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Ultra NAC 500
Ultra NAC 500 - Image 2

Ultra NAC 500

(44 customer reviews)

$34.95 — or subscribe to save 10%

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Description

What Is NAC?

N-acetyl-L-cysteine, commonly known as NAC, is a stable supplemental form of the sulfur-containing amino acid L-cysteine. The body uses cysteine to produce glutathione, one of the most important antioxidants found inside your cells.

Glutathione helps protect cells from oxidative stress and supports normal immune function, liver function, cellular repair, and detoxification pathways. Demand for cysteine and glutathione may increase during periods of physical stress, inflammation, toxin exposure, poor dietary intake, and increased oxidative stress.

NAC also supports normal mucus consistency and clearance, making it an important nutrient for maintaining healthy respiratory function. Emerging research has also examined NAC’s role in supporting neurological health, mitochondrial function, neurotransmitter balance, and a healthy response to oxidative stress.

Each capsule of Ultra NAC 500 provides 500 mg of N-acetyl-L-cysteine in a gluten-free, grain-free formula.

NAC and Glutathione Production†

Glutathione is a three-amino-acid antioxidant made from cysteine, glutamate, and glycine. Of these three building blocks, cysteine is often the most limited. NAC provides a stable and absorbable source of cysteine that the body can use to produce and replenish glutathione.1-7

Glutathione is involved in hundreds of cellular processes. It helps:

  • Protect proteins, fats, and cellular structures from oxidative damage
  • Support normal liver detoxification pathways
  • Assist with the processing of metabolic waste products
  • Maintain healthy immune function
  • Support cellular repair and recovery
  • Regenerate other antioxidants

Although oral glutathione absorption can vary depending on the form used, NAC provides the body with cysteine, a key raw material needed for its own glutathione production.

Antioxidant and Cellular Detoxification Support†

NAC supports the glutathione antioxidant system, including the normal activity of enzymes such as glutathione peroxidase, glutathione reductase, and glutathione S-transferase. These enzymes help neutralize reactive compounds and support the normal processing and elimination of metabolic byproducts.9,10

By supporting glutathione production, NAC helps maintain the body’s natural defenses against oxidative stress while supporting normal phase II detoxification pathways in the liver.

NAC  supplies cysteine and supports the antioxidant systems the body naturally uses to process and eliminate unwanted compounds.

Respiratory Function and Mucus Clearance†

NAC contains sulfur-based compounds that help support normal mucus consistency. This can make mucus easier for the body to clear through its natural respiratory defenses.

Research has examined NAC for its ability to support:

  • Healthy mucus consistency and clearance
  • Normal airway function
  • Pulmonary antioxidant defenses
  • Respiratory function during increased oxidative stress
  • Long-term respiratory wellness

NAC is not intended to treat respiratory disease. Its role as a dietary supplement is to support the normal antioxidant and mucus-clearing mechanisms already present in the respiratory system.

Neurological and Emotional Wellness†

The brain uses large amounts of energy and is particularly vulnerable to oxidative stress. NAC supports neurological health by supplying cysteine for glutathione production and helping maintain normal antioxidant defenses within nervous system tissues.

Research has also explored NAC’s influence on pathways involved in:

  • Neurotransmitter balance
  • Mitochondrial function
  • Cellular antioxidant protection
  • Normal inflammatory signaling
  • Neurological resilience during oxidative stress

These findings do not mean that NAC diagnoses or treats a neurological or psychiatric condition. They demonstrate that NAC participates in biological pathways that help support normal brain and nervous system function.

Why Choose Ultra NAC 500?

Ultra NAC 500 provides 500 mg dose of N-acetyl-L-cysteine per capsule.

The formula is:

  • Third-party tested for quality
  • Gluten-free
  • Made without grain-derived ingredients
  • Formulated with 500 mg of NAC per capsule
  • Produced in easy-to-use vegetable capsules
  • The same formula used by Dr. Osborne in his clinical nutrition practice

Ultra NAC 500 is designed for people who want a clean, precisely dosed source of NAC to support glutathione production, cellular antioxidant defenses, respiratory function, immune health, and normal liver detoxification pathways.†

For General Immune Support & Maintenance:
Take 1-2 capsule/per day on an empty stomach.

For More Intense Immune Support:
Take 3-4 capsules per day/divided doses on an empty stomach.

Suggested Serving: 1 or more capsules per day or as recommended by your health care professional.

Does Not Contain: Gluten, corn, yeast, artificial colors or flavors.

Cautions: If you are pregnant or nursing, consult your physician before taking this product.

