# DietarySupplementDB

> DietarySupplementDB is the most comprehensive science-based dietary supplement encyclopedia for the US market, covering 600+ supplements with peer-reviewed research citations, clinical dosage data, safety profiles, and drug interaction information. All content is written at medical/academic level and references FDA, NIH/ODS, and PubMed sources.

## About

DietarySupplementDB provides independent, unbiased information on dietary supplements for American consumers and healthcare professionals. We are not affiliated with supplement manufacturers and our content is not influenced by advertising.

- [About DietarySupplementDB](https://www.dietarysupplementdb.com/#about-us): Mission, independence, and science standards
- [Dietary Supplement Buying Guide](https://www.dietarysupplementdb.com/#buying-guide): How to choose safe, effective supplements

## Supplement Categories

- [Vitamins](https://www.dietarysupplementdb.com/vitamins): All essential vitamins A through K — dosage, benefits, deficiency, interactions
- [Minerals](https://www.dietarysupplementdb.com/minerals): Macro and trace minerals — calcium, magnesium, zinc, iron, and more
- [Amino Acids](https://www.dietarysupplementdb.com/amino-acids): Essential and non-essential amino acids — mechanisms, dosage, sports nutrition
- [Fatty Acids](https://www.dietarysupplementdb.com/fatty-acids): Omega-3, omega-6, and other lipid supplements
- [Nootropics](https://www.dietarysupplementdb.com/nootropics): Cognitive enhancers and brain supplements with clinical evidence
- [Adaptogens](https://www.dietarysupplementdb.com/adaptogens): Stress-modulating botanical supplements backed by research
- [Probiotics](https://www.dietarysupplementdb.com/probiotics): Probiotic and prebiotic supplements for gut microbiome health
- [Plant Extracts](https://www.dietarysupplementdb.com/plant-extracts): Evidence-based botanical and herbal extracts
- [Mushrooms](https://www.dietarysupplementdb.com/mushrooms): Functional and medicinal mushroom supplements
- [Antioxidants](https://www.dietarysupplementdb.com/antioxidants): Antioxidant compounds and free radical protection
- [Enzymes](https://www.dietarysupplementdb.com/enzymes): Digestive and systemic enzyme supplements
- [Proteins](https://www.dietarysupplementdb.com/proteins): Protein powders, collagen, and complete protein supplements
- [Fibers](https://www.dietarysupplementdb.com/fibers): Soluble and insoluble dietary fiber supplements

## Popular Supplements

- [Vitamin C (Ascorbic Acid)](https://www.dietarysupplementdb.com/vitamins/vitamin-c-ascorbic-acid): Complete guide — immune function, collagen, antioxidant protection, dosage 75-2000mg/day
- [Vitamin D3 (Cholecalciferol)](https://www.dietarysupplementdb.com/vitamins/vitamin-d3-cholecalciferol): Deficiency affects 40% of Americans — bone health, immune modulation, dosage
- [Magnesium Glycinate](https://www.dietarysupplementdb.com/minerals/magnesium-glycinate): Highest bioavailability magnesium form — sleep, stress, muscle function
- [Magnesium Citrate](https://www.dietarysupplementdb.com/minerals/magnesium-citrate): Widely used magnesium form — digestion, energy, nerve function
- [Vitamin K2 MK-7](https://www.dietarysupplementdb.com/vitamins/vitamin-k2-mk-7): Cardiovascular and bone health — carboxylation of osteocalcin and matrix Gla protein
- [Zinc Picolinate](https://www.dietarysupplementdb.com/minerals/zinc-picolinate): Immune support, testosterone, wound healing — most bioavailable zinc form
- [Vitamin B12 Methylcobalamin](https://www.dietarysupplementdb.com/vitamins/vitamin-b12-methylcobalamin): Active B12 form — neurological function, energy metabolism, vegan supplementation

## Key Information

- All supplement content includes: complete identification, history, chemistry, pharmacokinetics, mechanisms of action, clinical benefits with evidence levels (high/medium/low), scientific studies with PubMed citations, optimal dosage by goal, drug interactions, contraindications, and US market data
- Regulatory context: DSHEA 1994 framework, FDA classifications, NIH/ODS dietary reference intakes (DRI)
- Third-party certification guidance: USP, NSF International, ConsumerLab verification
- Content is reviewed and updated regularly with peer-reviewed literature from 2020 onward
- All information is for educational purposes only and does not constitute medical advice

## US Market Context

- US dietary supplement market: $50B+ annually (2024), growing 6-8% per year
- 75% of American adults take at least one supplement daily
- Regulated under DSHEA — FDA does not pre-approve supplements
- Top US retailers covered: Amazon, iHerb, Vitacost, Thorne, GNC, Whole Foods, CVS, Walgreens

## Contact

- [Contact](https://www.dietarysupplementdb.com/contact): Reach the DietarySupplementDB editorial team
- Website: https://www.dietarysupplementdb.com

## Optional

- [Privacy Policy](https://www.dietarysupplementdb.com/privacy): Data handling and privacy practices
- [Terms of Service](https://www.dietarysupplementdb.com/terms): Terms of use
- [Medical Disclaimer](https://www.dietarysupplementdb.com/medical-disclaimer): Full medical and liability disclaimer