Chitosan With Glucomannan | GNC
Gluten Free Gluten Free
Dairy Free Dairy Free
Soy Free Soy Free
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Corn Free Corn Free
Sodium Free Sodium Free
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GNC Total Lean® Chitosan With Glucomannan


Item # 485712
Gluten Free Gluten Free
Dairy Free Dairy Free
Soy Free Soy Free
No Artificial Flavors/Colors No Artificial Flavors/Colors
Corn Free Corn Free
Sodium Free Sodium Free
View All Specialty Diets

Product Information



GNC Total Lean® Chitosan with Glucomannan is scientifically formulated to help promote a feeling of fullness* and encourage colon health.* GNC Total Lean® products were created to help you take control of your weight loss goals, focus on your health and still be totally you.


  • Contains 1g of dietary fiber
  • Features 1000mg of chitosan, which is a non-soluble fiber that serves as a bulk forming agent and encourages colon health by helping to speed food through the digestive system*
  • Promotes a feeling of fullness*
  • Supports digestive & colon health


Nutrition Facts
Serving Size  2 Capsule(s)
Servings Per Container  60

Amount Per Serving     % DV

Total Carbohydrate 1g  
  Dietary Fiber 1g  

Chitosan  1000 mg   **
Proprietary Blend (Fructooligosaccahrides (FOS), Inulin, Glucomannan Powder (Amorphophallus konjac), Psyllium Seed Husks Powder  400 mg   **

** Daily Value (DV) not established.
Other Ingredients
Gelatin, Stearic Acid , Magnesium Stearate, Silicon Dioxide, Microcrystalline Cellulose
CONTAINS: Crustaceans (Shrimp)
Label (click image to enlarge)

How To Use

As a dietary supplement, take two or more capsules with at least 8 oz. of water or other fluid, twice daily. Taking this product without enough liquid may cause choking. See warning.
Taking this product without adequate fluid may cause it to swell and block your throat or esophagus and may cause choking. Do not take this product if you have difficulty in swallowing. If you experience chest pain, vomiting, or difficulty in swallowing or breathing after taking this product, seek immediate medical attention. Consult your physician prior to using this product if you are pregnant, nursing, taking medication, or have a medical condition. Discontinue use two weeks prior to surgery., Keep out of reach of children.
Store in a cool, dry place away from light.
Distributed by:
General Nutrition Corporation
Pittsburgh, PA 15222


