Gelatin Capsules Containing PEG — QUALI-G™-PEG

Pharmaceutical capsules

Gelatin Capsules Containing PEG

Gelatin Capsules Containing PEG — QUALI-G™-PEG

Gelatin capsules with improved strength against brittleness.

Gelatin Capsules Containing PEG — QUALI-G™-PEG

Product Overview

  • Gelatin capsules to which polyethylene glycol (PEG) 4000 equal to 5 wt% is added as a plasticizer.
  • Mechanical strength of this type of gelatin capsules under low-moisture conditions is much greater than that of standard gelatin capsules.
  • Dissolution property of this type of gelatin capsules is the same as that of standard gelatin capsules.
  • Registered on Drug Master Files for the US and Canada.
  • Manufactured in a validated continuous production environment in compliance with Good Manufacturing Practice (GMP).
  • High-quality raw materials in conformity to the JP, the USP/NF, and the Ph. Eur. for specifications are used.
  • Preservative-free.
  • Suited to filling with hygroscopic APIs.
  • It is possible to fill with a combination of two or more types of preparations, such as solid, oily liquid, and semi-solid preparations (oily liquid and semi-solid preparations need the band sealing).

Capsule Colors

Capsule Colors

Hard capsules have the advantage to enhance their distinguishability.
Various capsule colors can be made upon request.

Capsule Printing

More than 90% pharmaceutical capsules made in Qualicaps® are imprinted to enhance distinguishability.

Two imprinting methods are available:
・Offset printing with various color ink
・UV lazer printing with no ink : Qualicaps®'s own technology

Offset printing

Offset printing uses edible ink,
in which various colors are available.

Offset printing
UV lazer printing

UV lazer printing technology utilizes the color change of titanium oxide by UV irradiation.
UV lazer can print fine design to capsules.

UV lazer printing
Offset printing UV lazer printing
Color Various Gray
Fineness Good Excellent

Capsule Sizes

Available in 7 sizes, from 00 to 5.

In addition, please contact us for inquiries about the special size.

Capsule Sizes
Size (♯) 00 0 1 2 3 4 5
Volume (mL) 0.93 0.68 0.49 0.37 0.28 0.21 0.13

Packaging Quantities (number included)

The standard numbers of capsules packed in each case for outside of Japan are as follows.

Capsule size (♯) Standard quantities
00 70,000
0 90,000
1 Transparent capsules 100,000
Opaque capsules 125,000
2 150,000
3 200,000
4 250,000
5 400,000

Test Data

Dissolution Test

QUALI-G™-PEG capsules, as same as QUALI-G™, have excellent dissolution properties, with not less than 80% of the capsule contents released within 5 minutes.

Test Data
Source: In-house data
Test conditions

Capsule size: ♯3

Apparatus: Paddle method, 50 rpm, UV detection

Dissolution medium: water, 900 mL

Capsule fill formulation: 20% acetaminophen mixture

Fill weight: 150 mg

Brittleness Test

Capsules are evaluated by pressing 100 capsules at 60 PSI for 15 seconds in a dedicated testing apparatus and checking for broken capsules.

QUALI-G™-PEG capsules are more resistant to brittleness than QUALI-G™ capsules when compared at the same moisture content, which is an
advantage when handling hygroscopic APIs.

Relationship with Relative humidity
Relationship with Relative humidity
Source: In-house data
Relationship with Capsule moisture content
Relationship with Capsule moisture content
Source: In-house data
Test conditions

Temperature: 25.0±3.0 ℃


We prepare accreditations and/or certifications for QUALI-G™-PEG. For further reference, please contact us for further information.

Residual Solvents Statement BSE/TSE Statement Elemental Impurities Statement
GMO Statement Allergen Statement Melamine Statement
Nitrosamines Statement Titanium Oxide Statement Gluten Statement
Irradiation Statement
SDS Capsule Specifications Flow of Manufacturing Capsules
Test Methods Capsule Theoretical Formula COA Sample

Additionally, Qualicaps® received ISO9001 and ISO14001 certification.
See ″ISO Management″ for further details.

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Inquiries / Downloads

For inquiries about capsules or equipment, or to download reference materials, click on the links below.