OKLAHOMA CITY, OK – August 14, 2026 – Modern Endocrine, a functional endocrinology practice led by dual board-certified endocrinologist Dr. Cassie Smith, MD, has published patient education comparing intramuscular and intravenous glutathione administration. The guidance responds to a steady rise in patient questions about the two delivery routes and to the volume of unsourced claims circulating online about both.
Glutathione is the body’s principal intracellular antioxidant. Injectable preparations are compounded rather than manufactured as FDA-approved drug products, and Modern Endocrine’s guidance opens by stating that plainly. The practice’s position is that patients researching either delivery route are usually asking a more fundamental question about an unexplained symptom, and that the question deserves a workup before it deserves an injection.
Why the Delivery Question Keeps Coming Up
Two Routes, Two Different Absorption Curves
An intramuscular injection deposits glutathione into muscle tissue for gradual absorption, producing a lower peak concentration over a longer window. An intravenous infusion places it directly into circulation, producing an immediate peak that also clears quickly. Modern Endocrine’s guidance describes both curves without ranking them, noting that neither route has been shown to produce a superior clinical outcome for antioxidant support.
Sourcing and Supervision Are the Safety Story
Because compounded injectables are only as safe as the pharmacy preparing them and the clinician administering them, the practice’s guidance addresses product sourcing directly and advises against vials purchased online for self-administration. It states plainly that glutathione is not approved by the FDA for the treatment of any condition, describes the effects the practice actually sees, which are usually temporary pain, itching or redness at the injection site and occasional mild fatigue after an infusion, and notes the rarer toxicities that make a full history and current labs the starting point rather than a formality.
Education Ahead of Treatment
Modern Endocrine does not publish before-and-after galleries for glutathione, and the new guidance explains why photographic comparisons are among the least controlled forms of evidence in wellness medicine. Details of the practice’s glutathione services are available at https://www.modern-endocrine.com/glutathione/ and its infusion program is described at https://www.modern-endocrine.com/iv-therapy/.
About Modern Endocrine
Modern Endocrine is a functional endocrinology practice in Oklahoma City, Oklahoma, founded by Dr. Cassie Smith, MD, a dual board-certified endocrinologist. The practice combines conventional endocrine care with a functional, prevention-first approach across hormone health, metabolic health, and peptide therapy, serving patients in the Oklahoma City area and by telehealth. Its published patient education is informational and does not replace individualized medical advice.
Media Contact Modern Endocrine Oklahoma City, Oklahoma 405.286.1571 https://www.modern-endocrine.com/contact/
Media ContactCompany Name: Modern EndocrineContact Person: Media RelationsEmail: Send EmailPhone: 405-286-1571City: Oklahoma CityCountry: United StatesWebsite: https://www.modern-endocrine.com/
