Vitamin D3 Drop Manufacturer for Global Supplement Brands

Our drop line fills 10–50 ml glass and PET bottles with calibrated droppers. Typical output is 30,000–50,000 bottles per day across two shifts, depending on fill volume and viscosity. We run amber glass for light-sensitive oils and clear PET for cost-sensitive retail. Dropper assemblies include graduated glass pipettes, push-button droppers and tamper-evident caps. Bottle, dropper, label and carton can be sourced through us or supplied by your team. For brands moving from a pilot to full launch, we hold the approved formula and artwork on file so repeat orders skip the development stage. Line changeovers are scheduled weekly, which keeps small and mid-size runs viable without long waits.

Fill accuracy matters in drops because the dose is the product. We check fill weight every 30 minutes during a run, with a target tolerance of ±3% on net content. Droppers are tested for drop volume consistency at the start and end of each batch. If your label claims 1,000 IU per drop, the batch record shows how that was verified. We can also fill into unit-dose sachets or spray bottles if your brand is testing adjacent formats. Those runs sit on a separate line and carry a higher MOQ because of setup time.

Vitamin D3 in drops is usually cholecalciferol from lanolin, dissolved in a carrier oil. The most common bases are MCT oil from coconut, sunflower oil, olive oil and fractionated coconut oil. MCT is popular for its neutral taste and stability; olive oil suits Mediterranean-positioned brands. We can also produce water-dispersible emulsions for brands that want to add D3 to beverages or use a dropper in water. Potency ranges from 400 IU to 4,000 IU per drop. Higher potencies need tighter mixing controls, and we will flag that during quoting. Natural flavour options include peppermint, citrus and unflavoured. We do not add sugar or artificial colours unless the formula calls for them.

Every formula is documented with a bill of materials, specification sheet and allergen statement. If you are combining D3 with vitamin K2, omega-3 or elderberry, we can blend in the same bottle, provided the ingredients are compatible in an oil base. Stability testing runs at 25°C and 40°C for 3–6 months to support a 24-month shelf life. We recommend a 12-month accelerated study before commercial launch. For organic claims, the D3 and carrier oil must both be certified organic; we source from approved suppliers and keep certificates on file. Vegan D3 from lichen is available at a higher raw material cost and typically adds 5–8 working days to lead time.

Each batch of vitamin D3 drops is tested for potency, fill weight, microbial limits and heavy metals. We retain samples for 24 months. Certificates of analysis are issued per batch and can be shared with your QA team before release. The plant is GMP-certified and holds ISO 22000 and HACCP. Halal certifications are available on lines that meet the relevant requirements, and we can provide supporting documentation for customs and retail onboarding. FDA-registered facility status applies where US-bound shipments require it. We do not claim FDA approval for any product; that is not how dietary supplement regulation works.

Shipping is arranged by air or sea from Shenzhen or Hong Kong. Typical air freight to the US or EU takes 5–8 days; sea freight takes 25–35 days. We provide commercial invoices, packing lists, certificates of origin and health certificates where needed. For Middle East markets, halal certificates and Arabic labelling support are available. MOQ for retail bottling is 1,000 units per SKU, with pilot runs from 500 units. If you are sourcing a vitamin D3 drop manufacturer for the first time, we can start with a paid sample order and a video walkthrough of the line before you commit to mass production.

Every vitamin D3 drop batch is tested at three points: incoming D3 raw material, bulk oil or emulsion before filling, and finished bottles from the line. Identity and potency are confirmed by HPLC against a certified reference standard, with a specification of 90.0 to 110.0 percent of label claim. Microbial testing covers total aerobic count, yeast and mould, E. coli, Salmonella and Staphylococcus aureus. Heavy metals (lead, arsenic, cadmium, mercury) are screened by ICP-MS, and peroxide value is checked on the oil base to confirm freshness.

