Last update
5/19/2026
Reviewed By
Reviewed By
Overview
SCIENTIFIC SCORE
Questionable
Based on 1 Research
5
USERS' SCORE
Good
Based on 11 Reviews
8.2
Supplement Facts
Serving Size: 1 Veggie Capsule
Amount Per Serving
%DV
Selenium (from SelenoExcell® High Selenium Yeast) (Saccharomyces cerevisiae)
50 mcg
90%
Molybdenum (from molybdenum glycinate chelate)
50 mcg
110%
N-Acetylcysteine (NAC)
600 mg
†
Top Medical Research Studies
5
We examined the levels of selenium and key vitamins in patients suffering from obstructive sleep apnea (OSA) without additional health issues. Our study, involving 146 subjects split into different OSA severity levels, aimed to understand how these antioxidants might play a role in OSA's impact on health.
Interestingly, we found that higher concentrations of selenium and vitamin A appeared to bolster the body’s defense against OSA. Although our findings suggest potential benefits, it's important to note that antioxidants alone should not replace conventional treatments for OSA.
Interestingly, we found that higher concentrations of selenium and vitamin A appeared to bolster the body’s defense against OSA. Although our findings suggest potential benefits, it's important to note that antioxidants alone should not replace conventional treatments for OSA.
Read More
Most Useful Reviews
9
Easier breathing
11 people found this helpful
I have dealt with nasal discharge since childhood, leading to tonsil inflammation, which disrupted my sleep. A friend suggested NAC, and after taking it before bed, I finally could breathe properly and sleep again. I’m truly grateful and plan to keep using it.
Read More
9
Improved nasal clarity
4 people found this helpful
It's indispensable for us! Both my husband and I have suffered from clogged noses at night, but since using this product, we sleep like babies. My husband also had spring allergies, but since starting two capsules—one in the morning and another before bed—he no longer has issues. Highly recommended, and thanks to iherb for providing it.
Read More
7.5
Effective against fatigue
5 people found this helpful
I have been using this product for 2-3 years and have exchanged other supplements, but I will definitely repurchase this one. I find it very effective for hangovers, fatigue relief, and improving sleep quality.
Read More
Medical Researches
SCIENTIFIC SCORE
Questionable
Based on 1 Research
5
- All Researches
5
We examined the levels of selenium and key vitamins in patients suffering from obstructive sleep apnea (OSA) without additional health issues. Our study, involving 146 subjects split into different OSA severity levels, aimed to understand how these antioxidants might play a role in OSA's impact on health.
Interestingly, we found that higher concentrations of selenium and vitamin A appeared to bolster the body’s defense against OSA. Although our findings suggest potential benefits, it's important to note that antioxidants alone should not replace conventional treatments for OSA.
Interestingly, we found that higher concentrations of selenium and vitamin A appeared to bolster the body’s defense against OSA. Although our findings suggest potential benefits, it's important to note that antioxidants alone should not replace conventional treatments for OSA.
Read More
User Reviews
USERS' SCORE
Good
Based on 11 Reviews
8.2
- All Reviews
- Positive Reviews
- Negative Reviews
9
Easier breathing
11 people found this helpful
I have dealt with nasal discharge since childhood, leading to tonsil inflammation, which disrupted my sleep. A friend suggested NAC, and after taking it before bed, I finally could breathe properly and sleep again. I’m truly grateful and plan to keep using it.
Read More
9
Improved nasal clarity
4 people found this helpful
It's indispensable for us! Both my husband and I have suffered from clogged noses at night, but since using this product, we sleep like babies. My husband also had spring allergies, but since starting two capsules—one in the morning and another before bed—he no longer has issues. Highly recommended, and thanks to iherb for providing it.
Read More
7.5
Effective against fatigue
5 people found this helpful
I have been using this product for 2-3 years and have exchanged other supplements, but I will definitely repurchase this one. I find it very effective for hangovers, fatigue relief, and improving sleep quality.
Read More
7.5
Enhanced sleep quality
5 people found this helpful
I've taken this before but stopped for a while. Recently, I saw a discount and remembered to take two capsules each morning with collagen on an empty stomach. After just two weeks, my skin is much softer, and I find it easier to fall asleep with deeper sleep quality. Excellent ingredients and generous portions.
Read More
7.5
Enhanced sleep quality
1 people found this helpful
I consistently take this NAC detox tablet daily. It’s evident that taking NAC with glycine significantly enhances my sleep quality at night. Additionally, I noticed that combining these two supplements benefits sleep and has anti-aging effects. After some time on them, I feel so much better, particularly regarding detoxification, skin whitening, and sleep.
Read More
Frequently Asked Questions
7.5
Enhanced sleep quality
5 people found this helpful
I've taken this before but stopped for a while. Recently, I saw a discount and remembered to take two capsules each morning with collagen on an empty stomach. After just two weeks, my skin is much softer, and I find it easier to fall asleep with deeper sleep quality. Excellent ingredients and generous portions.
9
Easier breathing
11 people found this helpful
I have dealt with nasal discharge since childhood, leading to tonsil inflammation, which disrupted my sleep. A friend suggested NAC, and after taking it before bed, I finally could breathe properly and sleep again. I’m truly grateful and plan to keep using it.
9
Improved nasal clarity
4 people found this helpful
It's indispensable for us! Both my husband and I have suffered from clogged noses at night, but since using this product, we sleep like babies. My husband also had spring allergies, but since starting two capsules—one in the morning and another before bed—he no longer has issues. Highly recommended, and thanks to iherb for providing it.
7.5
Enhanced sleep quality
1 people found this helpful
I consistently take this NAC detox tablet daily. It’s evident that taking NAC with glycine significantly enhances my sleep quality at night. Additionally, I noticed that combining these two supplements benefits sleep and has anti-aging effects. After some time on them, I feel so much better, particularly regarding detoxification, skin whitening, and sleep.
7.5
Significantly improved sleep
2 people found this helpful
I regularly take this before bed since I often feel drowsy. After extended use, I observe that it significantly enhances my sleep quality. My family takes it too, as it’s easy to swallow thanks to its moderate size, helping alleviate tiredness.
5
We examined the levels of selenium and key vitamins in patients suffering from obstructive sleep apnea (OSA) without additional health issues. Our study, involving 146 subjects split into different OSA severity levels, aimed to understand how these antioxidants might play a role in OSA's impact on health.
Interestingly, we found that higher concentrations of selenium and vitamin A appeared to bolster the body’s defense against OSA. Although our findings suggest potential benefits, it's important to note that antioxidants alone should not replace conventional treatments for OSA.
Interestingly, we found that higher concentrations of selenium and vitamin A appeared to bolster the body’s defense against OSA. Although our findings suggest potential benefits, it's important to note that antioxidants alone should not replace conventional treatments for OSA.
References
- Saruhan E, Sertoglu E, Unal Y, Bek S, Kutlu G. The role of antioxidant vitamins and selenium in patients with obstructive sleep apnea. Sleep Breath. 2021;25:923. 10.1007/s11325-020-02207-w
