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How Long Does Glutathione Stay In Your System?

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Glutathione

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  • Improves insulin sensitivity
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When beginning a medication or supplement, it is important to understand how long it will remain in your system. If a medication side effect occurs, knowing the half-life of a medication can help you determine how long the symptoms will last.

Glutathione, also referred to as GSH, is an antioxidant that occurs naturally in all body tissues. It is a tripeptide composed of glycine, cysteine, and glutamic acid. While your body can produce it, you can also consume its precursors or take a supplement to make up for any deficiencies. Fruits and vegetables and some meats are high in glutathione. It is important to note that the amount of glutathione consumed in your diet does not directly correlate with your systemic glutathione levels.2

Glutathione deficiencies are common as it can be depleted due to stress, pollutants, aging, and chronic diseases. To fill this void, many people turn to glutathione supplements.

How Long Does Glutathione Stay In Your System?

How long glutathione stays in your system depends on several factors, including how fast your body uses glutathione, the type of supplement you are taking, the part of the body tested, and the route of administration.

The length of time a drug or supplement stays in your system is determined by its half-life. A half-life for a medication is the time it takes for half of a medication or supplement to be metabolized. Depending on the source, the half-life of glutathione is estimated to be between 10 and 90 minutes.1

Depending on your glutathione dose and how it is administered, you can expect half the dose will remain about 90 minutes later. Medication breakdown continues at about the same rate until it is all metabolized.

Most studies investigating how long glutathione stays in your system measure it in the bloodstream or specific organs, like the liver. Glutathione seems to remain active in body cells for much longer, protecting them from oxidative stress.3

Foods that are rich in antioxidants

What Does Glutathione Do?

Glutathione has many benefits because it is a powerful antioxidant that can help protect your cells from threats such as:4

  • Dietary deficiencies
  • Sleep deprivation
  • Excessive alcohol consumption
  • Smoking
  • Environmental toxins, pollution, and radiation
  • Unhealthy dietary choices
  • Infections
  • Chronic stress
  • Chronic diseases
  • Excessive or prolonged physical activity
  • Help remove damaged cells
chemical formula for glutathione

What Are The Side Effects Of Taking Glutathione?

While glutathione is generally recognized as safe (GRAS), there is a potential for side effects to occur. Some possible side effects of glutathione injections may include the following:

  • Nausea and vomiting: Glutathione injections may cause stomach upset and vomiting.
  • Allergic reactions: If you are allergic to glutathione or any of its components, you may experience a rash, difficulty breathing, facial, throat, tongue, or lip swelling.
  • Blood clotting problems: Glutathione injections may interfere with blood clotting, which could increase the risk of bleeding and bruising. A long-term phase 4 study has not found an increased bleeding risk after using glutathione.
  • Rash or irritation at the injection site: Irritation from the medication or preservatives can cause injection site redness, pain, or swelling.
  • Kidney and liver problems: Taking large doses of glutathione may cause kidney or liver dysfunction.

Pregnancy and breastfeeding: Glutathione supplementation has not been well-studied for safety during pregnancy or while breastfeeding. Because its effects on fetal and infant development are unknown, it’s best to avoid use unless prescribed and monitored by a qualified healthcare provider.

Is Glutathione Right for You?
See if Glutathione is a fit for your immune, skin, or detox goals.
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What Conditions Are Treated With Glutathione?

Glutathione deficiency contributes to oxidative stress, which plays a role in several medical conditions. Glutathione is used to treat:

  • Aging
  • Neurodegenerative diseases
  • Liver diseases
  • Diabetes mellitus
  • Cystic fibrosis
  • AIDS
  • Heart attacks
  • Side effects from cancer treatment
  • Chronic obstructive lung disease
  • Asthma
  • Acute respiratory distress syndrome
  • High blood pressure
  • Increased cholesterol
  • Infertility
  • Lupus
  • Multiple sclerosis
  • Cataracts and glaucoma
Glutathione Infographic

What Happens When You Take Too Much Glutathione?

