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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Toxicological information

Exposure related observations in humans: other data

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Administrative data

exposure-related observations in humans: other data
Type of information:
experimental study
Adequacy of study:
weight of evidence

Data source

Reference Type:
Upper gastrointestinal lesions after potassium chloride supplements: a controlled clinical trial
McMahon GF, Akdamar K, Ryan JR, Ertan A
Bibliographic source:
the Lancet 13. 1059-1061

Materials and methods

Type of study / information:
in vivo experiment
Endpoint addressed:
repeated dose toxicity: oral
Principles of method if other than guideline:
the effects of a new microcapsulated potassium chloride formulation on the upper gastrointestinal tract mucosa was compared with that of a popular wax formulation in 48 volunteers
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
Potassium chloride
EC Number:
EC Name:
Potassium chloride
Cas Number:
Molecular formula:
potassium chloride
Details on test material:
no details given


Details on study design:
48 volunteers participated:
one part of the volunteers received 2 mg glycopyrrolat (to decrease gastric emtying), before they got 2.4 g KCL in two different formulations ( wax-matrix or microencapsulated), 3 times a day for 7 days; the other part of the volunteers were treated in the same manner but without glycopyrrolat
Exposure assessment:

Results and discussion

gastric irritation:
In general microencapsulated KCl caused no or only slight lesions in the musous membranes of the upper gastrointestinal tract of the voluntiers
KCl in wax matrix with or without glycopyrrolate caused inflammatory lesions, erosions and gastric ulcers. Lesions occurred most commonly in the prepyloric area and/or the entire antrum of the stomach but also in distal oesophagus or duodenal bulb.

Applicant's summary and conclusion