The 4 Best Psyllium Supplements of 2026
The best psyllium for most people is Konsyl Daily Psyllium Fiber Powder: 5 g of fiber a teaspoon for $0.43, on NSF/ANSI 173. Plain powder is the easiest and cheapest way to take psyllium. Capsules hold too little fiber to reach 10 g a day within their labels.
By Erin Rose Updated October 12, 2026 How we score
Our picks at a glance
Our pick for: Most people
Konsyl Daily Psyllium Fiber Powder
9.0/10 Our score
9.0/10, the top score of the 11 psyllium powders we score
Good
- On the NSF/ANSI 173 list (checked October 6, 2026)
- Full serving: 5 g per serving (we count 5 g or more)
- Label states the amount, with no blend
Watch for
- Costs 1.9 times as much per dose as the cheapest of its kind we score
- Fiber
- 5 g a teaspoon3 g of it soluble
- A serving
- $0.431 teaspoon, list price
- Testing list
- NSF/ANSI 173
- In the tub
- Psyllium husknothing added
- Tub
- 60 teaspoons, $25.99walgreens.com; the Amazon link sells a bigger tub
- Per 10 g of fiber
- $0.875 g a teaspoon
Our take
Why we pick it Plain psyllium powder is the best way to buy psyllium: easy to dose and cheap per gram. Of the 11 psyllium powders we priced, this is the only plain one we found on a public testing list (NSF/ANSI 173, which checks that the tub holds what the label says). In constipation trials, more than 10 g of fiber a day worked and 10 g or less did not (BDA 2025). At 5 g a teaspoon, that is 3 teaspoons (15 g), the most the label allows. Start with 1 and build up.
What you give up A little money. NOW Whole Psyllium Husks, below, costs $0.51 per 10 g of fiber against $0.87 here. It is the same plain husk, in coarser whole form.
One more thing Stir each teaspoon into a full glass (8 oz) of water and drink it right away (the label). How much to take.
Testing record
- NSF/ANSI 173: contents match the label Checked October 6, 2026.
Lists searched September 22, 2026 to October 6, 2026.
Take psyllium with a full glass of water. Do not take it if you have trouble swallowing. Take other medicines 2 hours before or after. All cautions
Our other 3 picks
The same fiber for less, in capsules, or with a flavor.
- Lower cost NOW Whole Psyllium Husks
- You want capsules Member's Mark 100% Psyllium Husk Fiber Capsules
- You want it flavored Metamucil 4-in-1 Psyllium Powder, Sugar-Free Orange
Our pick for: Lower cost
Good
- Full serving: 7 g per serving (we count 5 g or more)
- Close to the lowest cost per dose (1.1 times the cheapest of its kind we score)
- Label states the amount, with no blend
Watch for
- Not on any public testing list we check
- Fiber
- 7 g a serving2 level tablespoons (10 g)
- A serving
- $0.36brand list price
- Form
- Whole huskwhole husk, nothing added
- Size
- 16 oz tub, $15.99NOW’s list price
- Per 10 g of fiber
- $0.51at list price
Our take
Plain whole psyllium husk, 7 g of fiber in 2 level tablespoons, for $0.51 per 10 g of fiber against $0.87 for our pick. That is $0.36 a serving at NOW’s list price. Whole husk is coarser than powder: stir it into water or a thick drink.
Testing record
Not found on any testing list we check.
Lists searched September 22, 2026 to October 6, 2026.
Our pick for: You want capsules
Member's Mark 100% Psyllium Husk Fiber Capsules
4.0/10 Our score
4.0/10, the top score of the 4 psyllium capsules we score
Good
- The lowest cost per dose of its kind that we score
- Label states the amount, with no blend
- No FDA recall for the brand in 24 months
Watch for
- Not on any public testing list we check
- Below a full serving: 2 g per serving (we count 5 g or more)
- Fiber
- 2 g a serving5 capsules
- A serving
- $0.11brand list price
- Form
- Capsulesplain psyllium husk
- Size
- 800-capsule bottle, $17.98Member's Mark’s list price
- Per 10 g of fiber
- $0.56more than the label allows a day
Our take
The same fiber in a capsule: 2 g in 5 capsules, $0.56 per 10 g, the lowest-cost psyllium capsule we priced. The catch: the label allows up to 20 capsules a day, 8 g of fiber, so capsules cannot reach 10 g within the label. For that, use a powder. Swallow one capsule at a time, each serving with a full glass of water. Capsules vs powder.
