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European Heart Journal Supplements

European Heart Journal Supplements

IF: 1.7
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Mineral oil: safety and use as placebo in REDUCE-IT and other clinical studies.

Published:6 October 2020 DOI: 10.1093/eurheartj/suaa117 PMID: 33061866
Brian Olshansky,?Mina K Chung,?Matthew J Budoff,?Sephy Philip,?Lixia Jiao,?Ralph T Doyle,?Christina Copland,?Alex Giaquinto,?Rebecca A Juliano,?Deepak L Bhatt

Abstract

Mineral oil is often used as a clinical trial placebo. Pharmaceutical-grade mineral oil consists of a mixture of saturated hydrocarbons, with a purity and chemical structure that differs substantially from food-grade or technical-/industrial-grade mineral oils. Interest in mineral oil was piqued by suggestions that a portion of the substantially positive results of the Reduction of Cardiovascular Events with Icosapent Ethyl-Intervention Trial (REDUCE-IT) might be attributable to the theoretical negative effects of mineral oil rather than being due to the clinical benefits of icosapent ethyl. The objective of this review was to explore possible mineral oil safety and efficacy effects and contextualize these findings in light of the REDUCE-IT conclusions. A literature search identified studies employing mineral oil placebos. Eighty studies were identified and relevant data extracted. Adverse events associated with mineral oil were generally gastrointestinal and consistent with use as a lubricant laxative. Changes in triglycerides, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, high-sensitivity C-reactive protein, and other biomarkers were inconsistent and generally not statistically significant, or clinically meaningful with mineral oil, as were changes in blood pressure. There was no consistent evidence that mineral oil in the amounts used in the REDUCE-IT or Effect of Vascepa on Progression of Coronary Atherosclerosis in Patients With Elevated Triglycerides on Statin Therapy (EVAPORATE) trials affects absorption of essential nutrients or drugs, including statins. These results were then considered alongside publicly available data from REDUCE-IT. Based on available evidence, mineral oil does not appear to impact medication absorption or efficacy, or related clinical outcomes, and, therefore, does not meaningfully affect study conclusions when used as a placebo at the quantities used in clinical trials.

Substances (2)

Related products
Procduct Name CAS Molecular Formula Supplier Price
Mineral oil 8042-47-5 N/A 392 suppliers $18.90-$2500.00
EPA 25378-27-2 C20H30O2 43 suppliers $29.00-$558.00

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