Is this the acetylated form of glutathione? Thank you.

NAC, as far a I know, along with glycine and glutamic acid are the building blocks of glutathione. Glutathione is not easily absorbed in a supplement, so NAC was recommended to me. Not many foods contain large amounts of cysteine (an amino acid), but many contain the others mentioned above. That's why I take NAC, so that my body can increase its production of glutathione. I am not a nutritionist, though, so you'll have to check elsewhere as well.

Is this plant/food base or a cheap synthetic version???

http://www.nowfoods.com/NAC-600-mg-100-Veg-Capsules.htm. Should not matter if it is made from plants, food, or chemicals. It is an amino acid in a very specific form. So long as the bottle has the NAC and not some crap, then you are good. It is GMP quality assured, which is the industry oversight group that supplements wanted to use over the FDA. So it should be NAC, I use it all the time.

Where, what country, are now nac manufactured?

My container, purchased @ Amazon Feb 08, 2015 says: "Manufactured by NOW FOODS395 S. Glen Ellyn Rd., Bloomingdale, IL 60108, USA. For more product information visit www.nowfoods.com/0086"I will purchase this product again from Amazon. Don Welton

why is jarrow nac better than now nac?

In my opinion neither is a quality product. NAC should have a distinct odor you notice as soon as you open the bottle - a rotten egg smell. Neither of them has this. There is not odor even if you open the capsule, and no rotten egg taste. Try Solgar.

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NOW Supplements, NAC (N-Acetyl Cysteine) 600 mg with Selenium, 100 Capsules

NOW Supplements, NAC (N-Acetyl Cysteine) 600 mg with Selenium, 100 Capsules

Product ID: 3695064

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Details

Brand
NOW Foods
Flavor
Unflavored
Primary Supplement Type
Selenium
Unit Count
100 Count
Item Form
Capsule
Item Weight
0.1 Kilograms

🌱Vegan, Non-GMO & allergen-free

⚛️Selenium boosts antioxidant power

🛡️600 mg NAC for cellular defense

Description

🛡️ Elevate your cellular health with science-backed antioxidant power!

TRUSTED HERITAGE - Family-owned USA brand since 1968, blending tradition with innovation
CLEAN CERTIFIED - Non-GMO, vegan, gluten-free, kosher, and allergen-free for peace of mind
GMP QUALITY ASSURANCE - NPA A-rated GMP certification guarantees premium manufacturing standards
DOUBLE DEFENSE FORMULA - 600 mg NAC paired with selenium for superior free radical protection
OXIDATIVE SAFETY TESTED - Black spots are natural oxidation, not contamination—lab-tested for your safety

NOW Supplements NAC 600 mg with Selenium delivers potent antioxidant support to protect cells from oxidative stress. This vegan, non-GMO formula is free from common allergens and manufactured under strict GMP-certified conditions in the USA by a trusted family-owned company since 1968. Lab-tested for safety, it ensures purity and efficacy in every capsule.

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