Vitamin D3 Softgel Manufacturer for Custom Dosage Forms

EUPHM runs rotary die encapsulation lines with a practical output of 1.2 to 2.4 million softgels per 24-hour cycle, depending on fill weight and shell formulation. For vitamin D3, the typical fill weight sits between 250 mg and 600 mg, which covers 1,000 IU to 5,000 IU in a single softgel. Larger 10,000 IU doses are usually filled at 800 mg to 1,000 mg in a 20 oblong.

Because D3 is oil-soluble, the fill mass is prepared in stainless steel jacketed tanks under nitrogen blanket. That step limits oxidation and keeps the vitamin concentration uniform from the first capsule to the last. Incoming D3 raw material is assayed by HPLC before release to production. Line changeover and cleaning are documented per SKU, which matters when a single order covers multiple strengths or flavours.

The carrier oil affects both stability and how the softgel behaves on the shelf. Standard options are MCT oil from coconut or palm, refined sunflower oil, safflower oil, olive oil, and flaxseed oil. MCT is the most common choice for D3 because it is low-viscosity, neutral in taste, and resistant to oxidation. For vegan or vegetarian positioning, the shell can be made with modified tapioca starch or carrageenan instead of bovine gelatin.

D3 itself is available as cholecalciferol from lanolin or as lichen-derived D3 for vegan labels. Potency is standardised to 100,000 IU/g or 1,000,000 IU/g concentrates, which gives formulators tight control over the final label claim. Optional co-actives include vitamin K2 as MK-7, calcium, magnesium, omega-3, and vitamin E as an antioxidant. Natural colourants such as annatto or beta-carotene can be added, and the shell can be opaque or clear depending on how light-sensitive the formula is.

Every D3 softgel batch is tested for assay, disintegration, fill weight uniformity, and microbial limits before release. Heavy metals and residual solvents are tested on a scheduled basis or per market requirement. Retain samples are held for the full shelf life plus 12 months. EUPHM operates a GMP-certified facility with ISO 22000 and HACCP systems, and can supply halal and vegan documentation where the formula and supply chain support the claim.

For export, the standard document pack includes certificate of analysis, certificate of free sale, GMP certificate, material safety data sheet, and a halal certificate where relevant. US-bound orders can be produced in an FDA-registered facility. Labels can be printed for US, EU, UK and GCC markets, including bilingual Arabic-English artwork. Shipping is arranged by air or sea from Shenzhen or Hong Kong, with DDP terms available for first orders.

Every vitamin D3 softgel batch is tested against a written specification before release. Incoming D3 raw material is assayed for identity and potency by HPLC, with the certificate of analysis from the supplier verified against an in-house standard. The fill mass is checked for homogeneity after mixing, and encapsulated softgels are sampled at start, middle and end of the run. Microbial testing covers total aerobic count, yeast and mould, E. coli and Salmonella, with results available within 5 to 7 working days. Heavy metals are tested by ICP-MS on the finished softgel, and disintegration is run in water at 37°C to confirm the shell meets the 30-minute limit for gelatin softgels.

The batch record follows the softgel through weighing, mixing, encapsulation, drying, inspection and packaging. Each critical step is signed off by an operator and a second person, and any deviation is logged with a corrective action. Retention samples of every batch are kept for the full shelf life plus 12 months, stored under labelled conditions at 25°C/60% RH and 30°C/65% RH. A certificate of analysis is issued per batch and includes the batch number, production date, expiry date, test parameters, acceptance criteria, results and the analyst signature. Buyers receive the COA as a PDF and can request raw data for any parameter.

Stability follows a protocol of 0, 3, 6, 9, 12, 18 and 24 months at 25°C/60% RH and 30°C/65% RH, with accelerated conditions at 40°C/75% RH for 6 months. Vitamin D3 potency, peroxide value of the carrier oil, appearance, disintegration and microbial limits are monitored at each point. Where a formula includes a carrier oil with a short induction period, we run a Rancimat test to set the expected shelf life before the first production batch. Stability data from previous batches of the same formula can support a new SKU, but a new flavour or colour system triggers a fresh 3-month accelerated study.

Documentation for export includes the batch COA, a specification sheet, a material safety data sheet for the finished softgel, and a free-sale certificate issued by the local authority where the buyer needs one for registration. All records are kept for at least 5 years after the expiry date. If a buyer's market requires a specific test not in our standard panel, such as a pesticide screen or an allergen statement, it is added to the specification before the first batch and priced into the quotation.

Softgels are packed in HDPE bottles with induction seals and child-resistant or standard caps, in blisters of 10 to 30 softgels, or in stick packs and sachets for single-serve formats. Bottle sizes run from 30 to 180 softgels, with desiccant where the shell needs it. Labels can be supplied by the buyer or printed in-house. For US retail, the label must carry the supplement facts panel with vitamin D3 in IU and mcg, the serving size, other ingredients, a domestic address or phone number, and the required 'Keep out of reach of children' statement. EU labels need the nutrition declaration per 100 g and per serving, plus the allergen and storage statements.

Lot and expiry coding is applied to each bottle, carton and shipper. The format follows the buyer's market: YYYYMMDD or DDMMYYYY for expiry, with the lot number printed on the bottle shoulder and the carton end. Cartons are specified to the buyer's retail requirements, with dimensions, board grade and print colours confirmed on a dieline before production. Pallet configurations are set per SKU, typically 48 to 60 cartons per pallet, shrink-wrapped and strapped, with a pallet label showing SKU, lot, quantity and gross weight. For Amazon FBA, we can print and apply FNSKU labels, poly-bag units where required, and pack to the buyer's carton weight limit.

Retail compliance checks are built into the artwork approval stage. The label proof is reviewed against the target market's rules for claims, units and mandatory warnings before printing. For UK and EU retail, the address of the responsible person must appear on the label. For Middle East markets, Arabic labelling and halal marks are added where the buyer holds the certification. We do not print certification logos unless the buyer provides a valid certificate that covers the specific product and production site. Artwork files are archived with the batch record so a label can be traced to the exact production run.

Samples for a vitamin D3 softgel are produced in 7 to 10 working days after the formula and shell specification are agreed. The sample quantity is typically 100 to 300 softgels in bulk or in the buyer's chosen bottle, enough for stability checks and a retail mock-up. Sample cost is quoted per project and can be credited against the first mass-production order. Formula changes after sampling, such as a different carrier oil or a new potency, restart the sample timeline. Mass production runs 20 to 35 working days after written approval of the formula, artwork and packaging specification, with the longer window applying to new shell colours or printed bottles.

The MOQ for vitamin D3 softgels is 1,000 units per SKU for retail-ready bottles, and lower for pilot runs where the buyer accepts bulk packaging. Orders above 50,000 units are scheduled on a dedicated line slot to protect the lead time. Production capacity for D3 softgels is shared across the softgel line, so the booking is confirmed once the deposit is received. Payment terms are typically 30% deposit with the balance against the pre-shipment inspection report. Buyers with a rolling forecast can reserve capacity for 3 to 6 months.

Shipping is quoted on EXW, FOB or DDP terms. Air freight from Guangdong to the US or EU takes 5 to 8 days door to door and suits orders under 500 kg or launches with a tight retail date. Sea freight takes 25 to 35 days to the US west coast or 30 to 40 days to Northern Europe, and is the default for full pallets. Documents provided with each shipment include the commercial invoice, packing list, bill of lading or air waybill, batch COA, MSDS and, where the destination requires it, a free-sale certificate and a phytosanitary certificate for plant-derived shell or carrier materials. DDP quotes include duties and destination charges, with the buyer's importer of record confirmed before booking.