Gwak Cheol-i's Fatigue improvement Articles
Expert information and articles — Gwak Cheol-i

Antioxidant Combo: Vitamin C Revives Vitamin E
Vitamin C and Vitamin E are both antioxidant vitamins, but they work at different locations and eliminate different types of free radicals. We've organized why you need to take both together and the mechanism by which vitamin C regenerates vitamin E, all explained simply from a pharmacist's perspective.
- Antioxidant
- Vitamin E
- Vitamin C
14946 min read
What Does a Pharmacist Look for When Choosing Vitamin C?
Vitamin C products are evaluated based on country of origin labeling, packaging method, and price per serving. A pharmacist has compiled vitamin C selection criteria, recommending checkpoints for raw material origin, GMP certification, liposome vs. extended-release differences, and excipient considerations all in one place.
- Antioxidant
- Vitamin C
15557 min read
Tired in the Information Flood, Wondering Which Vitamin C to Take? Here's Your Guide!
Packaging: PTP + aluminum pouch, Raw materials: country of origin, naturally derived (corn) extract, NON-GMO, Dosage: daily nutrient reference value % (divided doses, split tablets, tablet/powder form), secondary ingredients, additives and excipients, certification marks, and other selection criteria.
- Kwak Chul-yi
- Antioxidant
- Vitamin C
04616 min read
Everything You Need to Know About Vitamin C, an Essential Nutrient You Must Consume!
Vitamin C deficiency is common in modern people who struggle to maintain a balanced diet. It is susceptible to heat and moisture, making it easily destroyed during cooking, which makes it difficult to obtain through cooked foods. Additionally, as a water-soluble vitamin, it does not accumulate in the body and is excreted after a certain period of time, requiring consistent intake.
- Kwak Chul-yi
- Antioxidant
- Vitamin C
- Connective tissue
02085 min read