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Vitamin C Oral Liquid Supplement
DUOZI
10 Servings · Collagen Synthesis · Iron Absorption · Immunity Boost · Antioxidant · 30ml Sachets
As a leading manufacturer and trusted supplier of premium nutritional supplements, we present DUOZI Vitamin C Liquid – a high‑potency, fast‑absorbing formula designed to support your daily wellness needs. Each 30ml sachet delivers a powerful dose of Vitamin C, a vital nutrient that plays multiple essential roles in the body. This advanced liquid formula is specifically designed to promote collagen synthesis for healthy skin and joints, enhance iron absorption for energy and vitality, boost immunity to strengthen your body's natural defenses, and provide potent antioxidant protection against oxidative stress. The liquid format ensures rapid absorption and maximum bioavailability, allowing your body to utilize this essential nutrient more effectively than traditional tablets or powders. With 10 sachets per pack, it provides a convenient 10‑day supply – perfect for adults seeking comprehensive wellness support.
Promotes Collagen Synthesis
Vitamin C is an essential cofactor for collagen production – the structural protein that supports skin elasticity, joint health, and wound healing. Regular intake helps maintain youthful skin, strong connective tissues, and healthy blood vessels.
Enhances Iron Absorption
Vitamin C significantly increases the absorption of non‑heme iron from plant‑based foods, helping to prevent iron deficiency and support healthy red blood cell production – reducing fatigue and supporting energy levels.
Boosts Immunity
Vitamin C is essential for immune cell function, supporting the activity of white blood cells and natural killer cells. It helps strengthen the body's natural defenses, reduces the duration of common illnesses, and supports overall immune resilience.
Powerful Antioxidant Effect
Vitamin C is a potent antioxidant that neutralizes free radicals caused by UV exposure, pollution, and stress – protecting cells from oxidative damage and supporting healthy aging.
Our liquid formula is pre‑dissolved and ready for rapid absorption, bypassing the digestive breakdown required for tablets or capsules. Simply open a sachet and consume – no mixing required. The convenient 30ml sachets are perfect for on‑the‑go wellness.
Made with natural ingredients, free from artificial colors, preservatives, and unnecessary fillers – a pure, clean supplement you can trust for daily use.
Parameter | Specification |
|---|---|
Product Name | DUOZI Vitamin C Liquid |
Brand | DUOZI (OEM / Private Label Available) |
Net Content | 30ml × 10 sachets per pack |
Form | Ready‑to‑drink liquid |
Active Ingredients (per 30ml sachet) | Vitamin C (as ascorbic acid) – 1000mg; Natural berry flavor; Stevia extract |
Key Benefits | Supports collagen synthesis, enhances iron absorption, boosts immunity, provides antioxidant protection |
Flavor | Natural berry (OEM customizable) |
Allergen Info | Free from gluten, dairy, eggs, peanuts, tree nuts, soy – vegan |
Suitable For | Adults seeking immune, antioxidant, and overall wellness support |
Dosage | 1 sachet (30ml) daily – can be taken directly |
Shelf Life | 24 months from manufacturing date |
Storage | Store in a cool, dry place away from direct sunlight. Refrigerate after opening and consume within 24 hours. |
Country of Origin | Guangdong, China |
Ideal for individuals seeking to strengthen their body's natural defenses. Vitamin C supports a healthy immune response, especially during seasonal changes and high‑stress periods.
Supports collagen synthesis for radiant, youthful skin and healthy connective tissue – perfect for those looking to maintain skin elasticity and reduce signs of aging.
Enhances the absorption of iron from plant‑based foods, helping to prevent fatigue and support healthy red blood cell production – ideal for vegetarians, vegans, and active individuals.
Neutralizes free radicals, reducing oxidative stress and supporting long‑term cellular health – a valuable addition to any daily wellness routine.
High‑dose Vitamin C supports recovery after illness, helping to replenish nutrient stores and restore overall vitality.
Dosage: Consume 1 sachet (30ml) daily – can be taken directly or diluted with water, juice, or smoothie.