4.1 / 5.0
27 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
I have been using this for years and the positive results are still there.
This is an easy capsule to take, with no aftertaste.
January 31, 2019
5 months ago
I didn't fell any difference. I really don't know in what I can believe.
January 21, 2018
1 year ago
It's GOLD!
I lost 35 lbs in the space of 8 months. Absolutely effortless!!!!
October 31, 2017
not what I thought it would be
Give me plain Chitosan don't go muck it up with so called good extras Chitosan by itself does the job just fine for me. I have a digestive problem and for years this has been my go to for same. all other things have not helped this has and does the trick every time!!
June 3, 2017
over 2 years ago
Doesn't work for me
I have been taking this for over a month and this does not work for me. I will continue to take it to use up the 2 bottles that I got, but so far, I actually feel more hungry and eating more.
February 24, 2016
Keeps Me Feeling Full
Since I have not been eating too much fiber, I started out with one pill a day with at least 8 oz of water until my system got use to the fiber. I am now up to the 2 pills with no problem. Normally I am a person who can eat a meal and still be hungry and no matter how much I try I still want to eat. But with this product it keeps me feeling fuller. So for me by watching my carbs, trying to get more walking in my day and taking this product I feel that I am in more control.
January 6, 2015
Lose weight, effective
Weight loss is effective, with Total Lean L-Carnitine 1000
November 29, 2014
July 4, 2014
Effective product
i take this product everyday and it's great and work in less then an hour. I feel great and with more energy
September 5, 2013
Would but product
Take 2 times a day along with exercising. Seeing results.
September 5, 2013
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 31 questions Browse 31 questions and 27 answers
My understanding is that this product is a fiber supplement. Why, then, does it only contain 1g of fiber? There are many other easier and far less costly ways to increase my intake 1g of fiber in my diet without this capsule. What gives?
A shopper on Nov 7, 2012
BEST ANSWER: It looks like this supplement contains fibrous ingredients that are thought to block the absorption of dietary fats and cholesterol. Chitosan is used to treat obesity, high cholesterol, and Crohn’s disease. It is also used to treat complications that kidney failure patients on dialysis often face, including high cholesterol, “tired blood” (anemia), loss of strength and appetite, and trouble sleeping (insomnia). Chitosan is extracted from the shells of shrimp, lobster, and crabs. The second ingredient, glucomannan, might work in the stomach and intestines by absorbing water to form a bulky fiber which treats constipation. It may also slow the absorption of sugar and cholesterol from the gut, helping to control sugar levels in diabetes, and reducing cholesterol levels. In other words, while containing some fiber and being made of fibrous materials, it is not strictly a fiber supplement.
Will taking this product affect the absorption of the multivitamins and other over the counter and prescription items that I take?
A shopper on Mar 12, 2013
BEST ANSWER: You should consult your doctor about possible interactions with your prescriptions and other drugs that you may be taking.
Does the product contain konjac root fiber?
A shopper on Jan 8, 2013
BEST ANSWER: This product contains amorphophallus konjac.
is this product safe to use if you have had your galbladder removed?
A shopper on Oct 26, 2012
BEST ANSWER: Yes, it is safe to take.
i dont really have a question about just one product but i work out 6 days a week and eat 2 times a day i weigh 164 and i am on birth control but i have not found a product that will help me loose weight.. even with the green tea products i work out and eat right but dont loose weight. i want to know what product would work okay for me it wouldnt be bad if i was tall but im only 4 11 ao 164 look fat i just need a product that will hlp me out bcuz working out 6 days a week for almost 3 hours is not getting me anywhere
A shopper on Oct 16, 2012
BEST ANSWER: First thing I would talk with your doctor about any issues you are having. My suggestion is to look at Hi-Tech Pharmaceuticals Raspberry Ketones. Raspberry Ketones have been shown to boost metabolism and curb appetite, which helps lose pounds.
I saw a comment that said "if you are allergic to seafood not to use"...well, I'm allergic to Catfish, but can eat tuna, lobster, crab shrimp, and salmon. So, can I take this product?
A shopper on Oct 29, 2012
BEST ANSWER: That is something you would have to discuss with your doctor.
can I take GNC Chitosan with glucomannan with GNC CLA? I've been taking Chitosan for a few days now & wondered if it is ok to combine. thank you.
A shopper on Aug 2, 2012
BEST ANSWER: Yes you can safely take this product along with GNC CLA. Just sure to drink lots of water.
When is the best time to take this product and how many times a day?
A shopper on Nov 30, 2009
BEST ANSWER: This product I watched on tv show in Japan long ago.
Ideal is 30min to 1hr before meal.
I had experience chitosan before.
That will help you keep full of stomach.
Make sure do not eat too much meal when you take chitosan.
This is great for always who have taken over calories.
I would say take twice a day before meal.
I am planning to get pregent in 6 month time, can I still use Chitosan with Glucomannan?
A shopper on Mar 15, 2017
BEST ANSWER: We would recommend speaking with your doctor.
How long can you take this consecutively for? Is there a time limit like 3 months of how long you should take then stop?
A shopper on Feb 28, 2017
BEST ANSWER: This is not a time specific product.
Can I take this while breastfeeding?
A shopper on Oct 27, 2013
BEST ANSWER: You must contact your doctor if you are pregnant or nursing before use.
When is the best time to take this and how many at one time also how many times a day can it be taken
A shopper on Jan 20, 2013
BEST ANSWER: User recommendations indicate that it is most effective if taken in the morning. Recommended dosage is 2 tablets. Drinking plenty of water is strongly recommended by both the manufacturer and users.
Can this product be taken with coumadin (blood thinner) with out messing with blood level? Also with zocor for colesteral?
A shopper on May 6, 2012
BEST ANSWER: I would NOT recommend taking this product with the medications you mentioned without consulting your doctor first. This is in accordance with the directions on the manufacturer's label. There have been some cases where this type of supplement has had a reaction with prescription medications, so it is better to be safe than sorry.
how old do you need to be to purchase this item ? is it dangerous to take if under 21? how about under 18?
A shopper on Apr 23, 2012
BEST ANSWER: This should not be given to anyone under 18, as it may be a choking hazard. The directions state to take this product without adequate fluid may cause it to swell and block your throat or esophagus and may cause choking. Do not take this product if you have difficulty in swallowing. If you experience chest pain, vomiting, or difficulty in swallowing or breathing after taking this product, seek immediate medical attention.
Does chitosan/glucomannan block 20% of carb intake and also 30% of the fat? ALSO IS THIS PRODUCT SIM TO ALLI
A shopper on Apr 22, 2012
BEST ANSWER: The blocking of 30% fat and 20% carbs is dubious, as GNC Chitosan used 1000mg doses in their trials and these contain only 400mg doses. They are similar to other diet pills in that they suppress cravings and clean out the digestive tract.
How ofthen do you take the pills
A shopper on Apr 5, 2012
BEST ANSWER: You can take up to two pills per day, but do not exceed this!
what time of the day would you take the 2 pills?
A shopper on Mar 23, 2012
BEST ANSWER: There is no specific time recommended for taking GNC Chitosan, but most users choose to take them with their morning meal. Just remember to drink at least 8 oz of fluid with the pills.
I am looking for a fiber supplement and was wondering if you are able to take this if you hav esophogus ulcers?
A shopper on Mar 20, 2012
BEST ANSWER: If you have a pre existing condition, consult your physician.
I have been taking 2 caps in the morning for about two months.....can I take more than 2 a day?
A shopper on Feb 14, 2012
BEST ANSWER: The max recommended dose of GNC Chitosan with Glucomannan is two (2) capsules per day, so no you shouldn't take any more than two.
i eat more now then i did been 1 week now.
A shopper on Jan 29, 2012
BEST ANSWER: This supplement is a source of fiber, not a diet pill or pill that will curb your appetite.
Do you take this product just once a day,or take it half an hour before each meal of the day.
A shopper on Nov 8, 2011
BEST ANSWER: You take two capsules with at least 8 fl oz of water or other fluid once a day.
Is this safe to take while breastfeeding?
A shopper on May 26, 2011
GNC Chitosan with Glucomannan and Tripple fish oil... do these two products help with belly fat? GNC told me they do, and recommended them so I bought them.
A shopper on Apr 8, 2011
BEST ANSWER: The objective of the study that I link at the bottom was to examine the hypocholesterolemic effect of consuming a supplement containing equal amounts of chitosan and glucomannan in overweight humans.

