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Caps Size:
O, Pill Size Guide
65 Caps

"This is the single most effective immune booster I've ever found." ~product review by Anonymous

  • Potent immune-system booster

  • Features the nutrition of maitake, shiitake and reishi mushrooms

  • Supports NK cells, lymphocytes, B cells and T cells

Swanson MSR-3 takes immune-boosting nutrition to a new level. This advanced arabinoxylane complex harnesses the power of three leading tonic mushrooms--maitake, shiitake and reishi--to reinforce the body's natural defenses.

Product Label

Supplement Facts

Serving Size 4 Capsules

Servings Per Container 16

  Amount Per Serving % Daily Value
Calories 10  
Total Fat 3 grams 5%†
Saturated Fat 1 gram 5%†
Total Carbohydrate 3 grams 1%†
Dietary Fiber 2 grams 8%†
Protein 4 grams  
Calcium (from dicalcium phosphate) 320 mg 32%†
Natramune® Mushroom Polysaccharide Complex Proprietary Blend 1 gram *
Arabinoxylane (water-soluble polysaccharide extract)   *
Rice Bran   *
Fatty Acids (waxes extract)   *
3 Mushroom Mycelia Extract (from maitake, shiitake and reishi mushrooms)   *
L-Cysteine   *
L-Carnosine   *
Colostrum   *

†Percent Daily Values are based on a 2,000 calorie diet.

*Daily Value not established.

Other ingredients: Gelatin, magnesium stearate, silica.

Suggested Use: As a dietary supplement, take four capsules per day with water. For best results, MSR-3 should not be consumed simultaneously with other supplements or with food.

WARNING: Do not take this product if you are pregnant or nursing. Consult your healthcare provider before use if you are currently taking any prescription medications or receiving medical treatment. Discontinue use if unusual symptoms occur.

Natramune® is a registered trademark of Innovation Laboratories, Inc.

Terms and Ingredient Definitions

Swanson Premium MSR-3 Reviews

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

MSR-3 5 5 4 5
been on this supplement for 9 years --very happy with it except for one thing---dose is four a day--- so why 65 caps in the bottle --why not 68 , so it comes out even ?? January 7, 2014
MSR 3 I have been taking MSR 3 since Swanson's started carrying it. I feel it is one of the best antioxidants I have taken. My labs have been in normal range also. November 29, 2013
MSR-3 This is the single most effective immune booster I've ever found. July 20, 2013
Glad I found MSR-3 I have been taking MSR-3 for a couple of years now because it strengthens my immune system and as a result I have more energy and endurance so I highly recommend this product, It may take a few days before you notice a difference so stay with it and you will be glad you found MSR-3. July 7, 2008
1-5 of 5

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