Sublingual Oral Spray Manufacturer for Fast-Acting Formulas

Our spray suite includes six inline filling and crimping lines. Each line handles 15–50 ml bottles with metered pump or actuator closures. Fill accuracy is ±1.5% by weight. We run alcohol-based, water-based, and oil-based formulas on separate circuits to avoid cross-contact. Changeover between SKUs takes 4–6 hours, including full flush and swab testing. For a 1,000-unit run, the line completes filling and crimping in a single shift. Larger orders of 50,000 units or more are scheduled across 3–5 days.

Pumps are sourced from two qualified suppliers and tested for shot size at 0.1 ml, 0.15 ml, and 0.2 ml. We validate dose uniformity across the first, middle, and last bottles of each batch. Leak testing runs at 100% inline. Bottles are then labelled, coded, and cartoned on the same floor. This reduces handling time and keeps lead times at 20–35 working days for mass production.

Sublingual formulas need a carrier that holds actives in solution and stays stable at room temperature. We work with purified water, glycerin, propylene glycol, ethanol, and medium-chain triglycerides. Typical actives include melatonin 1–5 mg per dose, vitamin B12 500–1,500 mcg, vitamin D3 1,000–5,000 IU, CBD isolate 5–50 mg, and herbal extracts such as valerian or ashwagandha. Each formula is adjusted for pH, viscosity, and osmolality to support mucosal contact.

Flavour systems cover peppermint, citrus, berry, and unflavoured. We use natural or nature-identical flavours and can mask bitter actives with stevia or monk fruit. Preservative options include potassium sorbate, sodium benzoate, and natural alternatives such as caprylyl glycol. For vegan claims, we source glycerin and plant-derived ethanol. Every formula is stability-tested for 24 months at 25°C/60% RH and 6 months at 40°C/75% RH.

The facility is GMP-certified and holds ISO 22000 and HACCP. We are FDA-registered for dietary supplements. Halal, and vegan certifications are available depending on ingredient sourcing. Each batch is tested for identity, potency, microbial limits, heavy metals, and residual solvents by an ISO 17025-accredited third-party lab. Certificates of analysis are issued before release. We retain samples for 24 months and keep batch records for 5 years.

For export, we prepare commercial invoices, packing lists, certificates of origin, and health certificates. Bottles ship in 5-ply corrugated cartons with dividers. A 20-foot container holds approximately 28,000 bottles of 30 ml. Air freight is available for urgent orders. Lead times from purchase order to departure are 20–35 working days for mass production, plus 3–5 days for documentation. We ship to the US, EU, UK, and Middle East from Shenzhen and Hong Kong ports.

Every batch of sublingual oral spray is tested at three points: incoming raw materials, in-process solution, and finished filled bottles. Identity testing by HPLC or GC confirms each active, while potency assays verify label claim within 95–105%. Microbial limits follow USP <61> and <62> with total aerobic count below 100 CFU/ml and absence of E. coli and Salmonella. Heavy metals are screened by ICP-MS against ICH Q3D limits, and we test for lead, cadmium, arsenic and mercury at sub-ppm levels. For sprays containing herbal extracts, we also run TLC fingerprinting to confirm botanical identity.

Disintegration testing is not applicable to liquid sprays, so we substitute spray-pattern and dose-uniformity checks. Each pump is primed and weighed to confirm 0.10–0.15 ml per actuation within ±10% across the batch. We retain samples from every lot for 24 months at 25°C/60% RH and 40°C/75% RH for accelerated stability. The stability protocol covers assay, pH, appearance, microbial count and pump function at 0, 3, 6, 12 and 24 months. A certificate of analysis (COA) accompanies each shipment and lists test parameters, specifications, results and release date.

Batch records are retained for five years and include raw material lot numbers, mixing times, fill weights, pump torque values and line clearance checks. If a deviation occurs, such as a fill volume outside ±2%, the batch is quarantined and a root-cause investigation is opened within 24 hours. Buyers receive a batch-specific COA and, on request, a copy of the executed batch record with confidential formulation details redacted. We do not release product without a signed quality release from the QA manager.

Sublingual oral sprays are filled into amber or clear PET bottles with crimped or screw-on pump assemblies. Standard bottle sizes are 10 ml, 15 ml, 20 ml, 30 ml and 50 ml, with pump output options of 0.10 ml or 0.15 ml per actuation. We also supply stick packs and single-use sachets for sample or travel formats, though these are less common for sublingual use. Bottles can be supplied with tamper-evident bands, child-resistant closures where required, and retail-ready cartons printed with lot and expiry coding via inkjet or laser.

For US-bound products, labels must include the supplement facts panel, serving size, amount per serving, percent daily value where applicable, other ingredients, and the manufacturer or distributor address. We verify that the label includes a lot code and expiry date in a legible format, and we can apply Amazon FNSKU barcodes or GS1-128 labels on request. Cartons are specified with 300–350 gsm board and are packed 12, 24 or 48 units per shipper. Pallet configurations are 1,200 x 1,000 mm or 1,200 x 800 mm, with stretch-wrap and edge protectors for export.

We do not design labels in-house, but we review artwork for regulatory elements before printing. Buyers should provide print-ready files at 300 dpi with bleed and dieline. Typical label approval takes 3–5 working days, and we can hold packaging components in our warehouse for up to 90 days without storage charges. For retail chains requiring specific pallet labels or SSCC codes, we apply these at no extra cost provided the specification is shared before production.

Sample development for a new sublingual oral spray typically takes 7–10 working days after receipt of the formula and target specifications. This includes bench mixing, fill into your chosen bottle, and basic organoleptic and pH checks. If a new flavour or active requires sourcing, add 5–7 days. Sample costs are quoted per project and are credited against the first mass production order. We provide a sample evaluation report with suggested adjustments before you commit to a production run.

Mass production runs 20–35 working days after sample approval and receipt of packaging components. The lower end applies to 1,000–10,000 units with standard bottles; the upper end applies to multi-SKU orders or custom pump assemblies. We offer EXW, FOB Shenzhen or Hong Kong, and DDP for most destination countries. Air freight takes 5–8 days door-to-door, while sea freight takes 25–35 days depending on port. For urgent launches, we can split shipments: air for the first 500 units and sea for the balance.

Documentation provided with each shipment includes COA, MSDS, free-sale certificate, and, for plant-based ingredients, phytosanitary certificates where required by the destination country. We also provide a packing list, commercial invoice and bill of lading. For halal claims, we supply the relevant certificate from our certifying body. Buyers are responsible for import permits and destination customs clearance, but we can recommend freight forwarders familiar with supplement imports.