Basically it helps but not in the magic pill kind of way. It is a fiber supplement. Diet and exercise are the key.
I take aggrenox( a bloood thinner)twice aday,can i take this without any problem.
A shopper on Feb 10, 2011
BEST ANSWER: 1) You must consult your doctor reguardless of what people say here on this board.

2) If this fiber supplement acts anything like the fiber found in prickly pear cactus (nopal) you must not take this fiber AT THE SAME TIME you take any of your medications. Some fibers have the tendency to cling onto some medications which basically stops them from entering your body.
That is why I say see your doctor. The Dr. will be able to tell you if you need to stagger the fiber and your blood thinner. Example: Take fiber pills only 1-2 hours after taking your blood thinners.
On average has anyone lost weight with this product. I was a big fan of the now nonexisting "Exercise in a Bottle" and I lost a lot of weight. It also contained chitosan. Does this really work. For me; it is this or a gastric bypass.
A shopper on Jul 23, 2010
BEST ANSWER: Gastric bypass, sorry.
I have taken chitosan before and whether or not the fat was blocked I could not tell. It does, however, cause minor bloating and stomach issues in the beginning. You may experience weird diarhhea. If you are counting on this product to help you avoid weightloss surgery,you will be disappointed. For everyone else, this works only if you exercise regularly and have a reasonably healthy diet.
Does this really block the fat ????
A shopper on Jun 8, 2010
BEST ANSWER: If you search Chitosan, I believe you will find that it has been used to absorb grease and oils in some sort of industry (I can't recall which). So it makes sense it absorbs fat in the digestive process. I haven't tried it myself yet but then that is why I am here today. Glucomannan is konjac root and will fill you up big time, hence the water warning. I have tried this and it does work like a charm! Hope this helps
I need some diet pills to not make me hungry?
A shopper on Dec 30, 2016
What does this have to do with my search for Red Rice yeast?
A shopper on Nov 29, 2016
Can you take this product after the expiration date?
A shopper on Sep 1, 2016
I'm looking for a product to bulk up stools?
A shopper on Jul 12, 2016