Capsules

Selecting the correct shell material is critical for stability. Gelatin capsules are the industry standard for cost-effectiveness and rapid dissolution, but HPMC (Vegetable) capsules are essential for moisture-sensitive ingredients, vegan-friendly branding, and avoiding cross-linking issues. For liquid fills, Softgel capsules are required to ensure airtight sealing and high bioavailability.

Buyers must prioritize disintegration time (typically <15 minutes), moisture content (13-16% for gelatin, 3-7% for HPMC), and brittleness levels. Ensure the capsules meet USP/EP (United States or European Pharmacopoeia) standards for weight variation and microbial limits to prevent production downtime on high-speed filling machines.

Suppliers must hold a GMP (Good Manufacturing Practice) certificate and ISO 9001/22000. For specific markets, FDA DMF (Drug Master File) registration is a significant indicator of quality. Additionally, Halal and Kosher certifications are often non-negotiable for global distribution to ensure religious and dietary compliance.

Request a Pantone color match and a pre-production sample. High-quality suppliers use edible, non-toxic inks (such as shellac-based) and offer axial or radial printing. Verify that the pigments used are approved by the destination country's food and drug authority (e.g., Titanium Dioxide-free options for the EU market).

The biggest risks are temperature and humidity fluctuations. Capsules can melt, stick together, or become brittle if exposed to extreme conditions. Always insist on climate-controlled shipping (Reefer containers) or specialized thermal packaging, and include data loggers to monitor environmental conditions during transit.

Focus on tiered pricing based on annual volume rather than a single PO. Request a Quality Agreement (QA) that defines acceptable AQL (Acceptable Quality Levels) for defects like dimples, cracks, or locked capsules. On Made-in-China.com, prioritize 'Audited Suppliers' to ensure the factory has been physically verified.

Utilize Secured Trading Services provided by the platform to ensure payment is only released upon verification of shipping documents. For first-time large orders, hire a third-party inspection agency (like SGS or Intertek) to perform a pre-shipment inspection (PSI) to verify the COA (Certificate of Analysis) against the actual batch.

Capsules are often classified under HS Code 9602.00 or 1905.90. You must provide a BSE/TSE-free certificate for gelatin capsules to clear customs in many Western countries. Ensure all documentation clearly states the intended use (food supplement vs. pharmaceutical) to avoid unnecessary delays or seizures by health authorities.