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LongevityJuly 22, 2026

Glutathione: A Guide to Antioxidant Therapy

Written by Harbor Health TeamMedical Content Team
Glutathione: A Guide to Antioxidant Therapy

Glutathione is often called the body's master antioxidant. It is produced in every cell and helps neutralize the oxidative stress that comes with age, stress, and everyday exposures. A physician-guided glutathione program aims to help restore it under medical oversight.

What glutathione is

Glutathione is a molecule your body makes naturally in every cell. Its best-known role is as a primary antioxidant, helping to neutralize free radicals and support your cells' own defenses against oxidative stress.

In a Harbor program, glutathione is prescription-only, compounded by licensed U.S. pharmacies, and dispensed only after a board-certified physician reviews your intake.

Why glutathione gets depleted

Levels of glutathione can be reduced by age, stress, and everyday environmental exposures. Because of its central antioxidant role, supporting glutathione is of interest as part of an overall wellness and healthy-aging approach. A program supports your levels under clinician guidance rather than promising a specific result.

Who considers glutathione

Glutathione programs are built for adults seeking clinician-guided antioxidant support for overall wellness and everyday resilience. A physician reviews your goals and health history and decides whether treatment is appropriate. If it is not the right fit, it is not prescribed.

What to expect

A program starts with a short online health questionnaire reviewed by a licensed physician. If appropriate, your medication ships to your door and is self-administered as a small subcutaneous injection at home, on a schedule your clinician sets.

Ongoing clinician access and check-ins are part of a complete program, so your plan can be reviewed and adjusted over time.

Safety and side effects

Glutathione is generally well tolerated. The most common effects are mild injection-site reactions such as redness or soreness; stomach upset is uncommon and allergic reactions are rare. A board-certified physician reviews your health history before prescribing, and a care team is available around the clock if anything feels off.

This article is for general education and is not medical advice. Sermorelin, NAD+, and glutathione are prescription-only and are dispensed only after a licensed clinician reviews your health history and decides the treatment is appropriate for you. Talk with a qualified clinician about your individual situation.