Vitamin C (Ascorbic Acid): Dietary Supplement Ingredient and Regulations

General and Chemical Information

Vitamin C is a fundamental vitamin known in scientific literature as L-ascorbic acid, which is water-soluble and stands out for its antioxidant properties. Chemically, it is a hexose derivative with the molecular formula C6H8O6 and a molecular weight of 176.12 g/mol. This molecule, registered with PubChem CID 54670067, is used in the food and supplement industries in high purity (e.g., powder 100%). L-Ascorbic Acid is also used as an acidity regulator and preservative additive, while serving as the main active ingredient in dietary supplements.

Product Forms

Vitamin C can be added to dietary supplements in various salt and ester forms depending on stability and absorption properties. The main forms used are as follows:

• Ascorbic Acid (Powder 100%): The pure L-ascorbic acid form, which is the most commonly used.
• Sodium Ascorbate: A milder ascorbate form with reduced acidity.
• Calcium Ascorbate: Preferred for those with acid sensitivity due to its combination with calcium.
• Ascorbyl Palmitate: A fat-soluble form of Vitamin C, used in powder or solid forms.

Permissibility in Food

The legal basis for adding Vitamin C to foods is the document "Regulation on the Addition of Vitamins and Minerals to Foods" (GeneratePdf.pdf), published by the General Directorate of Food and Control of the Ministry of Agriculture and Forestry of the Republic of Turkey. In Annex 1 of this regulation, Vitamin C (Ascorbic Acid and its salts) is listed as YES. This indicates that manufacturers can use this vitamin in dietary supplements and fortified foods.

Daily Intake Dosage in Dietary Supplements

One of the most critical points to consider when formulating products in the dietary supplement sector is determining the daily intake dosages (RDA/ADI) of ingredients. In the current list of the "Document on Daily Intake Dosages in Food Supplements", no value is specified for Vitamin C. Manufacturers must act in accordance with the general provisions of the relevant regulation and current annexes.

Regulations and Restrictions

Before being placed on the market, dietary supplements must undergo an approval process under the "Instructions for Approval Procedures for Dietary Supplements". Compliance with the nutrition and health claims specified in the regulation is mandatory for product labeling and advertising. Ingredient amounts must be clearly defined in specification documents, and accurate information must be provided to consumers.