Vistra Bio Vitamin C 1000 mg — 30 Tablets
Bioavailable Vitamin C in a buffered ascorbate salt formula with a complex of natural bioflavonoids. Designed for maximum absorption of Vitamin C with minimal gastric irritation. Brand: Vistra, Thailand. Thai FDA Registration No.: 13-1-00449-5-0219.
Ingredients (per tablet)
- Ascorbic Acid (97%) — 409.792 mg (providing 397.498 mg of Vitamin C)
- Calcium Ascorbate Dihydrate (97%) — 374.339 mg
- Sodium Ascorbate (99%) — 340.867 mg (providing 300 mg of Vitamin C)
- Rosehip Extract (3% Vitamin C) — 62.500 mg
- Citrus Bioflavonoids (50%) — 50.000 mg
- Quercetin Dihydrate (95%) — 50.000 mg
- Orange Extract (90%) — 22.222 mg (providing 20 mg of Hesperidin)
- Acerola Cherry Extract (5% Vitamin C) — 12.500 mg
Total Vitamin C content: 1000 mg per tablet.
Allergen information: Contains soy. May contain traces of soy, sulfites, and gluten.
Formula Benefits
- Buffered form (ascorbate salts) — gentle on the stomach lining
- Citrus bioflavonoids and quercetin — enhance absorption and protect Vitamin C from oxidation
- Rosehip and acerola cherry extracts — natural sources of Vitamin C
- Hesperidin (Sophora japonica and orange extract) — supports capillary wall integrity
- Antioxidant protection of cells
- Supports collagen synthesis
Directions for Use
Take 1 tablet per day with a meal. Do not exceed the recommended daily dose.
Product Specifications
- Brand: Vistra
- Manufacturer: Vistra Co., Ltd., Thailand
- Country of Origin: Thailand
- Form: Tablets
- Count: 30 tablets
- Dosage: 1000 mg Vitamin C per tablet
- Product Type: Dietary Supplement
- Category: Vitamins / Immunity / Antioxidants
- Thai FDA Registration: 13-1-00449-5-0219
Storage
Store in a cool, dry place at 15–30 °C, away from direct sunlight. Keep out of reach of children. Shelf life: 3 years.
Frequently Asked Questions
How does Bio Vitamin C differ from regular Vitamin C?
The Vistra Bio Vitamin C formula uses three forms of ascorbate (ascorbic acid, calcium ascorbate, sodium ascorbate) instead of pure ascorbic acid alone. This reduces acidity and minimizes gastric irritation. The addition of bioflavonoids enhances bioavailability.
Can it be taken on an empty stomach?
It is recommended to take with a meal for optimal absorption and to reduce gastric load.
Does the product contain gluten?
The product may contain traces of gluten. Not recommended for individuals with celiac disease. Always check the current label for up-to-date allergen information.
Is it suitable for pregnant women?
Consult a healthcare professional before use during pregnancy or breastfeeding.
International Shipping from Thailand
Products on Decosthai are shipped directly from Thailand. Available shipping methods depend on destination country, product category and international shipping restrictions.
More information about international shipping methods and delivery options is available on the shipping information page.
Shipping Methods
- Thailand Post international airmail;
- ePacket for eligible parcels up to 2 kg;
- International Air Parcel;
- courier delivery for selected destinations.
Available shipping methods are automatically displayed during checkout.
International Delivery Process
- shipment preparation in Thailand;
- handover to the shipping carrier;
- international transportation;
- customs processing in the destination country;
- transfer to local delivery service;
- final delivery to the recipient.
Delivery Time
International delivery times depend on destination country, customs processing, airline restrictions, postal carrier workload and local logistics conditions.
Customs Information
International shipments may be subject to customs procedures in the destination country.
Depending on local regulations, customs authorities or logistics operators may request additional information required for customs clearance.
Import rules and customs procedures depend on the laws of the destination country.
International Returns
For Thailand Post shipments, international return to Thailand may be possible in some cases. However:
- return is not guaranteed;
- return conditions depend on destination country regulations;
- international return shipping may be expensive;
- delivery and return times may vary significantly.
Some international shipments may not be eligible for return after customs processing or transfer to local delivery services.
Recipient Responsibility
- provide correct shipping information;
- monitor shipment tracking updates;
- comply with local customs requirements;
- receive the parcel within carrier storage periods.
Shipping FAQ
Where are the products shipped from?
All products are shipped directly from Thailand.
Which shipping methods are available?
Available shipping methods depend on destination country and product category and are displayed during checkout.
Can customs request additional information?
Yes. Customs procedures depend on destination country regulations and local authorities may request additional information for customs clearance.
Is international return always possible?
International return availability depends on shipping method, destination country and carrier rules. In some cases return shipping may not be possible or may be expensive.
Does Decosthai ship internationally?
Yes. Decosthai ships products from Thailand to many countries worldwide.
Payment Information
Decosthai accepts payments for products shipped directly from Thailand. Available payment methods depend on the buyer’s country, selected shipping method and currently available international payment systems.
More information about available payment methods can be found on the payment information page.
Available Payment Methods
- international VISA and Mastercard cards;
- supported international payment gateways;
- international bank transfer;
- alternative payment services;
- payment methods coordinated with the store manager.
Available payment methods are automatically displayed during checkout.
International Card Payments
Customers can pay for orders using international bank cards when supported by the payment system available for their country.
During checkout, customers are redirected to a secure payment page to complete payment confirmation.
The online store does not store customer bank card information.
Thailand-Based International Shipping
Most international orders are shipped from Thailand using Thailand Post international delivery services.
- ePacket for eligible parcels;
- International Air Parcel;
- Thailand Post international airmail.
Customs and Payment Information
Payment confirmation may be used as proof of order value for customs clearance and international shipping procedures in the destination country.
Depending on local regulations, customs or logistics operators may request additional information related to international shipment processing.
Bank Transfers and Alternative Payment Methods
- international bank transfer;
- alternative payment services;
- manually confirmed payment methods coordinated with the store manager.
Important Information
All payments are processed through payment systems and financial partners available at the time of order placement.
International payment availability may change depending on banking regulations, payment provider restrictions and destination country limitations.
Refund Information
Refund availability depends on payment method, shipping status, order processing stage and international banking regulations.
Payment FAQ
Which payment methods are available?
Available payment methods are automatically displayed during checkout.
Can I pay with an international VISA or Mastercard?
Yes, if international card payments are available for your country and payment system.
Is payment secure?
Payments are processed through secure payment systems. The online store does not store customer bank card information.
Are products shipped internationally from Thailand?
Yes. Products are shipped directly from Thailand, primarily using Thailand Post international delivery services.
Can payment confirmation be required for customs?
Yes. In some countries, payment confirmation may be used during customs clearance procedures.
Are bank transfers available?
For selected orders and countries, international bank transfer may be available after coordination with the store manager.
Is refund always possible?
Refund availability depends on order status, shipping stage, payment system rules and international banking regulations.












