Our Research Partners

Our Research Partners – Endurance Products Company

For almost 50 years, we’ve been collaborating with researchers at top universities and institutions in the United States and around the world to validate the efficacy, safety and therapeutic value of supplements that feature our innovative vegetable wax-matrix tablet technology.
Here is a summary of key research collaborations:

United States

Harvard University

  • In a pharmacokinetic study1 led by Helen Figge, PharmD, of the Department of Pharmacy, Brigham and Women's Hospital, Dr. Figge and colleagues found extended-release vegetable wax-matrix nicotinic acid exhibited the preferred pharmacokinetic profile to support optimal cholesterol and lipid metabolism.
  • In an open label trial2 led by J. D. Alderman, MD, of the Cardiovascular Division, Harvard-Thorndike Laboratory, Beth Israel Hospital, Dr. Alderman and colleagues found extended-release vegetable wax-matrix nicotinic acid supplementation for 11 months, on average, not only promoted optimal LDL and HDL cholesterol balance, but also exhibited excellent tolerance with only a 4% dropout rate (4 out of 101 participants).
  • In a controlled clinical trial3 led by R. C. Pasternak, MD, Cardiovascular Division, Harvard-Thorndike Laboratory, Beth Israel Hospital, Dr. Pasternak and colleagues found extended-release vegetable wax-matrix nicotinic acidstrong> supplementation to be an effective complementary therapy to support heart health.

Oregon State University, Portland

  • In a systematic review4 of clinical trials and related studies led by Matthew K. Ito, PharmD, of the OHSU College of Pharmacy, Dr. Ito and colleagues found supplementing with extended-release vegetable wax-matrix nicotinic acid for up to 38 weeks is safe and promotes healthy cholesterol metabolism and blood lipid balance.

Texas Southern University, Houston

  • In a comparison study5 by Ivy Poon, PharmD, and colleagues at the College of Pharmacy and Health Sciences, typical extended-release niacin supplements were found to exhibit wide variability in their dissolutions rate (a measure nutrient bioavailability). Only extended-release vegetable wax-matrix nicotinic acid exhibited the preferred dissolution profile, underscoring the value of wax-matrix tablet delivery.

University of California, Irvine

  • In a controlled clinical trial (proof-of-concept)6 led by Joshua Grill, PhD, of the Department of Neurobiology and Behavior, University of California, Irvine, Dr. Grill and colleagues found sustained-release vegetable wax-matrix niacinamide offers potential brain benefits for older adults.

University of Iowa, Iowa City

  • In a controlled crossover clinical trial7 by Colin Gimblet, PhD, of the Department of Health and Human Physiology, Dr. Gimblet and colleagues found supplementing with sustained-release vegetable wax-matrix resveratrol supports endothelial health and blood vessel function in older adults.

University of Minnesota

  • In a 6-week controlled clinical trial8 by Joseph Keenan, MD, of the Department of Family Medicine and Department of Family Practice and Community Health, Dr. Keenan found extended-release vegetable wax-matrix nicotinic acid significantly improved blood lipid and cholesterol balance. By contrast, inositol hexanicotinate (“flush-free” niacin) had no impact at all.
  • In a 38-week controlled clinical trial9, Dr. Keenan and colleagues found long-term use of extended-release vegetable wax-matrix nicotinic acid was safe, well tolerated, and provided therapeutic value for supporting optimal LDL cholesterol metabolism with possible synergy with oat bran.
  • In one 8-week controlled, comparison trial10, Dr. Keenan and colleagues identified the most effective amounts of extended-release vegetable wax-matrix nicotinic acid to support healthy blood cholesterol metabolism with older adults experiencing the most benefits.
  • In a 20-week controlled clinical trial11, Dr. Keenan and colleagues found extended-release vegetable wax-matrix nicotinic acid was significantly more effective than a heart-healthy diet alone (American Heart Association Step I Diet) for supporting blood cholesterol balance.

University of Washington, Seattle

  • In a cost-comparison study12 led by C. Daniel Meyers, MD, of the School of Medicine), Dr. Meyers and colleagues compared common brands of niacin supplements. Extended-release vegetable wax-matrix nicotinic acid was found to be a cost-effective therapeutic option for cholesterol and lipid health while the more expensive “no-flush” inositol hexaniacinate products failed to contain any free nicotinic acid.

West Virginia University Medical School

  • In a mini-review13, Knox Van Dyke, PhD, of the Departments of Biochemistry and Molecular Pharmacology, outlines a multifactorial approach to supporting neurological health, including supplements featuring vegetable wax-matrix tablet technology.
  • In a mini-review14, Knox Van Dyke, PhD, describes the role of oxidative/nitrosative (O/N) stress in metabolism and the potential therapeutic value of supplements featuring vegetable wax-matrix tablet technology to help support metabolic health.

