Bespoke liquid supplement and shot manufacturing

What we make as a liquid supplement manufacturer: types, bases and dose ranges

As a liquid supplement manufacturer, we develop and make drops, tinctures, oils, shots, oral sprays, squeeze pouches, tablet-plus-shot packs, liposomal liquids and ready-to-drink functional drinks for supplement brands, in-house at our Leicester facility. Whether you are launching private label liquid supplements or a bespoke formula, we take it from formula and specification to filling and assembly, at doses from micrograms per drop to grams per shot or pouch, and liquid food supplements sit inside our HACCP and GMP certification from BSI. Every product comes with its specification, a certificate of analysis for every batch and stability reports. Your formula is yours. Our formula ownership page explains how.

Liquids suit people who would rather not swallow a tablet, as gummy supplements do. They are one of the three fastest-growing supplement formats in the US, with powders and chewables: Nutrition Business Journal data put liquids at 12.7% of US supplement sales in 2025, with sales up 10% (Nutraceuticals World, March 2026).

Drops and tinctures

Drops suit actives dosed in micrograms. Vitamins D3 and K2 dissolve in a medium-chain triglyceride (MCT) oil base, while B12 and folate sit in water or glycerine. The nutrient reference value (NRV) on UK and EU labels is 5 µg for vitamin D and 2.5 µg for vitamin B12, so a few drops of a liquid vitamin can carry a full daily amount. Tinctures carry botanical extracts in alcohol, glycerine or a blend; glycerine bases give an alcohol-free option with a naturally sweet taste.

Shots

Single-serve shots carry milligram to gram doses in one swallow: electrolytes, collagen peptides, magnesium, vitamins, caffeine and botanicals such as ginger and turmeric.

Oral sprays

A spray pump delivers a small, metered volume, so sprays suit microgram actives such as B12 and vitamin D3. A claim that a spray absorbs faster than a tablet needs its own evidence, and we keep it off the label unless the data supports it.

Squeeze pouches and tablet-plus-shot packs

Spouted squeeze pouches hold gels and thicker liquids for sport and on-the-go use. Tablet-plus-shot packs pair a capsule or tablet with a liquid shot, so a brand can combine actives that cannot share one format, for example a probiotic capsule with a vitamin shot. The solid half comes from our capsule and tablet manufacturing work.

Liposomal liquids and functional drinks

Liposomal liquids carry actives such as vitamin C in phospholipid vesicles, formed by high-shear mixing and homogenisation, and we position them on absorption only where the data support it. Ready-to-drink functional drinks put a full serving of electrolytes, botanicals or caffeine into one bottle for energy, calm and hydration ranges.

Formulation science for liquids and shots

FDA's technical guide on water activity notes that most foods sit above a water activity of 0.95, enough for bacteria, yeasts and moulds to grow, and that Clostridium botulinum needs about 0.93 to grow (FDA Inspection Technical Guide 39). A water-based shot sits close to 1.0, so preservation comes from a stack of hurdles: pH, preservatives, heat, packaging and storage. Oils and high-glycerine bases hold little available water, so their main enemy is oxidation, not microbes.

pH and preservatives

Sorbic acid, benzoic acid and their salts (E 200 to 213) work in their undissociated acid form, so they need an acidic product. EU and GB additive rules allow them in liquid food supplements other than syrups up to a combined 2,000 mg per litre or kilogram, calculated as sorbic and benzoic acid. Clostridium botulinum does not grow at pH 4.6 or below, the line US rules use for acidified foods, so we design water-based shots well under it.

Reactions to design out

Benzoates and ascorbic acid together can form trace benzene, and heat and light speed the reaction (FDA questions and answers on benzene in beverages). A vitamin C shot therefore gets a sorbate system or another preservation route. Ascorbic acid also speeds the breakdown of vitamin B12 in solution, so the two need separate phases or a different format.

Oxidation, light and stability

Vitamin C and folate degrade in solution, and oils carrying vitamins A, D, E and K or omega-3s oxidise. We limit dissolved oxygen with nitrogen flushing, choose amber glass or light-blocking packs, add antioxidants such as mixed tocopherols to oils, and test the closure with the formula. Stability studies follow the conditions in the ICH Q1A(R2) guideline: real-time storage at 25°C and accelerated storage at 40°C, with the actives assayed at set points.

Overages and the label claim

Liquids lose actives faster than solids, so overages come from stability data, not habit. EU tolerance guidance expects a vitamin in a food supplement to measure between 20% below and 50% above the declared value throughout shelf life, with minerals at 20% below to 45% above, and accepts a higher upper tolerance for vitamin C in liquids. In the US, added nutrients must reach at least 100% of the declared amount. We set the overage so a product sold in both markets meets 100% at the end of shelf life and stays inside the EU upper tolerance at release.

Taste and texture

Minerals taste metallic, B vitamins and botanicals taste bitter, and a liquid gives them nowhere to hide. Our flavour and taste masking work balances sweeteners, acids and flavours at full dose. Fat-soluble actives in a water-based shot need an emulsion; insoluble minerals need a suspending gum and a "shake well" instruction.

Ingredients that work in this format

Ingredients that suit liquids dissolve or disperse fully, work in small volumes and survive the shelf life.

Some actives belong in other formats. Creatine slowly converts to creatinine in water, so it sits better in a powder supplement. Protein-level doses need more volume than a shot holds, and electrolyte mixes also travel well as stick packs and sachets. Oils such as omega-3, vitamin D and coenzyme Q10 also suit softgels, which we make in Leicester. Our supplement formats overview compares every option.

