Custom Liquid Dietary Supplement Manufacturing
Liquid supplements can provide flexible dosing and an easier consumer experience for people who do not want tablets or capsules. They pose unique formulation and manufacturing challenges related to solubility, sedimentation, oxidation, flavor, viscosity, microbial control, container compatibility, and stability. Vici develops and manufactures liquid dietary supplements as solutions or suspensions.
Solution or Suspension?
Solutions
In a true solution, the relevant ingredients remain fully dissolved. This can create a visually uniform product and simplify dose delivery, but only if the target concentration is compatible with solvent system, pH, temperature, taste, and chemical stability. A solution formulation is easiest to develop and manufacture.
Suspensions
A suspension is appropriate when an ingredient cannot or should not be fully dissolved. The formulation must control settling, particle aggregation, caking, viscosity, pourability, and redispersion so the consumer can obtain a reasonably consistent dose after following the label directions.
Emulsions
Emulsions are complex dispersed systems that can offer unique benefits in ingredient solubility, protection, and delivery. Their formulation and manufacturing processes must be carefully designed to control droplet size, prevent separation or aggregation, and maintain stability throughout shelf life and use. Homogenization and high-shear mixing are techniques often used to manufacture emulsion formulations.
Ready to Get Started?
Send the target ingredients and doses, serving volume, flavor concept, package, expected shelf life, and anticipated batch volume.
Microbial Control and Preservation
Water-containing products require a scientifically justified microbial-control strategy. Depending on the formula and package, that strategy may involve pH, water activity, manufacturing controls, preservative selection, packaging, storage conditions, and consumer use.
Adding a preservative does not by itself prove adequate protection. When preservative efficacy must be demonstrated, the test program should be planned around the actual formulation and container. Vici can establish the formulation approach and coordinate appropriate microbiological or preservative-efficacy testing through qualified laboratories.
Critical Liquid Formulation Decisions
pH and Ingredient Compatibility
pH can affect solubility, flavor, preservative performance, color, and chemical stability. The acceptable range must be considered for the complete formula rather than optimized for a single ingredient.
Viscosity and Pourability
Viscosity can slow settling and improve mouthfeel, but too much structure may make the product difficult to mix, pump, fill, pour, or measure. Suspensions should be evaluated both at rest and after shaking.
Taste, Sweetness, and Aftertaste
A liquid exposes the full dose to the mouth. Bitter, metallic, botanical, acidic, or lingering notes may require a combined strategy using flavor, sweetness, pH, mouthfeel modifiers, and serving-volume decisions.
Oxidation, Light, and Headspace
Oxygen-sensitive or light-sensitive ingredients may require antioxidants, reduced oxygen exposure, appropriate processing, protective packaging, or controlled headspace. These choices should be supported by stability data.
Liquid Testing and Stability
- Appearance, color, odor, and evidence of precipitation or phase change
- pH and viscosity where these attributes control product performance
- Assay or marker content using a suitable method
- Net content or fill-volume checks when Vici performs filling
- Microbial quality and preservative-efficacy testing when appropriate
- Accelerated and long-term stability in the intended package
- In-use or open-container studies when consumer use may change product quality
Frequently Asked Questions
Can Vici fill and package liquid supplements?
Yes. Vici can fill liquid supplements into glass or plastic bottles in a variety of sizes, with or without droppers. Depending on the packaging configuration, we can also provide induction sealing or shrink wrapping.
Can Vici develop a liquid supplement from a product concept?
Yes. Vici can help select the appropriate liquid format, active and inactive ingredients, concentration, flavor system, microbial-control strategy, and packaging approach. Development considers consumer experience, dose delivery, stability, and manufacturability.
Can Vici manufacture an existing liquid formula?
Yes. We first evaluate the formula for solubility, ingredient compatibility, pH, viscosity, taste, physical stability, microbial risk, and manufacturing feasibility. If modifications are needed, we will discuss them before production.
Can Vici improve the taste of a liquid supplement?
Yes. We can optimize sweetness, flavor, acidity, bitterness, aftertaste, cooling sensation, aroma, and mouthfeel. The flavor system must be developed alongside the pH, active-ingredient concentration, preservative system, and other formulation requirements.
Does a liquid supplement require a preservative?
Not always. The need for a preservative depends on the water content, pH, water activity, ingredients, manufacturing process, packaging, storage conditions, and how the product will be used. Vici evaluates these factors when recommending an appropriate microbial-control strategy.
Can Vici develop emulsion supplements?
Yes. Vici can develop emulsion formulations for dietary supplements and pet supplements. These products require careful control of ingredient compatibility, droplet size, processing conditions, and physical stability throughout manufacturing and shelf life.
What testing may be required for a liquid supplement?
Testing depends on the formulation and product specifications but may include appearance, pH, viscosity, assay, microbial testing, preservative-effectiveness testing, heavy metals, physical stability, and accelerated or long-term stability studies.