Testing record
Not found on any testing list we check.
Lists searched September 22, 2026 to October 6, 2026.
Our pick for: You want it flavored
Metamucil 4-in-1 Psyllium Powder, Sugar-Free Orange
4.5/10 Our score
4.5/10, tied for #6 of the 11 psyllium powders we score
Good
- Label states the amount, with no blend
- No FDA recall for the brand in 24 months
Watch for
- Not on any public testing list we check
- Below a full serving: 3 g per serving (we count 5 g or more)
- Costs 1.9 times as much per dose as the cheapest of its kind we score
- Fiber
- 3 g a serving1 rounded teaspoon (5.8 g)
- A serving
- $0.27brand list price
- Form
- Flavored powdersweetened with aspartame
- Size
- 113-serving bottle, $29.99Metamucil’s list price
- Per 10 g of fiber
- $0.88at list price
Our take
Psyllium with an orange flavor and a sweetener (aspartame, so it has phenylalanine). A rounded teaspoon gives 3 g of fiber, $0.88 per 10 g at Walgreens’ price, close to our pick. The label allows up to 3 doses a day: 9 g at one rounded teaspoon each. Metamucil is sold as an over-the-counter drug for occasional constipation.
Testing record
Not found on any testing list we check.
Lists searched September 22, 2026 to October 6, 2026.
Which one is for you?
| Your situation | What to buy |
|---|---|
| Most people | Konsyl Daily Psyllium Fiber Powder: 3 teaspoons (15 g of fiber) a day cost $1.30 at list price (our pick) |
| Price matters most | NOW Whole Psyllium Husks, $0.51 per 10 g of fiber (above) |
| You want more fiber a scoop | 7 g of fiber in a level tablespoon, organic, $0.75 per 10 g: NOW Psyllium Husk Powder, Organic |
| You want it flavored, sugar-free | Metamucil 4-in-1 Psyllium Powder, Sugar-Free Orange, $0.88 per 10 g (above) |
| You want it flavored, with sugar | 4 g sugar a serving, $0.88 per 10 g: Metamucil 4-in-1 Psyllium Powder, Original Texture, with Sugar |
| You want whole husk | Same fiber, coarser, stirred into water or food. $0.70 per 10 g: Organic India Psyllium Whole Husk |
| Whole husk, a bigger scoop | 4.5 g of fiber a rounded tablespoon, $0.65 per 10 g: Yerba Prima Psyllium Whole Husks |
| You want capsules | Member's Mark 100% Psyllium Husk Fiber Capsules: up to 20 a day by the label, 8 g of fiber (above) |
NOW vs Konsyl psyllium: which to buy?
Buy Konsyl Daily Psyllium Fiber Powder. It is on NSF/ANSI 173, which checks that the tub holds what the label says. NOW’s psyllium is not on a list we check.
- Price: NOW Psyllium Husk Powder, Organic costs $0.75 per 10 g of fiber, against $0.87 for Konsyl, at each brand’s list price. NOW’s whole husks cost less still, $0.51.
- Fiber a scoop: NOW gives 7 g in a level tablespoon; Konsyl gives 5 g in a teaspoon. Both are plain psyllium husk with nothing added.
- Choose NOW if the lowest price matters more to you than a testing list.
