The short answer · Antioxidant capacity
Take ascorbic acid & selenomethionine for antioxidant capacity. This is the one to buy.
California Gold Nutrition, Defender 4, with Vitamin C, Vitamin D, Zinc & Selenium, 180 Veggie Capsules
4.7· 187,122 ratings· $0.07/serving
Ascorbic Acid 500 mg — inside the studied 500-1000 mg window
Of 12,649 products scored for Antioxidant capacity, California Gold Nutrition, Defender 4, with Vitamin C, Vitamin D, Zinc & Selenium, 180 Veggie Capsules ranks #1 with a DoseRank score of 94. Selenomethionine leads the evidence here, backed by Ascorbic Acid.
The form“Why Ascorbic Acid & Selenomethionine?”Evidence Moderate evidence
Selenomethionine leads the evidence here, backed by Ascorbic Acid.
- Ascorbic AcidThe pick
Moderate evidence · 500 mg
Pure vitamin C in its simplest acid form; effective and inexpensive, but can irritate the stomach at higher doses - buffered forms suit sensitive users.
- SelenomethionineThe pick
Strong evidence · 50 mcg
Selenium bound to methionine, the predominant natural dietary form; best-absorbed selenium supplement with efficient tissue retention, often used for thyroid and antioxidant enzyme support.
- Methylselenocysteine
Moderate evidence · 100 mcg
Organic selenium compound found in plants like garlic and broccoli; well absorbed and used to supply selenium with a wider safety margin than inorganic forms.
Questions
Frequently asked
California Gold Nutrition, Defender 4, with Vitamin C, Vitamin D, Zinc & Selenium, 180 Veggie Capsules ranks #1 for Antioxidant capacity with a DoseRank score of 94. The score blends clinical strength, evidence, dose fit, trust signals and value across 12,649 products scored for this outcome.
Selenomethionine leads the evidence here, backed by Ascorbic Acid.
2 of 2 dosed ingredients land in the studied range. Ascorbic Acid at 500 mg lands inside the studied 500-1000 mg window. DoseRank scores this product's dose fit at 67 out of 100.
California Gold Nutrition, Defender 4, with Vitamin C, Vitamin D, Zinc & Selenium, 180 Veggie Capsules works out at $0.07 per serving. $0.07 per serving — low price tier for this outcome. Nothing else in this ranking costs less per serving.
No. Retailer links may be affiliate links, but rankings and placement are never paid. Every product is scored by the same public model, and the ranking is recomputed from the underlying product data rather than edited by hand.