International

Ministry of Health of the Russian Federation & Affiliates

  • In one clinical trial15 by R.G. Oganov and colleagues, the researchers found supplementing with extended-release vegetable wax-matrix nicotinic acid for one year promotes cardiovascular health and is more effective when combined with exercise.
  • In one comparison study16 by G.S. Mal, the researcher found extended-release vegetable wax-matrix nicotinic acid promoted optimal blood lipid and cholesterol metabolism compared to diet alone.
  • In one 6-month controlled, crossover clinical trial17 by N. G. Kiseleva and colleagues, the researchers found supplementing with extended-release vegetable wax-matrix nicotinic acid promoted healthy LDL and HDL cholesterol metabolism.
  • In an open-label clinical trial18 by O. G. Smolenskaia and colleagues, the researchers found supplementing with extended-release vegetable wax-matrix nicotinic acid for 6 months promoted healthy lipid metabolism and cerebrovascular tone.
  • In a pharmacokinetic study19 by E. A. Ivanovskaya and colleagues, the researchers found tablets of extended-release vegetable wax-matrix nicotinic acid exhibited an intermediate release profile with a peak serum concentration of nicotinic acid achieved at approximately 6 hours and tablet dissolution occurring over 6-8 hours.
  • In an open-label clinical trial20 by V. V. Kukharchuk and colleagues, the researchers found supplementing with extended-release vegetable wax-matrix nicotinic acid for up to 2 years supported healthy cholesterol balance and vascular health.
  • In an open-label clinical trial21 by I. Ozerova and colleagues, the researchers found extended-release wax-matrix nicotinic acid promoted optimal blood lipid balance and cholesterol metabolism, including LDL and HDL cholesterol metabolism.
  • In a controlled, crossover clinical trial22 by D. M. Aronov and colleagues, the researchers found supplementing with extended-release vegetable wax-matrix nicotinic acid for 2 months provided therapeutic support for optimal total and LDL cholesterol metabolism with excellent compliance as shown by a low 4.5% dropout rate (4 out of 89 participants), primarily due to skin flushing or digestive upset.
  • In a 6-month controlled, crossover clinical trial23 by R. G. Oganov and colleagues, the researchers found supplementing with extended-release vegetable wax-matrix nicotinic acid was well tolerated and promoted both healthy lipid and lipoprotein (apo-A1 and apo-B) metabolism.

