HPMC (hypromellose) capsules are made from plant-derived cellulose rather than animal gelatin. They hold less moisture, resist cross-linking, and tolerate a wider humidity range — which makes them the default choice for vegan and clean-label products, hygroscopic or reactive fills, and supply chains that move across climates.
HPMC Capsules
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Performance in practice
As a non-protein cellulose ether, HPMC is chemically inert. It does not undergo the Maillard reaction or cross-link with aldehydes and reducing sugars the way gelatin can, so it suits reactive actives, aldehyde-generating excipients, and long shelf lives without the late dissolution surprises cross-linking causes. It is a dependable shell for hygroscopic powders, probiotics, and herbal extracts.
HPMC equilibrates at a substantially lower moisture level than gelatin and depends far less on retained water for its integrity. That smaller moisture reservoir means less exchange with a moisture-critical fill, and the film stays flexible in dry warehouses, arid climates, and winter production where gelatin turns brittle.
HPMC dissolution depends on the gelling system: some gelled grades can be sensitive to the ionic strength of the medium, while non-gelling or thermogelled grades dissolve more independently. This makes the grade a specification item rather than a detail — confirm the intended HPMC grade against your dissolution and release requirements.
Correctly specified HPMC capsules run cleanly on modern high-speed fillers, with consistent separation, seating, and locking. The film behaves slightly differently from gelatin, so expect to confirm tooling and rectification on your own line — dimensional consistency and tight lot control are what keep the line predictable.
HPMC is plant-derived and directly supports vegan, vegetarian, and clean-label positioning, and can be certified Halal and Kosher without animal-origin concerns. As a distributor we pass through the factory's GMP-accredited manufacturing and supply the batch-specific COA, dimensional and moisture specifications, and certificates for each product line.
Colour and finish
A range of stock colours in opaque and transparent finishes. Availability varies by material and size, and we colour-match to Pantone for custom and printed runs.
#000, #00e, #00, #0, #1, #2, #3, #4, #5
Open the capsule size chartTechnical answers
Yes. With consistent capsule quality and correctly tuned tooling, HPMC runs reliably on modern high-speed lines; confirm rectification on your own machine.
Usually a modest premium per thousand, but total production cost can improve when better stability reduces rejects, downtime, and shelf-life risk.
Yes. They are plant-derived and free of animal origin, and support vegan, vegetarian, Halal, Kosher, and clean-label positioning.
Yes, but dissolution depends on the gelling system, so the grade should be confirmed against your release requirements rather than assumed.
They tolerate a wider humidity band than gelatin, but sealed packaging and stable conditions still protect performance.
Next step
Get commercial terms, request trial samples, or build a custom colour and print specification. We'll come back with the documentation and practical detail needed to move forward.