Our main pick is the only plain psyllium we score that is on a public testing list (NSF/ANSI 173). Which fiber is on which list, with screenshots.
| Item | Value |
|---|---|
| NOW whole husk | $0.51 |
| Member's Mark capsules | $0.56 |
| Yerba Prima whole husk | $0.65 |
| Organic India whole husk | $0.70 |
| NOW psyllium | $0.75 |
| Konsyl psyllium | $0.87 |
| Metamucil with sugar | $0.88 |
| Metamucil sugar-free | $0.88 |
The 8 we show, out of the 15 psyllium products we score, and how we checked them
| Product | Score | Fiber | Per 10 g | Testing list | Buy |
|---|---|---|---|---|---|
| Konsyl Daily Psyllium Fiber Powderpowder | 9.0/10 | 5 g1 teaspoon (6 g) | $0.87 | NSF/ANSI 173 | Buy on Amazon |
| NOW Whole Psyllium Huskswhole husk | 7.0/10 | 7 g2 level tablespoons (10 g) | $0.51 | Not found* | Buy on Amazon |
| Member's Mark 100% Psyllium Husk Fiber Capsulescapsules | 4.0/10 | 2 g5 capsules | $0.56 | Not found* | Buy on Amazon |
| Metamucil 4-in-1 Psyllium Powder, Sugar-Free Orangeflavored powder · sugar-free (aspartame; contains phenylalanine) | 4.5/10 | 3 g1 rounded teaspoon (5.8 g) | $0.88 | Not found* | Buy on Amazon |
| NOW Psyllium Husk Powder, Organicpowder | 6.0/10 | 7 g1 level tablespoon (9 g) | $0.75 | Not found* | Buy on Amazon |
| Metamucil 4-in-1 Psyllium Powder, Original Texture, with Sugarflavored powder · 4 g sugar a serving | 4.5/10 | 3 g1 rounded teaspoon (7 g) | $0.88 | Not found* | Buy on Amazon |
| Organic India Psyllium Whole Huskwhole husk | 4.5/10 | 4 g1 tablespoon (5 g) | $0.70 | Not found* | Buy on Amazon |
| Yerba Prima Psyllium Whole Huskswhole husk | 4.0/10 | 4.5 g1 rounded tablespoon (5 g) | $0.65 | Not found* | Buy on Amazon |
* Not found on the NSF, USP or Informed lists (searched September 22, 2026 to October 6, 2026).
The score. Five marks: does a serving give at least 5 g of fiber, which we count as a full serving (our line); is the product on a public testing list; what 10 g of fiber costs against the cheapest in its group; does the label state the amounts; and any FDA recall naming the brand. Dose and testing are worth up to 3 points each, cost up to 2, label and recalls up to 1 each, for 10 in all. Scores checked October 12, 2026. How we score.
Not scored: Konsyl Organic Daily Psyllium and BulkSupplements Organic Psyllium Husk Powder (both on NSF/ANSI 173, but we could not confirm a price we could link), and Kirkland, Nutricost, Anthony’s and Kate Naturals (no price or label we could confirm). Reasons for each.
More: the best fiber of any type, how much psyllium to take, what psyllium does and which fiber is third-party tested (including a psyllium blend for drug-tested athletes).
Sources
- Chang L, et al. AGA-ACG Clinical Practice Guideline: Pharmacological Management of Chronic Idiopathic Constipation. Gastroenterology. 2023. PubMed 37211380
- van der Schoot A, et al. The effect of fiber supplementation on chronic constipation in adults: an updated systematic review and meta-analysis. Am J Clin Nutr. 2022. PubMed 35816465
- Jovanovski E, et al. Effect of psyllium (Plantago ovata) fiber on LDL cholesterol and alternative lipid targets, non-HDL cholesterol and apolipoprotein B: a systematic review and meta-analysis of randomized controlled trials. Am J Clin Nutr. 2018. PubMed 30239559
- Gibb RD, et al. Psyllium fiber improves glycemic control proportional to loss of glycemic control: a meta-analysis. Am J Clin Nutr. 2015. PubMed 26561625
- FDA. 21 CFR 201.319 (eCFR, read October 6, 2026). Metamucil drug facts label (DailyMed, read October 6, 2026).
- Labels: each brand’s page, the NIH Dietary Supplement Label Database or DailyMed. Testing: NSF/ANSI 173, NSF Certified for Sport, Informed Choice, Informed Sport and USP Verified, searched September 22, 2026 to October 6, 2026. Recalls: openFDA. Prices: each brand’s own list price (Walgreens, iHerb or Sam’s Club where named), checked October 6, 2026.