Verified
“2000 mg per serving.”
The panel declares 2,000 mg of konjac root (glucomannan) per three vegetarian capsules.
Best Naturals Konjac Root Glucomannan 2,000 mg (2-Pack) Review
SAC StudioBest Bulk BuyBUY
8.5/10SAC Product Score™
How the score breaks downHide breakdown
SAC Product Score™ — how it breaks down
- Dose vs the Trials30%7.8
- Label Directions & Safety20%8.6
- Testing & Manufacturing20%8.6
- Formulation & Form15%8.4
- Value15%9.6
Buy it if you want capsules at close to powder prices
✓ Buy if…
- You want the lowest capsule price per gram
- You want a vegetarian capsule with a testing claim on the label
✗ Skip if…
- You want to try one bottle first
- You want a serving that splits before each meal by the label
Read the full analysis
✓ Also buy if…
- You are happy to buy two bottles at once
✗ Also skip if…
- Listing errors put you off a brand
Best Naturals sells this as a two-pack: each bottle holds 180 vegetarian capsules, 60 servings of 2,000 mg konjac root glucomannan. The label asks for three capsules daily with at least 8 oz of water 30 to 45 minutes before a meal and prints the caution about swelling in the throat. The front says 3rd Party Lab Tested and the side carries a GMP mark.
One thing to know: a graphic in the listing says 180 servings per container, while the Supplement Facts panel says 60. The panel is right.
How we built the SAC Product Score™ — 8.5/10
Dose vs the Trials30%7.8/10
2,000 mg per three capsules is a studied amount, but the label directs it once daily rather than before each meal as the trials did.
Label Directions & Safety20%8.6/10
At least 8 oz of water, 30 to 45 minutes before a meal, and a printed choking caution; the listing graphic misstates servings per container.
Testing & Manufacturing20%8.6/10
3rd Party Lab Tested on the front label and a GMP mark on the side; made in the USA.
Formulation & Form15%8.4/10
Vegetable cellulose capsule with silicon dioxide, magnesium stearate and microcrystalline cellulose; a long free-from list.
Value15%9.6/10
About $0.15 per serving at the two-bottle price, the cheapest capsule per gram here.
The product at a glance
- Form
- Vegetarian capsule (vegetable cellulose)
- Serving
- 3 capsules
- Count
- 2 bottles x 180 capsules (60 servings each)
- Per serving
- 2,000 mg konjac root (glucomannan)
- Directions
- 3 capsules daily with at least 8 oz of water, 30-45 minutes before a meal
- Other ingredients
- Capsule (vegetable cellulose), silicon dioxide, magnesium stearate (vegetable source), microcrystalline cellulose
- Seals
- 3rd Party Lab Tested, GMP, made in USA
- Cost per dose
- ~$0.15 per serving
Marketing claims vs. reality
Partial
“3rd Party Lab Tested.”
Printed on the front label. No lab is named and no report is linked, so we can confirm the claim is made, not what was tested.
False
“180 servings per container.”
This appears in a listing graphic. The Supplement Facts panel on the bottle says 60 servings per container, which matches 180 capsules at three per serving.
What our test actually found
01Capsules at powder prices
Two bottles, 120 servings, for under twenty dollars puts the cost per gram within a cent of NOW's loose powder, with the convenience of a capsule and the right warnings on the label.
02Read the panel, not the graphic
The listing's infographic triples the serving count. It is a marketing error rather than a label error, but it is the kind of carelessness that costs a product points for directions.
Pros & cons, no sugar-coating
Pros
- Cheapest capsule per gram
- Timing, water and choking caution printed
- Vegetarian capsule
- Third-party lab testing claimed on the label
Cons
- Sold as a two-bottle pack
- Listing graphic contradicts the panel
- Once-daily direction only
The bulk buy, with one listing error to ignore
If you already know glucomannan agrees with you and want months of it cheaply, this two-pack is the sensible purchase. Trust the Supplement Facts panel over the listing art, take it with a full glass of water before a meal, and split the three capsules across two meals if one large dose sits heavily.
Affiliate link — Super Achiever Club earns a small commission at no extra cost to you.
If this doesn’t fit — try these
NOW Glucomannan 575 mg
8.8/101.725 g of glucomannan per three vegetarian capsules, taken once or twice a day before a meal, with the water rule, the timing and the choking caution all printed on the bottle.
See it on the list →NOW Glucomannan Pure Powder
8.7/10Nothing but glucomannan: 2 g per half teaspoon, about 114 servings a jar, at half the cost per gram of any capsule here. It has to be measured, stirred and drunk before it gels.
See it on the list →Nature's Way Glucomannan
8.6/101.995 g of glucomannan per three vegan capsules with only magnesium stearate added, Non-GMO Project Verified, and the fullest choking warning on the list; the smallest bottle and the highest price per gram among the plain capsules.
See it on the list →Sources & further reading
- Sood N, et al. Am J Clin Nutr. 2008;88(4):1167-75.Sood N, Baker WL, Coleman CI · 2008 · American Journal of Clinical Nutrition · PMID 18842808
Effect of glucomannan on plasma lipid and glucose concentrations, body weight, and blood pressure: systematic review and meta-analysis
Pooling 14 randomized trials with 531 participants, glucomannan lowered total cholesterol by 19.3 mg/dL, LDL cholesterol by 16.0 mg/dL, triglycerides by 11.1 mg/dL, fasting glucose by 7.4 mg/dL and body weight by 0.79 kg.
- Onakpoya I, et al. J Am Coll Nutr. 2014;33(1):70-8.Onakpoya I, Posadzki P, Ernst E · 2014 · Journal of the American College of Nutrition · PMID 24533610
The efficacy of glucomannan supplementation in overweight and obesity: a systematic review and meta-analysis of randomized clinical trials
A meta-analysis of eight randomized trials found a non-significant difference in weight loss between glucomannan and placebo (mean difference -0.22 kg); adverse events included abdominal discomfort, diarrhea and constipation.