How it's made: a liquid supplement manufacturer's process, step by step

Our HACCP study for each product type, reviewed annually, sets the critical control points.

1. Approve and receive. Every material comes from a supplier approved before first use and reviewed each year, with its certificate of analysis checked against our specification.
2. Weigh and dispense. Each material is weighed against the batch record, under our allergen management plan with yellow colour coding.
3. Compound. Actives dissolve in a set order into water, glycerine or oil; we adjust pH, add the preservative system, homogenise emulsions and blanket oils with nitrogen, with in-process checks of pH, density, appearance and viscosity.
4. Filter and protect. Filtration removes particles. Where a formula needs a heat step, its time and temperature become a critical limit with a recorded check.
5. Fill and seal. We check fill volume, closure torque and tamper evidence, and flush the headspace with nitrogen for oxygen-sensitive oils.
6. Label and verify. Label verification on every batch is our critical control point, CCP-01: right label text, batch code and best-before date.
7. Retain and release. We keep three retained samples per batch for shelf life plus one year, and quality control releases the batch against its specification.

Every new liquid moves from bench samples to a pilot batch on production equipment before the first full run, so mixing order, heat steps, filtration and fill settings are proven at scale, and the pilot samples start the stability study. Between products, lines are cleaned and checked, with allergen changeovers run under our allergen management plan.

A full mock recall, forward and backward with mass balance, runs in seconds, and every non-conformance is closed with QA and Operations sign-off.

Testing and batch release

Every batch is tested by accredited partner laboratories (ISO/IEC 17025), and batch testing is part of every order. Quality control releases every batch against its specification, with certificates of analysis you can share with retailers and marketplaces. Our testing and batch release page explains each method.

With each product you receive its finished-product specification, a certificate of analysis for every batch, stability and challenge test reports, and allergen and dietary statements, ready for retailers, marketplaces and importers.

Our credentials: ISO 9001, HACCP and GMP certified by BSI, and FDA registered. BRCGS implementation under way, certification expected in early 2027. Our quality and accreditations page lists each certificate and its scope.

Packaging and presentation

The pack is part of the preservation system: amber glass protects light-sensitive vitamins, glass and PET give oils and vitamin C an oxygen barrier, and HDPE suits larger-volume liquids.

• Dropper bottles: amber glass with graduated pipettes for drops and tinctures.
• Shot bottles: glass or PET with tamper-evident caps; dispensing caps keep a powder or probiotic dry until opening.
• Spray bottles: metered pumps matched to the liquid's viscosity.
• Dual-format packs: a shot with a capsule or tablet in a cap compartment or blister.

Trial fills of the chosen pack go into the stability study, so we check for leaks, closure torque, dropper or pump delivery and any change in colour or taste with the formula inside. Every unit and outer case carries the batch code and best-before date, and cases are packed and palletised for your warehouse or fulfilment partners.

From 2030, packs sold in the EU must reach recyclability grade C or better and contact-sensitive PET packs need 30% recycled content, and UK extended producer responsibility fees are higher for poorly recyclable packs. Multi-layer pouches are hard to recycle, so we steer new products towards glass and mono-material PET or PP. In the US, supplements with 250 mg or more of elemental iron per pack need child-resistant packaging.

Labels and claims for the UK, EU and US

We prepare products and documents for the UK, the EU and the US; the rules below are as of October 2026.

United Kingdom

The Food Supplements (England) Regulations 2003, with matching rules across the UK, require the name "food supplement", the nutrient categories, the daily portion, a warning not to exceed it, a varied-diet statement and a warning to store the product out of reach of young children. Health claims must come from the GB register. Added caffeine brings set wording: a drink above 150 mg per litre states "High caffeine content. Not recommended for children or pregnant or breast-feeding women", while other foods with caffeine added for a physiological effect, food supplements included, state "Contains caffeine. Not recommended for children or pregnant women", with caffeine per daily portion on a supplement. We confirm which applies to each shot and position caffeinated shots for adults.

European Union

EU rules set the same core statements, and many member states require notification before sale. Labels need an EU-based food business operator or importer and each market's languages.

United States

A US label states "dietary supplement" and carries a Supplement Facts panel. Structure/function claims need substantiation, the mandatory FDA disclaimer and notification to FDA. Liquid iron products do not need the boxed US iron overdose warning, which covers solid forms such as tablets, capsules and gummies. We are an FDA registered food facility for dietary supplements, and we prepare the specifications and documents US retailers ask for.

Across markets, we use authorised claims only, with their conditions of use. "Vitamin D contributes to the maintenance of normal bones" and "Vitamin B12 contributes to the reduction of tiredness and fatigue" appear in both the GB and EU registers, and need the product to be at least a source of the vitamin, generally 15% of the NRV in the daily portion of a supplement. Tincture labels describe the botanical by species, plant part and extract, with authorised nutrient claims carrying the message, because botanical claims remain on hold in GB and the EU. When your liquid is ready to brief, Start your project.

References: Regulation (EC) No 1333/2008 on food additives (2008); Regulation (EU) No 1169/2011 (2011); Directive 2002/46/EC (2002); Regulation (EU) 2025/40 (2025); 21 CFR Parts 101 and 114 and 16 CFR 1700.14 (2026); FDA Inspection Technical Guide 39 (1984); European Commission guidance on nutrient tolerances (2012); ICH Q1A(R2) (2003).