk. Metamucil's 4-in-1 Sugar-Free adds stevia sweetener and flavouring around 3.4 g of psyllium fiber per rounded teaspoon; NOW's powder is organic psyllium husk and nothing else, 7 g of fiber per tablespoon. Per 7 g of fiber, the amount in FDA's psyllium label claim, Metamucil costs $0.51 and NOW $0.30, so you pay 73% more for the flavour. If you cannot stand plain psyllium, that is worth it; if you can, it is not.
How much fiber is in a serving of Metamucil vs NOW?
Metamucil 4-in-1 Sugar-Free: 3.4 g of total fiber (2.4 g soluble) per 1 rounded tsp (~5.8 g). NOW Psyllium Husk Powder: 7 g of total fiber (6 g soluble) per 1 tbsp (9 g). For 7 g of total fiber, that is 1 NOW serving or 3 Metamucil servings.
Is Metamucil a drug or a supplement?
Depends on the product. Some Metamucil SKUs are marketed as over-the-counter bulk-forming laxatives under FDA's drug rules; the 4-in-1 powders compared here carry supplement-style labelling. The psyllium is the same either way; the regulatory status changes the claims the box may make, not what the powder does.
Which is easier to take?
Metamucil dissolves and tastes of orange or, in this version, stevia; plain husk is gritty and thickens fast, so it needs a full glass of water drunk promptly. Both need the water: psyllium without enough fluid is how people end up bloated or worse. Start with one serving a day and add a second after a week.
Is either third-party tested?
Neither is in the NSF, USP or Informed Sport registries. We did not find a public lot certificate for either, so their testing is unverified rather than absent. The one psyllium we track with a registry listing is Konsyl (NSF/ANSI 173). See the third-party-tested fiber page.
Related
Sources
- McRorie JW Jr, McKeown NM. “Understanding the Physics of Functional Fibers in the Gastrointestinal Tract.” J Acad Nutr Diet. 2017. PMID: 27863994
- van der Schoot A, et al. “The Effect of Fiber Supplementation on Chronic Constipation in Adults: An Updated Systematic Review and Meta-Analysis of Randomized Controlled Trials.” Am J Clin Nutr. 2022. PMID: 35816465
- US FDA. 21 CFR 101.81, Soluble fiber label claim. ecfr.gov
- Product labels: Metamucil 4-in-1 Psyllium, Sugar-Free and NOW Psyllium Husk Powder, Organic; Amazon prices verified 2026-10-09.