How to Choose Dietary Supplements Scientifically

Supplements are not miracle cures. Used correctly, they can complement your health; used incorrectly, they are a waste of money and may even cause harm.

Step 1: Assess Your Personal Needs

Do not follow trends blindly. Ask yourself: Why do I need this product? Am I truly deficient in this nutrient? It is best to confirm your nutritional status through clinical tests first.

Step 2: Check the Approval Number

Legal supplements must have an approval number:

• Guo Shi Jian Zi (State Food Health Approval, format: G + 4-digit year + 4-digit serial number)

• Wei Shi Jian Zi (approved before 2003)You can verify authenticity on the official website of the State Administration for Market Regulation.

Step 3: Examine Ingredients and Dosage

Check whether the content of active ingredients is appropriate and whether unnecessary excipients are added. Excessive intake of certain ingredients can be toxic, such as vitamin A and vitamin D.

Step 4: Choose Reliable Brands

Select well-established, transparent brands. Avoid products with unknown sources or exaggerated claims.