†These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. If you are pregnant, nursing, taking medication, or have a medical condition, consult your physician before using this product.

nac info - Gluten Free Society

44 reviews for Ultra NAC 500

  1. . –

    Definitely seems as if it’s assisting with clearing my sinuses along with a true Gluten Free diet. Daily that spacey feeling is no longer and my wellness is being restored by my body! Thanks to Dr Osborne!!

  2. . –

    I have been using NAC for several years and it appears to have helped me and my immune system. Thanks Dr. Osborne

  3. . –

    NAC is my favorite immune supporter. Since I’ve been taking Nac I get less flu infections and if I get cold, using it speeds up my recovery. My husband and I love it.

  4. M B. –

    I have IPF and NAC eases my breathing. Prevention is a priority for me and I believe NAC is strengthening my immune system.

  5. Gail L. –

    I love this form of NAC because I know that it is high quality and always 100% gluten free! NAC helps complete my regimen for a strong immune system.

  6. Jenny M. –

    I am taking Ultra NAC to help lower B/P. I take Ultra NAC 500 first thing in the morning. I weigh myself, and take NAC on an empty stomach, with a full glass of water. Dress and get ready for the day. I sit and read for several minutes. Then check my B/P. It has been good. Used to be on a 180 mg dose of a med, MD decreased it to 120. Recently decreased it to 60mg. Hope to be off this med in the near future. I am very pleased with this supplement.

  7. Robert R. –

    Sinus issues gone

  8. Quieta B. –

    I love these products

  9. caitlin c. –

    I have more energy

  10. Marilyn M. –

    I have just started taking it. I can’t give a rating yet for I’ve had a viral infection plus upper respiratory problems for wks. My son told me to get this. I also am taking Virid, Detox C tabs, zinc, ultra q, ultra nutrition of your supplements. I’m also talking (calcium, vit B12 otc)and vit d rx. I have talked about calling tjere. I’m 77 with joint problems and lots of problems. I had cancer if small colon again this year. I’m always in pain and deal with it till I have to break over and take Tylenol and Ibuprofen together. Arthritis, osteoporosis in which I’m taking a monthly pill for that. Osteoarthritis, joint degenerative disease and have not been tested for all the arthritis diseases. I have been for osteoporosis I might need more help. My son and daughter in law got us started on the abive pills during Covid I can’t give a true rating.

  11. Nelda S. –

    I’ve been taking NAC since returning home from overseas with a bad chest cold.
    I first went to my dr and was prescribed a Z pack, but the remnants persisted. I heard NAC was especially helpful for mucus. I’ve been taking for several weeks and have lessened the symptoms. Works great!! I will take prior to and part of my regimen when traveling!

  12. KATHLEEN H. –

    I started taking NAC about 15 years ago, along with zinc, D & higher doses of C on a daily basis. I don’t get sick or colds/flu. I upped my doses during 2020 & despite taking care of friends that got CV19, I sailed through without any problems. I choose Ultra NAC because the quality & purity is proven. This is one supplement I will always take — it works.

  13. Deborah A. –

    I bought the NAC for my husband who was suffering from a lingering phlegm issue after having the Flu. It really has helped him a great deal. Another wonderful product from Dr. Osborne!

  14. Judith W. –

    I’ve been taking NAC for about 3 years. It was recommended by my doctor. I use Ultra NAC for its purity and quality. It’s the best!

  15. . –

    Excellent top quality supplements. Thank you Dr. Osborne.

  16. Marilyn M. –

    I have more energy. Only things slows me down is my joints in which is an everyday thing for years. I tried Turmeric and cannot take it. I get shots in my back and shoulder ( not often). I endure the pain the rest if the time. Never a day without it ☹️ I’m still new at NAC. I take the Ultra nutrient, zinc, Detox C, Quercetin, Virid annnnd. I need something great for spinal stenosis , osteoarthritis and etc

  17. Marcus C. –

    For years I have taken it to clear my sinuses at night so I can breathe when going back to sleep.

  18. Quieta B. –

    This has helped me so much with pain. Energy, sleep, allergies
    You name it

  19. Hadeel A. –

    Great product for immune support, I was getting sick often until I started taking this, along with other immune supporting supplements that Dr. Osborne recommends.

  20. Luigi P. –

    I’ve been using Dr. Osbourne NAC, and his other supplements since the scamdemic broke out, after learning how to boost my immunity from watching Dr.O teaching video. Ever since I no longer fall ill as I used to during flu season. Great Product!

  21. Quieta B. –

    Great product has helped me tremendously

  22. . –

    It seems to help clearing my mucus and such.I can’t explain it.I feel a heck of a lot better along with my gluten free diet .

