Vitamins & Foundational Health
Vitamins, omega-3, vitamin D, and foundational health supplements for people who want to fill nutritional gaps and support long-term health alongside an active lifestyle.
What to Look For
- Form of nutrients: The form of a vitamin determines how well it is absorbed. Magnesium glycinate absorbs better than magnesium oxide; methylfolate is better than folic acid; vitamin D3 is more effective than D2. Check that a multivitamin uses bioavailable forms, not cheap synthetic versions.
- Dose relative to daily needs: More than 100% DV of water-soluble vitamins (B vitamins, vitamin C) is generally safe since excess is excreted. Fat-soluble vitamins (A, D, E, K) accumulate in the body — check that doses are in the safe range, especially vitamin A.
- Third-party testing: Supplements in the US are not FDA-approved before sale. Look for products verified by NSF, USP, or Informed Sport if quality assurance matters to you. At minimum, look for GMP-certified manufacturing.
Frequently Asked Questions
What is the difference between a multivitamin and single-ingredient vitamins?
Multivitamins cover a broad range of nutrients in one product but typically at lower doses per nutrient. Single-ingredient supplements let you target specific deficiencies at higher doses. For general coverage, a high-quality multi works well. For confirmed deficiencies, a targeted single-ingredient product is more effective.
Do athletes need more vitamins than non-athletes?
In some cases, yes. High-intensity training increases the turnover of B vitamins, magnesium, zinc, and iron. Athletes who sweat heavily or follow calorie-restricted diets are most at risk for micronutrient shortfalls. A blood panel is the most accurate way to identify deficiencies.
What vitamins are most commonly deficient?
Vitamin D, magnesium, and omega-3 fatty acids are the most common deficiencies in the general population and among athletes. Vitamin D3 (especially for people with limited sun exposure), magnesium glycinate (for sleep, muscle function, and stress), and omega-3 fish oil (for inflammation and cardiovascular health) are the three most commonly recommended foundational supplements.