Verified
“2400 mg per serving.”
The panel declares 2,400 mg (2.4 g) of glucomannan per four quick-release capsules.
Carlyle Glucomannan 2,400 mg Review
SAC StudioBest Label DirectionsBUY
8.3/10SAC Product Score™
How the score breaks downHide breakdown
SAC Product Score™ — how it breaks down
- Dose vs the Trials30%8.0
- Label Directions & Safety20%9.6
- Testing & Manufacturing20%8.0
- Formulation & Form15%7.4
- Value15%8.6
Buy it if you take other medications and want the label to tell you how to space them
✓ Buy if…
- You take prescription medication and need spacing guidance
- You want the fullest directions on the bottle
✗ Skip if…
- You are vegetarian or vegan
- You want a serving smaller than four capsules
Read the full analysis
✓ Also buy if…
- You are fine with gelatin
✗ Also skip if…
- You want a named third-party lab
Carlyle's label reads like it was written by someone who has taken the product. Four quick-release capsules, 2,400 mg of glucomannan from konjac root, with at least 8 ounces of water or other fluid, 30 to 60 minutes before or with a meal. Then the notice: inadequate fluid may cause choking, do not take it if you have difficulty swallowing, do not take it before sleeping, and because fiber can affect the absorption of medications, do not take it within 1.5 hours of them. The capsule is gelatin with rice powder and vegetable magnesium stearate; 200 capsules, 50 servings.
How we built the SAC Product Score™ — 8.3/10
Dose vs the Trials30%8/10
2,400 mg of declared glucomannan a day is within the 2 to 4 g range, delivered as one four-capsule serving rather than split before meals.
Label Directions & Safety20%9.6/10
Water, timing, choking notice, a not-before-sleep rule and a 1.5-hour gap from medications: the most complete label of the eight.
Testing & Manufacturing20%8/10
Packaged and lab tested in the USA and a GMP mark on the label; no third-party lab named.
Formulation & Form15%7.4/10
Gelatin capsule with rice powder and vegetable magnesium stearate; non-GMO and free of gluten, soy and artificial colors.
Value15%8.6/10
About $0.38 per 2,400 mg serving, among the lower costs per gram for a capsule.
The product at a glance
- Form
- Quick-release capsule (gelatin)
- Serving
- 4 capsules
- Count
- 200 capsules (50 servings)
- Per serving
- 2,400 mg glucomannan (from konjac root)
- Directions
- 4 capsules daily with at least 8 ounces of water or other fluid, 30 to 60 minutes before or with a meal
- Other ingredients
- Gelatin capsule, rice powder, vegetable magnesium stearate
- Seals
- Non-GMO, GMP, packaged and lab tested in the USA
- Cost per dose
- ~$0.38 per serving
Marketing claims vs. reality
Verified
“Non-GMO and gluten free.”
Both are printed on the label along with a longer free-from list.
Partial
“Laboratory tested.”
The label says packaged and lab tested in the USA. That is the brand's own statement; no independent lab is named.
What our test actually found
01The only label that mentions your other pills
Viscous fiber can slow the absorption of medication taken alongside it. Carlyle is the one bottle here that says so and gives a number: keep 1.5 hours between them.
02A big single serving in gelatin
Four capsules at once is the largest serving on the list, and the gelatin shell rules it out for vegetarians. Splitting it two and two before meals is closer to how the trials dosed.
Pros & cons, no sugar-coating
Pros
- Most complete directions and safety notice
- Medication-spacing guidance printed
- 2,400 mg of declared glucomannan per serving
- Low cost per gram for a capsule
Cons
- Gelatin capsule
- Four capsules per serving
- Testing is the brand's own statement
The best-written label, in a gelatin shell
Carlyle earns its place on directions. If you are on medication, or simply want a bottle that tells you everything, it is the careful choice. Vegetarians and anyone wanting an independent testing claim should look two places up the list.
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
- Henry DA, et al. Br Med J (Clin Res Ed). 1986;292(6520):591-2.Henry DA, Mitchell AS, Aylward J, Fung MT, McEwen J, Rohan A · 1986 · British Medical Journal (Clinical Research Edition) · PMID 3004635
Glucomannan and risk of oesophageal obstruction
A British Medical Journal report on the risk of oesophageal obstruction with glucomannan, the reason labels now tell users to take it with plenty of water.
- Keithley J, Swanson B. Altern Ther Health Med. 2005;11(6):30-4.Keithley J, Swanson B · 2005 · Alternative Therapies in Health and Medicine · PMID 16320857
Glucomannan and obesity: a critical review
A critical review concluding that at 2 to 4 g per day glucomannan was well tolerated and produced significant weight loss in overweight and obese individuals, probably by promoting satiety and fecal energy loss, while calling for further safety and efficacy trials.