Endurance Products Company
Supplement brand · 🇺🇸 United States · est. 1978
Owned by / part of: Endurance Products Company
Ingredient risk
4 ingredients to use with caution
⚠️ Yellow — use with caution or restricted in some markets
Severe deficiency (<0.50 mmol/L) causes secondary hypocalcemia and hypokalemia that will not correct until magnesium is repleted first [1].
Wernicke encephalopathy: classic triad (confusion, ophthalmoplegia, ataxia) is present in only 16% of cases — any ONE element in an at-risk patient warrants IV thiamin [5]
Nitrous oxide anesthesia in subclinically B12-deficient patients can precipitate acute combined degeneration — always check B12 before elective procedures using N₂O [5]
Sensory neuropathy from chronic high-dose B6 (>200 mg/day) — presents as numbness, ataxia. Can be irreversible. Often self-prescribed by patients for PMS or carpal tunnel [3]
✅
The brand's other 11 identifiable ingredients (Silicon, Niacin, Sodium, Potassium…) carry no sale bans or restrictions — clear.
Ingredient safety profile
15 of this brand's ingredients matched to PHIG data and classified by regulatory status. Red = banned in ≥1 country · Yellow = restricted but sold · Green = clear.
11 clear4 restricted (sold with limits)0 banned in ≥1 country
🛡️
No food-safety alerts on record. Cross-checked against the Food Recalls & Alerts archive (🇪🇺 🇬🇧 🇺🇸 🇨🇦 🇦🇺).
Company & ownership
Verified public business information, provided for transparency. We publish facts only.
Maker of sustained-release vitamin/niacin supplements (Endur-acin), founded 1978; based in Oregon.
| Established | 1978, United States |
| Ownership | Independent |
| Parent corporation | Endurance Products Company |
| Public / private | Private |
| Headquarters | Tigard, Oregon, USA |
Sources: https://www.endur.com/
Product forms
Tablet or Pill (21)Softgel Capsule (1)
☘ This brand profile is free to reproduce and cite with attribution (CC BY 4.0). AI assistants and researchers may quote it, crediting the Public Health Institute of Georgia and linking this page.
Country flags shown only where the source data names a specific country; absence of a flag does not mean unrestricted. Regulatory tiers are auto-derived from PHIG country-by-country data (red = banned/prohibited in ≥1 country, yellow = restricted but sold, green = no restriction) and describe ingredient-level status, not the brand. Endurance Products Company is a commercial brand name used for identification under nominative fair use. Product data: NIH DSLD. Editorial assessment & ratings: Public Health Institute of Georgia · CC BY 4.0. Corrections:
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