References and Source Library

Product and seller sources

1. Joint N-11 current offer and purchase page — Current seller route accessed through your affiliate link.
2. Zenith Labs — Joint N-11 product information and purchase route — Manufacturer/product route accessed through your affiliate link.

Commercial product links on this independent affiliate site use the affiliate purchase route rather than direct vendor URLs.

Regulatory and health sources

1. FDA — FDA 101: Dietary Supplements
2. NIAMS — Osteoarthritis
3. CDC — About Physical Activity and Arthritis
4. NCCIH — Turmeric: Usefulness and Safety
5. NCCIH — Ginger: Usefulness and Safety
6. NCCIH — Boswellia: Usefulness and Safety
7. NCCIH — Osteoarthritis: In Depth
8. PubMed — Systematic review of MSM/DMSO in osteoarthritis
9. PubMed — Black pepper/piperine and drug absorption
10. NIH ODS — Niacin: Health Professional Fact Sheet
11. PubMed — N-acetylcysteine and glutathione mechanisms
12. PubMed — Clinical efficacy and safety of tulsi in humans
13. PubMed — Rosmarinic acid biological activity review
14. FDA — Major food allergens
15. PubMed — Lecithins: properties and formulation review

Individual pages cite the sources most relevant to their specific claims.

Last updated September 11, 2026.