ClinicalTrials.gg
CompletedNCT02410785Updated Jan 28, 2016

Efficacy of Polyglucosamine for Weight Loss

An interventional study of Polyglucosamine and Placebo in Overweight and Obesity, sponsored by Certmedica International GmbH. Completed at 2 sites in 2 countries. Open to participants aged 21 Years to 75 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2016-01-28.

Primary conditionObesityRegistry: OverweightReclassifiedWhy we changed it
Registry
Overweight — the first condition term the registry derived for this study.
ClinicalTrials.gg
Obesity
Why
  1. The study's listed conditions name Obesity, a narrower term within Overweight.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by Certmedica International GmbH · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
115
Allocation
Randomized
Ages
21 Years to 75 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 333 studies in Obesity with a site in Germany — 70 open to participants now, 105 under way, 47 of them phase 3. Obesity · Germany.

Enrollment
164th of 273
115 · median 158
Started
2009
with 7 others
No phase
106 of 333
18 open now
Registered
97th of 333
by date

Among the 333 studies in Obesity with a site in Germany, this one is the 164th largest by enrollment of the 273 interventional ones that give a count, is one of 8 that started in 2009, is one of 106 with no phase, and was the 97th registered.

Obesity

11,522 studies on the registry are indexed under Obesity; 2,033 are open to participants now.

Browse Obesity studies →

Open to participants now

70 of the 333 studies in Obesity with a site in Germany are open now. Recruiting first, the newest first:

65 more — sign in →

All 70 open studies →

A study can be open while its sites in Germany have not opened yet or have stopped. Only those recruiting at a site in Germany →

Who these studies take

Of the 1,336 Obesity studies recruiting now, 377 (28%) set no upper age limit and 856 (64%) stop at 75 or younger; 168 take children under 18; 491 take healthy volunteers.

This study: 21 Years to 75 Years · all sexes · healthy volunteers too.

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 333 studies in Obesity with a site in Germany, or all of them as a file.
02

Study summary

The polyglucosamine, specification L112 is a medical device and in this clinical trial used for weight reduction of overweight and obese participants. The rationale for this study is to show that overweight can be reduced by taking 2 times daily 2 tablets with the main meals with the highest fat content.

Read the detailed description

To have a comparable diet condition, all participants in both groups had to follow the recommendations of the German clinical practice guidelines on the management and prevention of obesity.

One group had to take the polyglucosamine tablets and the other group placebo tablets for at least 24 weeks. It is known, that polyglucosamine is a fat binder acting in a physical-chemical manner, the positive charged fiber is bound to the negative charged dietary fat and this complex in unable to pass the gut wall into the body but is naturally excreted, hence this energy is not available. Therefore, this medical device should show a measurable reduction in body weight.

03

Conditions studied

  • Overweight and Obesity

Browse trials for

Keywords

  • obesity,
  • body weight,
  • overweight,
  • weight loss,
  • polyglucosamine,
  • L112
  • caloric restriction
  • physical activity
04

In context

Obesity Reclassified

11,522 studies on the registry are indexed under Obesity; 2,033 are open to participants now.

This study's enrollment of 115 is above the median of 67 across 9,006 interventional studies indexed under Obesity.

Browse Obesity studies →

Lead sponsor

Certmedica International GmbH is the lead sponsor of 8 studies on the registry; 1 is open to participants now.

Compared within Obesity, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Overweight. The counts are of registry records indexed under each term, refreshed daily. How we classify →

05

Who can participate

Ages eligible
21 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • > 26 and \< 45
  • waist circumference of more than 88 cm for women and greater than 102 for men.

Exclusion criteria

Exclusion Criteria:

  • pregnancy or breast-feeding, alcohol abuse, drug abuse or drug addiction, inability to fulfill the criteria of the trial protocol, cancer diseases, malignant tumors, pre-existence of chronic intestinal disease and known reactions to crustaceans
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

06

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
115 participants (actual)

Study arms

  • Active comparator
    Medical device polyglucosamine

    2 times daily 2 tablets with the two main meals with the highest fat content. Participants follow the German guideline with a hypo-caloric (-500 kcal daily) lifestyle and increased physical activity.

    Device: Polyglucosamine

  • Placebo comparator
    Placebo

    2 times daily 2 tablets with the two main meals with the highest fat content. Participants follow the German guideline with a hypo-caloric (-500 kcal daily) lifestyle and increased physical activity.

    Other: Placebo

Interventions

  • DevicePolyglucosamine

    ß-1,4 polymer of D-glucosamine and N-acetyl-D-glucosamine from the shells of crustaceans

  • OtherPlacebo

    Placebo tablet

07

What researchers measure

Primary outcomes

  1. Number of participants who could reduce their body weight by 5 or more per cent compared to the initial body weight.

    Time frame: 24 weeks

Secondary outcomes

  1. Change of body weight in kg

    Time frame: 24 weeks

  2. Change of BMI

    Time frame: 24 weeks

  3. Reduction of waist circumference

    Time frame: 24 weeks

08

Study locations

2 sites
  • Salztal Klinik GmbH
    Bad Soden-Salmünster, Hessia 63628, Germany
  • MAP Center
    Rende, Cosenza 87036, Italy
09

References and documents

Publications

  • Pokhis K, Bitterlich N, Cornelli U, Cassano G. Efficacy of polyglucosamine for weight loss-confirmed in a randomized double-blind, placebo-controlled clinical investigation. BMC Obes. 2015 Jun 10;2:25. doi: 10.1186/s40608-015-0053-5. eCollection 2015. PubMed 26217540 ↗

Individual participant data

Plan to share: No

10

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Aug 2009, a primary completion of Oct 2009 and a completion of Oct 2010. It does not say whether these dates are actual or estimated.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 27, 2015
First posted
Apr 8, 2015
Start
Aug 2009
Primary completionActual
Oct 2009
CompletionActual
Oct 2010
Last update
Jan 28, 2016
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jan 28, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT02410785
Lead sponsor
Certmedica International GmbH
Responsible party
Sponsor
First posted
Apr 8, 2015
Start date
Aug 2009
Primary completion
Oct 2009
Completion
Oct 2010
Last update
Jan 28, 2016

Study contacts

Karina Pokhis, MD
principal investigator · Salztal Klinik GmbH

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Mar 2015. You cannot join it, but the record below documents what was studied.

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Discussion

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