Core Supplements Everyone Should Know About | I Want To Health You
💊 Core Supplements

The foundational supplements most people are missing

Before chasing condition-specific stacks, most people are deficient in a handful of core nutrients. These are the ones with the broadest evidence base — and the biggest impact across the board.

8Core Supplements
8Food Sources
100%Evidence-Based
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Core Supplements

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Vitamin D3 + K2
Over 70% of people are Vitamin D deficient. D3 regulates immunity, mood, bone health, and inflammation. K2 (MK-7) directs calcium to bones and away from arteries. These two work together and should always be taken together.
Typical dose: 2,000–5,000 IU D3 + 100mcg K2 (MK-7) daily with fat-containing meal
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Magnesium Glycinate
Involved in over 300 enzymatic reactions. Deficiency is extremely common and linked to poor sleep, anxiety, muscle cramps, inflammation, and cardiovascular disease. Glycinate is the best-absorbed and gentlest form.
Typical dose: 300–400mg magnesium glycinate daily, preferably at night
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Omega-3 Fish Oil (EPA/DHA)
The Western diet is severely omega-3 deficient. EPA and DHA reduce systemic inflammation, support brain health, cardiovascular function, and mood. One of the most impactful supplements with the broadest evidence base.
Typical dose: 1,000–2,000mg combined EPA+DHA daily with food
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Zinc
Essential for immune function, wound healing, testosterone production, and DAO enzyme activity. Deficiency is common — especially in vegetarians and people who eat a lot of grains that bind zinc absorption.
Typical dose: 15–30mg zinc picolinate or bisglycinate daily
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Iron (if deficient)
Iron deficiency is the most common nutritional deficiency globally, especially in women. Symptoms include fatigue, brain fog, and poor exercise tolerance. Always test before supplementing — excess iron is harmful.
Typical dose: Only supplement if blood test confirms deficiency. Typically 18–65mg elemental iron
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B-Complex (with Methylfolate)
B vitamins are essential for energy metabolism, neurotransmitter synthesis, and DNA repair. Look for methylated forms (methylfolate, methylcobalamin) — up to 40% of people have MTHFR variants that impair standard folic acid absorption.
Typical dose: 1 B-complex capsule daily with food
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Vitamin C (Buffered)
A potent antioxidant, immune booster, and collagen synthesizer. Buffered forms (calcium ascorbate, sodium ascorbate) are gentler on the stomach. Supports adrenal function, iron absorption, and histamine metabolism.
Typical dose: 500–1,000mg buffered Vitamin C daily
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Probiotics (Multi-Strain)
A diverse gut microbiome underpins nearly every aspect of health — from immunity to mood to inflammation. Look for multi-strain formulas with at least 10 different strains and 20+ billion CFU. Rotate brands periodically for diversity.
Typical dose: 20–50 billion CFU, multiple strains, taken with or after food
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Best Food Sources

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For informational purposes only. These recommendations are based on publicly available nutritional research and are not intended as medical advice. Always consult a qualified healthcare provider before starting any supplement regimen, especially if you have a medical condition or take medications.