Timing: For best results, take in the morning on an empty stomach to maximize absorption, or as directed by a healthcare professional.
Consistency: Use daily for at least 2‑3 months to allow for cumulative immune and antioxidant benefits.
Storage: Keep unopened sachets in a cool, dry place away from sunlight. Once opened, refrigerate and consume within 24 hours.
Precautions: If you are pregnant, nursing, have a medical condition (especially kidney issues), or are taking medications, consult your healthcare professional before use.
Keep out of reach of children. This product is a dietary supplement and is not a substitute for a varied diet.
Liquid Manufacturing Process Walkthrough
Please refer to the attached video for a behind‑the‑scenes look at our liquid production – from raw material blending, homogenization, and sachet filling to final quality control.
At DUOZI, we take pride in our state‑of‑the‑art manufacturing facilities and rigorous quality control processes. Every batch of our Vitamin C Liquid is produced in accordance with the highest industry standards to ensure safety, purity, and potency.
Our GMP‑certified facility is equipped with advanced liquid blending, homogenization, and aseptic filling technology – ensuring consistent quality and maximum nutrient preservation in every sachet. We maintain strict environmental controls to prevent contamination and guarantee product integrity.
Image: Production Facility
Image: Quality Control Lab
Our sachets are designed to protect the liquid formula from light and oxygen – ensuring stability and freshness from production to consumption. We offer flexible packaging options – from retail‑ready consumer packs to bulk wholesale solutions – all with custom labeling and branding services to match your market needs.
Image: Packaging Line
️ Image: Custom Labeling
Every batch undergoes comprehensive testing for Vitamin C potency, heavy metals, microbial contaminants, and stability. We provide full traceability from raw material sourcing to finished product – ensuring that every sachet meets the highest standards of quality and safety.
Image: Quality Assurance Process
We always focus on customers, pay attention to their needs, provide high-quality products and excellent services to meet their expectations.
As an experienced OEM/ODM manufacturer, we understand what our B2B partners value most – and we deliver on every front.
Every batch is tested for Vitamin C potency, heavy metals, microbial contamination, and stability – ensuring safety and efficacy.
Our precision blending and aseptic filling processes ensure uniform distribution of all active ingredients in every sachet – from small pilot runs to large‑scale commercial production.
Key ingredients are backed by clinical research for immune support, antioxidant protection, and collagen synthesis – formulated for real results.
We source high‑grade Vitamin C from certified suppliers with full traceability – ensuring clean, non‑GMO ingredients.
We offer private label and custom formulation services – choose your Vitamin C dosage, flavor, sachet size, and packaging to create a unique product for your brand.
1. How does Vitamin C support collagen synthesis?
Vitamin C is a required cofactor for the enzymes that stabilize and cross‑link collagen molecules. Without adequate Vitamin C, collagen synthesis is impaired – leading to weaker skin, joints, and connective tissues.
2. How does it enhance iron absorption?
Vitamin C reduces ferric iron (Fe⊃3;⁺) to ferrous iron (Fe⊃2;⁺), the more soluble and absorbable form. This significantly increases the uptake of non‑heme iron from plant‑based foods, helping to prevent iron deficiency and fatigue.
3. How does it boost immunity?
Vitamin C supports the production and function of immune cells, including white blood cells and antibodies. It also acts as an antioxidant, protecting immune cells from oxidative damage – helping the body defend against pathogens more effectively.
4. Is this product sugar‑free and natural?
Yes. Sweetened with stevia, it contains zero added sugar and no artificial colors or preservatives – 100% natural ingredients.
5. How long does one pack last?
Each pack contains 10 sachets (30ml each). At one sachet daily, it provides a 10‑day supply – perfect for a convenient wellness boost.
6. Can I customize this for my brand?
Absolutely. We offer full OEM/ODM services – customize the Vitamin C dosage, flavor, sachet size, and packaging to create a unique product for your brand.
DUOZI Vitamin C Liquid – Collagen · Immunity · Antioxidant · Iron Absorption – 10 Servings