A Certificate of Analysis is issued per batch and includes the product name, lot number, fill size, D3 source, potency result in IU per drop and IU per ml, microbial results, heavy metals, peroxide value, appearance and odour, plus the release date and QA signatory. Where a formula carries halal or organic status, the relevant certificate number is referenced on the COA. Disintegration testing is not applicable to liquid drops, so we report droplet weight uniformity and fill volume instead, which are the relevant performance measures for this format.

Retention samples are held for the full shelf life plus six months: two retail units per lot at 25°C/60% RH and two at 30°C/65% RH. Accelerated stability runs for three months at 40°C/75% RH support the initial shelf-life claim, followed by real-time data at 0, 3, 6, 12, 18 and 24 months. Potency loss is tracked at each interval; a drop format typically shows less than 10 percent loss over 24 months when the base oil and amber glass are correctly specified.

Batch records, testing data and retention samples are kept for five years and are available for audit by appointment. If a buyer needs third-party verification, we can send samples to an accredited external laboratory at cost, with results issued directly to the buyer. Documentation is provided in English as standard; other languages can be arranged for label and COA templates before production starts.

Standard retail packaging is an amber glass bottle with a dropper cap, available in 10 ml, 15 ml, 30 ml and 50 ml. For travel or sample packs we offer 5 ml and 10 ml HDPE bottles with tamper-evident droppers. Blister and stick-pack formats are not used for liquids, but single-use 1 ml sachets can be produced on a separate line for clinical or sample channels. Cartons are printed to buyer artwork with lot number and expiry date inkjet-coded on the base and on the bottle label.

For US-bound products, the label must carry the Supplement Facts panel with vitamin D3 declared in IU and micrograms per serving, the serving size in drops, other ingredients, allergen statement where applicable, and the manufacturer or distributor address. We can prepare print-ready label files from buyer copy, or work from buyer-supplied artwork with a pre-press check for font size, contrast and mandatory statements. EU labels require nutrition declaration per 100 ml and per serving, plus the name and address of the food business operator.

Lot and expiry coding follows buyer format, typically YYMMDD lot plus best-before date calculated from the stability protocol. Cartons are specified with dimensions, gross weight and ITF-14 barcode; pallets are 1,200 x 1,000 mm or 1,200 x 800 mm, shrink-wrapped and strapped, with a maximum height of 1.8 m for sea freight. Amazon FNSKU labels can be applied at unit level, and we can poly-bag and insert leaflets where the buyer requires retail-ready presentation.

Retail compliance support includes help with FDA facility registration references, label review against 21 CFR 101.36, and GS1 barcode verification. We do not provide legal sign-off, so buyers should have final artwork reviewed by their own regulatory consultant. Packaging samples are produced before mass production so that bottle, dropper, label and carton fit are confirmed in hand before the filling line is committed.

The sample timeline is 7 to 10 working days for a formula sample in stock packaging, or 12 to 15 working days if custom label and carton artwork are required. Sample costs are quoted per project and credited against the first mass-production order above 10,000 units. Mass production runs 20 to 35 working days after sample approval and deposit receipt, depending on fill size, dropper type and whether the label is buyer-supplied or produced in-house.

Air freight is typically 5 to 8 working days door to door for 100 kg to 500 kg shipments and is suitable for launch quantities. Sea freight takes 25 to 35 days to US and EU ports and is more economical above 500 kg or two pallets. We ship EXW, FOB Shenzhen or Hong Kong, and DDP for buyers who want a landed-cost price; DDP is available for the US, EU, UK, Australia and Canada, with duties and taxes quoted separately.

Documents provided with each shipment include the Certificate of Analysis, Material Safety Data Sheet, free-sale certificate, packing list, commercial invoice and bill of lading or air waybill. A phytosanitary certificate is not relevant to this product, but a health certificate can be issued where the destination country requires one. Certificates of origin can be arranged for buyers using preferential tariff schemes.

Order quantities below 1,000 units are handled as pilot runs from 500 units with a fixed setup charge. For repeat orders, we hold approved artwork and formula records so that reorders can move to production without a new sample round, typically shortening the production window by 5 to 7 working days.