There is not a lot of research on glutathione doses and the effects of taking too high a dose or for stopping glutathione. Glutathione injections are generally recognized as safe (GRAS) so there is unlikely to be a significant effect. However, side effects and metabolism differ for each person. The safest course of action is to take glutathione as prescribed and call your doctor if you notice any side effects.

Conclusion

For individuals seeking effective treatments and wishing to enhance their antioxidant defenses, considering the option to buy glutathione injections could be a significant step towards replenishing this crucial antioxidant. Invigor Medical provides a range of medical products tailored to meet your health needs, offering a practical solution for those looking to mitigate symptoms and support overall wellness. For more information, visit Invigor Medical.

Glutathione

In Stock
As low as $155/Mo
  • Reduces the impact of aging on skin
  • Supports liver health
  • Improves insulin sensitivity
NAD+ Vial

From The Expert: Augustine Chinemerem Anadu, MBBCh

Glutathione, a natural antioxidant, has a short half-life of 10 to 90 minutes in the bloodstream, meaning half the dose is metabolized within this period. Factors such as dosage, administration method (e.g., oral vs. injection), and individual health can affect how long it remains active in tissues. Potential side effects include nausea (common, affecting 10-20% of users in studies), allergic reactions, and injection-site irritation. Consult a doctor before starting this medication. Stop use and seek immediate medical attention if severe symptoms, such as difficulty breathing, occur. Limited research exists on long-term effects, particularly during pregnancy.

Written by

Leann Poston M.D.
Leann Poston M.D.
Licensed Physician and Medical Content Reviewer
Dr. Leann Poston is a licensed physician in the state of Ohio who holds an M.B.A. and an M. Ed. She is a full-time medical communications writer and educator who writes and researches for Invigor Medical. Dr. Poston lives in the Midwest with her family. She enjoys traveling and hiking. She is an avid technology aficionado and loves trying new things.

Medically Reviewed By

Augustine Chinemerem Anadu, MBBCh
Augustine Chinemerem Anadu, MBBCh
Obstetrics & Gynecology / Medical Reviewer
Dr. Augustine Chinemerem Anadu is an OB-GYN resident at Nigerian Navy Reference Hospital, Calabar, with broad foundational training across internal medicine, pediatrics, surgery, and lab medicine; a co-editor of The Syringe who has also written sports content for Betzillion; and a researcher focused on mental health in diabetes, uniting rigorous scholarship with patient-centered care.
Medical Review Process
Every article on Invigor Medical is reviewed by licensed medical professionals to ensure accuracy, clarity, and clinical relevance. Our editorial team works closely with practitioners to verify that content reflects current research, guidelines, and best practices.
Disclaimer and Medical Information
The content provided in this article is for informational and educational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always consult with a licensed healthcare provider regarding any medical concerns, conditions, or treatments. Do not disregard medical advice or delay seeking it because of something you have read on InvigorMedical.com.

Invigor Medical does not offer emergency medical care. If you are experiencing a medical emergency, call 911 or go to the nearest emergency room immediately.

Medical treatments discussed on this site may not be appropriate for everyone. All medications require a prescription from a licensed healthcare provider following an appropriate telehealth consultation, and treatment decisions should be made on an individual basis.
Leann Poston M.D.
Leann Poston M.D.
Licensed Physician and Medical Content Reviewer
Dr. Leann Poston is a licensed physician in the state of Ohio who holds an M.B.A. and an M. Ed. She is a full-time medical communications writer and educator who writes and researches for Invigor Medical. Dr. Poston lives in the Midwest with her family. She enjoys traveling and hiking. She is an avid technology aficionado and loves trying new things.

Medication Disclaimer

Important Safety Information

Augustine Chinemerem Anadu, MBBCh
Augustine Chinemerem Anadu, MBBCh
Obstetrics & Gynecology / Medical Reviewer
Dr. Augustine Chinemerem Anadu is an OB-GYN resident at Nigerian Navy Reference Hospital, Calabar, with broad foundational training across internal medicine, pediatrics, surgery, and lab medicine; a co-editor of The Syringe who has also written sports content for Betzillion; and a researcher focused on mental health in diabetes, uniting rigorous scholarship with patient-centered care.