Mag O7 | GNC
Gluten Free Gluten Free
Vegan Vegan
Vegetarian Vegetarian
Gluten Free Gluten Free
Vegan Vegan
Vegetarian Vegetarian

Product Information



The Ultimate Oxygenating Digestive System Cleanser

Mag O7 is a gentle and fast acting oxygen cleanse that works overnight for most people. This unique combination gently softens unwanted buildup in the digestive tract while providing beneficial oxygen to the digestive system.*

Mag O7 may help people who are:
  • Experiencing slow and sluggish digestion
  • Struggling from common digestive irregularities
  • preparing for a lifestyle change or special event
This product is not intended to be used as a magnesium supplement.


Nutrition Facts
Serving Size  3 Capsule(s)
Servings Per Container  30

Amount Per Serving     % DV

Elemental Magnesium (From A Proprietary Blend of Ozonated Magnesium Oxides)  1035 mg   **
Elemental Potassium (from 261 mg of Potassium Citrate)  99 mg   **

** Daily Value (DV) not established.
Other Ingredients
Certified Organic Rice Flour, Citric Acid, Vegetable Capsules
Label (click image to enlarge)

How To Use

As a dietary supplement, take up to 5 capsules at bedtime with 8-12 oz of water, on an empty stomach for 7-10 days or until the desired cleanse has been attained. Decrease dose for maintenance. Daily dosage will vary depending on individual and intended purpose. Results may vary.
Exclusively Manufactured For: Nutritional Brands
1610 W. Whispering Wind Dr.
Phoenix, AZ 85085


4.7 / 5.0
46 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Best of the best..
Love MAG07.. number one gentle product to take.. no cramping and no side affects..
May 2, 2019
1 year ago
MagO7 ??????!!
I would recommend this product to anyone needing help with removing waste from their digestive system. Mag O7 really get the job done fast when you need a relief.
April 20, 2019
1 month ago
Great & gentle
Great product have purchased multiple times and so glad its at GNC
April 2, 2019
This works really well, it will clean you out!! Drink your water, I take it before bed time.
February 27, 2019
It works!!!!
It does what it says as long as you drink at least 8oz of water with it.
February 25, 2019
3 months ago
Works great...helps with digestion
January 15, 2019
5 months ago
Poor product.
It did not work at all for me, had to return it.
December 24, 2018
5 months ago
I love this Mag O7,because it’s natural and it doesn’t make you cramp...
December 23, 2018
5 months ago
Love it!!!
November 23, 2018
6 months ago
Cancel order
I want to cancel my monthly order
November 16, 2018
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 15 questions Browse 15 questions and 34 answers
Is it ok to take if I have diabetes?
A shopper on Aug 9, 2018
Can I give this to a 9 year old overweight girl?
Monica J on Aug 19, 2018
Can I take it while breastfeeding?
Florence on Apr 13, 2018
BEST ANSWER: I have taken it while breastfeeding and it didn’t have any effect on baby. Hope this helps
how long does it take to work?
A shopper on Mar 9, 2018
BEST ANSWER: It works overnight for me. Usually first thing in the morning.
When is a good time to take it in the evenings?
latishia M on Mar 6, 2018
BEST ANSWER: I normally take it after dinner or right before bed.
Is it safe to take every day for maintenance?
Lynn L on Mar 21, 2018
BEST ANSWER: I take it every day. I love how it works! It definitely cleanses well but not harsh! I haven’t had any side effects.
Does it really have to be taken only at bedtime or can it also be taken in the am in a empty stomach?
A shopper on Aug 29, 2018
BEST ANSWER: Take this at bedtime. If you eat after taking it will not work the way it should. After taking drink a good amount of water. Then it may wake you up and then drink some more water to get your stomach to move. If you take during the day... you could have a big💩 mess!
Is it a good product for detox?
Cindy J on Jul 23, 2018
Could I give this to a 6 year old?
A shopper on Apr 8, 2018
BEST ANSWER: Absolutely not
I work at night so is okay to take when I get off?
Sheanett M on Mar 10, 2018
BEST ANSWER: Yes....i work at night too...i take it before i lay down...usually starts working by the time i get up...y-8hrs
I noticed this has rice flour, does this have carbs? On Keto so am curious if I can take it.
Kobi C on Feb 18, 2019
BEST ANSWER: I take it while on the 10 days Green smoothie cleanse, so I believe it is ok to take while on keto
Is it a good complete detox for toxins also?
Amanda D on Oct 9, 2018
BEST ANSWER: Yes it is it keeps you regular drink plenty of water
How many do you take a night?
Shellie I on Jan 28, 2019
BEST ANSWER: Every person is different, answer is between 3-5. Try 3-4 one night, then maybe 5 the next time depending on how they worked before. It's very important to over-hydrate in order for these to work, and also to take them before bed on as empty a stomach as possible. So eat dinner early and then nothing else but water. Use the water rule of at least 2x your body weight in ounces for the day, and then extra that evening. I wouldn't plan on being too far from a bathroom until about Noon.
Can you give it to a two year old?
A shopper on Mar 5, 2018
BEST ANSWER: Absolutely not!
Can I take this while pregnant?
A shopper on May 1, 2019
BEST ANSWER: Very gentle on’s an easy flush, but taking 5capsules together U might want to ask your dr.,but honestly I don’t c no harm in it. No cramping, no side affects