Phytogen by Thorne Research

Phytogen by Thorne Research

Phytogen by Thorne Research

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A potent blend of four well-researched immune-supporting botanicals that benefit immune function*

Phytogen combines Echinacea, Coptis, Astragalus, and Schisandra in one formula that supports immune function in the respiratory tract, GI tract, and bladder.*


Because optimal immune function is an important part of long-term wellness, it is important to provide support during times of high stress, seasonal changes, and when you are not feeling your best. 

Your immune system is made up of cells, organs, and tissues that work together to protect your body from outside invaders. White blood cells, including natural killer (NK) cells and interferons all act as your body’s first line of defense. Supporting these vital components of your immune system can go a long way to keeping you healthy.

Thorne’s Phytogen is a unique 4-in-1 formula for an all-angle approach to optimal immune function.* It combines four well-researched immune-supporting botanicals that promote optimal immune function.*

Astragalus root benefits:

  • Promotes healthy immune function by supporting white blood cell function and the production of interferons.*
  • Promotes the natural production of white blood cells.*
  • Acts as an adaptogen to counteract the effect that stress has on the body, including the immune system.*

Echinacea root benefits:

  • Benefits immune function by supporting the normal activity of white blood cells and NK cells, and promotes the ability of other cells to respond to outside invaders.*
  • Promotes healthy and resilient mucus membranes.*

Coptis chinesis extract benefits:

  • Berberine in Coptis provides broad support for immune function.*
  • Helps maintain a healthy microbiome.*
  • Promotes healthy respiratory tract mucus membranes.*

Schisandra extract benefits:

  • Supports immune function in the respiratory tract.*
  • Has immune-modulating effects.*
  • Acts as an adaptogen to help mitigate fatigue and promote endurance.*


How to Use

Take 3 capsules two to three times daily or as recommended by your health professional.

Key Ingredients

Astragalus Extract, Coptis Extract, Echinacea, Schisandra Extract

Ingredient Amounts:

Serving Size: 3 Capsules
Servings Per Container: 20
Name Amount
Astragalus Extract 30mg
Coptis chinesis 110mg
Echinacea Root 450mg
Schisandra Extract 225mg
Other Ingredients: Hypromellose Capsule, Leucine, Microcrystalline Cellulose, Silicon Dioxide



This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients. 


If pregnant, nursing, or trying to conceive, do not use this product.


There are no known adverse interactions or contraindications at publication date.


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