Vitamin c tablet

Buyers must prioritize pharmaceutical-grade or food-grade specifications depending on the intended use. Key parameters include assay content (typically 97% to 105% of the labeled amount), disintegration time (usually <30 minutes for non-coated tablets), and heavy metal limits (Lead <0.5ppm, Mercury <0.1ppm). Ensure the supplier adheres to GMP (Good Manufacturing Practice) and holds certifications such as ISO 22000 or HACCP to guarantee production safety and consistency.

Vitamin C (Ascorbic Acid) is highly sensitive to light, heat, and moisture. You should request stability testing reports (accelerated and long-term) from the supplier. For bulk purchasing, ensure the packaging uses amber glass bottles or high-barrier induction-sealed HDPE bottles with desiccants included. A standard shelf life should be 24 to 36 months when stored in a cool, dry place.

Compliance varies significantly by region. For the US market, products must comply with FDA 21 CFR Part 111 (Dietary Supplement GMPs) and require a VPC (Voluntary Product Certification) or third-party lab verification. For the EU, products must meet EFSA (European Food Safety Authority) guidelines and REACH standards. Always verify that the labeling (ingredients, dosage, and warnings) matches the destination country's legal language and regulatory requirements.

Professional suppliers on Made-in-China.com offer extensive customization. This includes dosage variations (100mg, 500mg, 1000mg), formulations (chewable, effervescent, or time-release), and flavor profiles (orange, lemon, berry). You can also request private labeling and custom bottle shapes. Ensure the MOQ (Minimum Order Quantity) for custom formulations is clearly defined, usually ranging from 50,000 to 100,000 tablets.

Always conduct pre-shipment inspections through reputable third-party agencies like SGS or Intertek. Request a Certificate of Analysis (COA) for every batch and perform random laboratory testing to verify the actual Vitamin C content against the label claim. Using Trade Resources on Made-in-China.com can help identify Audited Suppliers with verified production capabilities.

Vitamin C is a commodity with fluctuating raw material costs. It is advisable to lock in prices for 6-12 months through a framework agreement if you have stable demand. For payment, use Secure Payment services or Letter of Credit (L/C) for large first-time orders to ensure funds are only released upon proof of shipment and quality compliance.

Since Vitamin C degrades at high temperatures, avoid shipping during peak summer months in non-temperature-controlled containers if the transit time exceeds 30 days. Request palletization with shrink wrap and moisture-proof lining inside the shipping cartons. Ensure the HS Code (typically 29362700) is correctly declared to avoid customs delays and potential fines.