Red-white empty capsule

Buyers must choose between Gelatin (animal-based) and HPMC (vegetable-based). Gelatin is cost-effective and has high mechanical strength, while HPMC is essential for Halal, Kosher, and Vegan markets, offering better stability for moisture-sensitive fillings.

Ensure the supplier complies with GMP (Good Manufacturing Practice) standards. For international trade, products should have FDA registration, ISO 9001, and specifically for the red-white coloring, confirm that the pigments used (like Titanium Dioxide or Iron Oxide) are food/pharma grade and meet the regulatory limits of the destination country (e.g., EU REACH or US Pharmacopeia).

Capsules range from Size 000 (largest) to Size 5 (smallest). You must calculate the tapped density of your powder to ensure the volume fits perfectly. Size 0 and Size 00 are the most common for dietary supplements, while smaller sizes are often used for potent pharmaceutical actives.

To prevent jamming in high-speed filling machines, verify the locking ring design (Snap-Fit) and dimensional consistency. The brittleness and moisture content (ideally 13-16% for gelatin) must be strictly controlled to avoid cracking during the encapsulation process.

Capsules are highly sensitive to temperature and humidity. Shipping must be done in temperature-controlled environments (15-25°C) with humidity between 35-65%. Avoid shipping during peak summer months without refrigerated containers (Reefer) to prevent deformation or sticking.

Prioritize Audited Suppliers who provide Third-Party Inspection Reports (SGS/Intertek). Request a Certificate of Analysis (COA) for every batch and use secured payment terms to mitigate financial risk until the quality is verified upon arrival.

Certain red dyes (like E127 Erythrosine) are restricted in some regions. Always ask the supplier for a Full Ingredient Disclosure of the colorants. Ensure the HS Code (typically 9602.00) is correctly declared to avoid delays in customs clearance.

Focus on Annual Volume Contracts rather than one-off spot buys to secure a 10-20% discount. Negotiate for customized printing (logo/brand name) on the capsule shell, which adds value and prevents counterfeiting, often at a low additional cost for high-volume orders.