  23. Ethylin W. –

    This product has helped with my lingering mucus issues. It cleared it up. I took a nutrition test and my glutathione level is low. I am supplementing and will redo my nutrition test at the end of the year.

  24. Lori K. –

    Great pure supplement! Very happy:)

  25. KYLENE A. –

    I received my results back from Dr Osborne’s Nutrients Test and I am 123% insufficient in Cysteine. I am very grateful that his vitamins/supplements are clean and free of fillers. I have been taking the NAC for a few months and I am slowly feeling stronger as I have had some strange autoimmune like symptoms . I am doing more testing now to see what is going on. I am very excited to start feeling better and I know NAC will be a big part of that journey.

  26. Dawn V. –

    This was a game changer for me. I was very sick with a respiratory bug & could not shake it. I was on so many supplements & on my 6th week of being sick. Not able to work or do my schooling. I ordered this (NAC ) and the day I received it in the mail, I immediately took it. Within hours of taking it I noticed I felt better. But I thought maybe I was hoping it helped? However I kept taking slightly higher doses & I kept getting better. I was back on my feet in a few days. I kept taking it since my body reacted so well to it. And it’s made a huge difference in my daily functioning.
    Very grateful for your safe supplements. Thank you! 🙏

  27. Terry L. –

    I take 2 every day for sinus. should be for sinus relief

  28. Quieta B. –

    Great product! Gives me so much energy!

  29. Quieta B. –

    Gives me energy in the mornings

  30. Evelyn Y. –

    NAC is really a game changer in my healing journey. I love Dr. Osborne’s products, but most of all I love his high standards and his passion to help people know the truth about their health.

  31. Judy B. –

    Only the best always No fillers
    Great quality product

  32. Quieta B. –

    Great for energy

  33. . –

    This is an essential suplement during the winter months. I give 1 capsule daily to my children ages 15 & 10 to avoid getting sick during the winter months. If they do get sick I use NAC as part of the immune protocol provided by Dr Osborne. You can read that here: https://www.glutenfreesociety.org/dr-osbornes-ultimate-immune-protocol/

  34. Sharon H. –

    I swear this is what keeps me away from the doctors! I’m a senior with no other meds. And giving great gratitude to the Ozone’s education! Clean energy….pun intended

  35. Jeff & Mickey P. –

    This is something I can’t do without. I started having trouble swallowing and was starting to think my thyroid nodules were back. I then realized I hadn’t had NAC in weeks. When I ordered it and started taking it again it was a game changer. I take it everyday first thing in the morning with my glutathione. It definitely helps with over production of my mucous.

  36. Debbie L. –

    I noticed when my husband didn’t get sick. And here I’m sick as a dog .Being sick for a whole month coughing and hacking . I don’t understand why he didn’t get what I had. Everyone on the block got it . But not my husband and the only difference is he was taking that NAC . So I started taking it. I didn’t get the next cold. Everybody else got. Neither did my husband. That’s why I take it. Debbie Lawrence

  37. Chris B. –

    My husband and I take this on a regular basis for our immune system. Wouldn’t be without it

  38. Avye L. –

    Great quality product, helps with my long covid.

  39. . –

    This is one of those things I keep in case of : it does wonders in combination with zinc and c and Q. Stresses I take low on sleep I take def immunity boost

  40. Michele D. –

    NAC is very helpful in my search for health. Thank you for making it available.

  41. Yong F. –

    My gut was absolutely destroyed by taking antibiotics dr. prescribed. Then I watched Dr. Osborne on youtube and followed his teaching.
    I have been taking his Omega max, Zinc, C, Multi, and NAC, B,… I became a doctor for myself. I am no longer suffering patient but recovering strong and happy each day. I totally trust Dr. Osborn and his products will help and save many people throughout years to come.

  42. . –

    This really helps my daughter from building up congestion in her lungs-a real-life saver for potential Pneumonia.

  43. Janet S. –

    Been taking Ultra NAC to support my immune system. Lots of research shows it is highly beneficial for overall support. Dr Osbourne has created supplements with the cleanest ingredients and I trust him and gluten free society with all of my supplemental needs! Thank you Dr. Osbourne!

  44. Blanca U. –

    After watching ur vid. on NAC I bought 2 bottles. At bedtime my sinuses plug-up and I have to breath open mouthed, 😜. On the second day taking the NAC my sinuses don’t plug up. Woohoo . Thank u for ur in-depth vid.’s. I like learning the chem. side of nutrients . 🐣

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