Manufacturing cluster · West Bengal
Tablet coating material supplied to Kolkata
Eastern India formulations, with a substantial ayurvedic and herbal sector alongside.
Written by the Rglax Pharma technical team, who formulate and manufacture every grade named on this page at our WHO-GMP works in Tahliwal, Una (drug manufacturing licence NNZ/23/238). Reviewed 3 September 2026. Licences and certificates.

What is made here
Manufacturing across the Kalyani, Barrackpore and Howrah belts covers domestic generics and a long established ayurvedic and herbal industry.
Why our range fits it
Where the finished product competes on price, coating cost is scrutinised. A pigmented seal coat under the finishing film means the top coat can be applied at a lower build-up, so a dark or herbal core is covered using less material overall rather than by loading more white film onto it.
How supply works
Road freight from Tahliwal across the northern and eastern belts.
Kolkata is one of the places we supply in West Bengal. The state page covers the manufacturing belt as a whole; this one covers what is specific to Kolkata.
Supplied from
- Works
- Plot No. 30, Industrial Area Tahliwal
- District
- Tehsil Haroli, Distt. Una 174507
- State
- Himachal Pradesh, India
- Delivering to
- Kolkata, West Bengal
- Licence
- NNZ/23/238
- Compliance
- WHO-GMP Compliance Unit
Industries served
- PharmaceuticalDrugs and Cosmetics Act
- NutraceuticalFSSAI
- Ayurvedic and herbalSchedule T
- Formulation developmentR&D and FDD teams
- Contract manufacturingToll and third party
Grades
The 4 grades that matter most in Kolkata.
Chosen against what Kolkata manufactures, not against what we would most like to sell. Each one links to its full page, with the process parameters it was developed on and the actives it was formulated for.
Colour or white seal coat
Pigmented sub-coat where the seal layer also has to cover the core.
Colour or white seal coat for cores that need covering as well as sealing, so the finishing film coat can be applied at a lower build-up.
- Base ·
- Aqueous or non-aqueous
- Finish ·
- White or colour
Aqueous film coat, extra white
Water base extra white film coat for cores that show through a standard white.
Aqueous extra white film coat developed for tablets where the core colour bleeds through a conventional white film. Calcium and Azithromycin cores are the usual cases. It gives higher opacity at the same build-up.
- Base ·
- Aqueous
- Finish ·
- Extra white, high opacity
- Formulated against ·
- Calcium, Azithromycin
Sugar film coat material
Non-aqueous sucrose based system for a sugar coated finish without a full sugar line.
Non-aqueous sugar film coat that covers the tablet with a sucrose based solution and provides protection from light and moisture. It is fully formulated on HPMC, so a conventional or auto coater delivers the sugar coated appearance without the traditional multi stage sugar coating process.
- Base ·
- Non-aqueous (solvent)
- Finish ·
- Sugar coated appearance
Hygroscopic adsorbent material
Holds moisture off hygroscopic actives during compression and afterwards.
HR100 is a hygroscopic adsorbent material for hygroscopic drugs. It works effectively on Sodium Valproate, L-Carnitine, Valproate Sodium and other actives that pick up moisture and create problems during compression and afterwards.
- Base ·
- Dry blend
- Finish ·
- Excipient blend
- Formulated against ·
- Sodium Valproate, L-Carnitine, Valproate Sodium
Read next
- Seal and Pre-CoatTransparent and coloured sub-coats that prepare the core for enteric or functional layers.
- Film Coating SystemAqueous and non-aqueous film coats, formulated to your application and regulatory requirement.
- Sugar CoatingFully formulated HPMC sucrose based systems for a classic sugar coated finish.
- Hygroscopic AdsorbentAdsorbent material for hygroscopic drugs that create problems during and after compression.
- Coating defects, and what causes themPicking, orange peel, twinning and colour variation traced back to the parameter that produces them.
- Coating dispersion calculatorA seal coat is made up thin, so solids loading is what decides the batch.
- Supplying manufacturers who exportThe documentation and pharmacopoeial references needed when the finished tablet leaves India.
- Send a requirementName the tablet, the target and the volume, and we quote for supply to Kolkata the same working day.