References

  • Figge HL, Figge J, Souney PF, et al. Comparison of excretion of nicotinuric acid after ingestion of two controlled release nicotinic acid preparations in man. J Clin Pharmacol. 1988;28(12):1136-1140. doi:10.1002/j.1552-4604.1988.tb05731.x
  • Alderman JD, Pasternak RC, Sacks FM, Smith HS, Monrad ES, Grossman W. Effect of a modified, well-tolerated niacin regimen on serum total cholesterol, high density lipoprotein cholesterol and the cholesterol to high density lipoprotein ratio. Am J Cardiol. 1989;64(12):725-729. doi:10.1016/0002-9149(89)90754-6
  • Pasternak RC, Brown LE, Stone PH, Silverman DI, Gibson CM, Sacks FM. Effect of combination therapy with lipid-reducing drugs in patients with coronary heart disease and "normal" cholesterol levels: a randomized, placebo-controlled trial. Harvard Atherosclerosis Reversibility Project (HARP) Study Group. Ann Intern Med. 1996;125(7):529-540. doi:10.7326/0003-4819-125-7-199610010-00001
  • Dunatchik AP, Ito MK, Dujovne CA. A systematic review on evidence of the effectiveness and safety of a wax-matrix niacin formulation. J Clin Lipidol. 2012;6(2):121-131. doi:10.1016/j.jacl.2011.07.003
  • Poon IO, Chow DS, Liang D. Dissolution profiles of nonprescription extended-release niacin and inositol niacinate products. Am J Health Syst Pharm. 2006;63(21):2128-34. doi:10.2146/ajhp060089
  • Grill JD, Tam S, Thai G, et al. Phase 2A Proof-of-Concept Double-Blind, Randomized, Placebo-Controlled Trial of Nicotinamide in Early Alzheimer Disease. Neurology. 2025;104(1):e210152. doi:10.1212/WNL.0000000000210152
  • Gimblet CJ, Kruse NT, Geasland K, et al. Effect of resveratrol on endothelial function in patients with CKD and diabetes: a randomized controlled trial. Clin J Am Soc Nephrol. 2024;19(2):161-168. doi:10.2215/CJN.0000000000000337
  • Keenan JM. Wax-matrix extended-release niacin vs inositol hexanicotinate: a comparison of wax-matrix, extended-release niacin to inositol hexanicotinate "no-flush" niacin in persons with mild to moderate dyslipidemia. J Clin Lipidol. 2013;7(1):14-23. doi:10.1016/j.jacl.2012.10.004
  • Keenan JM, Wenz JB, Ripsin CM, Huang Z, McCaffrey DJ. A clinical trial of oat bran and niacin in the treatment of hyperlipidemia. J Fam Pract. 1992;34(3):313-319. https://pubmed.ncbi.nlm.nih.gov/1541958/
  • Keenan JM, Bae CY, Fontaine PL, et al. Treatment of hypercholesterolemia: comparison of younger versus older patients using wax-matrix sustained-release niacin. J Am Geriatr Soc. 1992;40(1):12-18. doi:10.1111/j.1532-5415.1992.tb01822.x
  • Keenan JM, Fontaine PL, Wenz JB, Myers S, Huang ZQ, Ripsin CM. Niacin revisited. A randomized, controlled trial of wax-matrix sustained-release niacin in hypercholesterolemia. Arch Intern Med. 1991;151(7):1424-1432. doi:10.1001/archinte.151.7.1424
  • Meyers CD, Carr MC, Park S, Brunzell JD. Varying cost and free nicotinic acid content in over-the-counter niacin preparations for dyslipidemia. Ann Intern Med. 2003;139(12):996-1002. doi:10.7326/0003-4819-139-12-200312160-00009
  • Van Dyke K. An improved prevention and treatment of Parkinson’s disease: a review considering recent findings in genetics with helpful treatments. Clin Res Hematol. 2018;1(1):1-7.14.
  • Van Dyke K. A more complete treatment of prediabetes (metabolic syndrome) and diabetes 1 and 2 for humans: a mini review. Clin Res Immunol. 2018;1(2):1-3. https://asclepiusopen.com/clinical-research-in-immunology/volume-2-issue-1/1.php
  • Oganov RG, Aronov DM, Krasnitskiĭ VB, et al. Exercise and nicotinic acid delayed action drug Enduracin: application in outpatient rehabilitation of patients with ischemic heart disease [in Russian; English abstract]. Ter Arkh. 2004;76(4):54-59. https://pubmed.ncbi.nlm.nih.gov/15174324/
  • Mal' GS. Comparative efficiency of prolonged diet and drug therapies for hyperlipidemias in patients with ischemic heart disease [in Russian; English abstract]. Klin Med (Mosk). 2004;82(5):63-66. https://pubmed.ncbi.nlm.nih.gov/15230046/
  • Kisseleva NG, Olferiev A, Oganov R. Specific lipid response to wax-matrix sustained-release niacin treatment in patients with hypercholesterolemia. Atherosclerosis. 1999;144S1:S23. doi:10.1016/S0021-9150(99)80085-9
  • Smolenskaia OG, Kazakov IaE, Barats SS. Lipid and non-lipid effects of enduracin in patients with arterial hypertension [in Russian; English abstract]. Ter Arkh. 1999;71(8):23-27. https://pubmed.ncbi.nlm.nih.gov/10515030/
  • Ivanovskaya EA, Kolomin EY, Karpov RS. Quantitative determination of enduracin in blood serum [in Russian; English abstract]. Pharm Chem J. 1998;32:277-278. https://doi.org/10.1007/BF02471892
  • Kukharchuk VV, Solov'ev EIu, Malyshev PP, Rozhkova TA, Semenova OA, Aronskaia EE. The effect of long-term Enduracin monotherapy on the clinical and biochemical status of patients with ischemic heart disease [in Russian; English abstract]. Ter Arkh. 1997;69(9):41-45. https://pubmed.ncbi.nlm.nih.gov/9411824/
  • Ozerova I, Kisseleva N, Olferiev A, Kolpakova G, Aronov D. Perova N. Effect of wax-matrix sustained-release niacin treatment on cholesterol esterification in plasma. Atherosclerosis. 1997;130S1:S31. Abstract 117. https://www.sciencedirect.com/science/article/abs/pii/S0021915097875417
  • Aronov DM, Keenan JM, Akhmedzhanov NM, Perova NV, Oganov RY, Kiseleva NY. Clinical trial of wax-matrix sustained-release niacin in a Russian population with hypercholesterolemia. Arch Fam Med. 1996;5(10):567-575. doi:10.1001/archfami.5.10.567
  • Oganov RG, Kiseleva NG, Aronov DM, et al. The use of Enduracin--a prolonged-action form of nicotinic acid--in correcting atherogenic dyslipidemias[in Russian; English abstract]. Kardiologiia. 1993;33(10):54-6. https://pubmed.ncbi.nlm.nih.gov/8139175/