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NOW Supplements Selenium
SCIENTIFIC SCORE
Moderately Effective
Based on 8 Researches
8
USERS' SCORE
Good
Based on 26 Reviews
8.5
Supplement Facts
Serving Size: 1 Tablet
Amount Per Serving
%DV
Selenium (elemental) (from 20 mg L-Selenomethionine)
100 mcg
182%

Top Medical Research Studies

8
Selenium aids heart recovery post-MI
Selenium-loaded porous silica nanospheres improve cardiac repair after myocardial infarction by enhancing antioxidant activity and mitophagy.
High relevance to heart health
This study focused on how selenium-loaded porous silica nanospheres (Se@PSN) could help repair the heart following a myocardial infarction (MI). These tiny particles are designed to neutralize harmful molecules called reactive oxygen species, which play a significant role in heart damage during MI.

We found that Se@PSN not only reduces cellular damage but also promotes the production of protective antioxidant proteins. By enhancing mitochondrial function, these nanospheres could potentially preserve heart function after an MI, demonstrating promising results for future treatments.
Read More
9
Selenium nanoparticles aid heart recovery
Mitigation of ischemia/reperfusion injury via selenium nanoparticles: Suppression of STAT1 to inhibit cardiomyocyte oxidative stress and inflammation.
High relevance to cardiovascular treatment
Our exploration focused on the potential of selenium nanoparticles (SeNPs) to reduce damage from ischemia/reperfusion injury, a common aftermath of heart attacks. We found that these SeNPs, introduced through intravenous injection, demonstrated powerful antioxidant and anti-inflammatory effects.

By disrupting a harmful cellular cycle, they protected heart cells and minimized inflammation. In tests, SeNPs not only improved heart function but also decreased cell death and tissue scarring. These findings suggest that selenium nanoparticles could be a valuable addition to heart attack treatments.
Read More
9
Selenium's promise in atherosclerosis treatment
Selenium-Doped Copper Formate Nanozymes with Antisenescence and Oxidative Stress Reduction for Atherosclerosis Treatment.
High relevance as a treatment strategy
We explored the potential of selenium-doped copper formate (Cuf-Se) nanozymes in treating atherosclerosis, a key contributor to cardiovascular diseases. By targeting inflammation and oxidative stress, Cuf-Se shows promise by reducing reactive oxygen species and preventing the formation of foam cells.

Although this study primarily tests the effectiveness in mice, findings indicate a notable reduction in plaque formation and inflammation. Cuf-Se led to a five-fold decrease in plaque area, highlighting its potential as a novel treatment strategy for atherosclerosis.
Read More

Most Useful Reviews

9.5
Reduces cardiovascular risk
Selenium is essential for the heart, immunity, and thyroid gland. It has an antioxidant effect, decreasing free radicals and minimising their harmful impact. This is particularly beneficial for individuals with poor habits, as it reduces the risk of cardiovascular disease. Selenium detoxifies heavy metals, lowers bad cholesterol, and combats oxidative stress and inflammation, providing protection against atherosclerosis and heart-related issues. A top-quality supplement that I highly recommend for overall health!
Read More
7.5
Boosts overall health
I have incorporated NOW Foods Selenium into my diet for extra health support, following my doctor’s advice, and the results have been gratifying. Selenium is crucial for a robust immune system, combating oxidative stress. After a few weeks, I felt more energetic and alert, without any stomach discomfort from the capsules. I appreciate the high quality and natural ingredients. I will continue using this product, as it significantly benefits my overall health.
Read More
9.5
Effective for recovery
My husband bought me selenium while I was unwell, and I found it significantly aids in fighting off viral diseases, allowing for quicker recovery. It has proved very effective for me, especially given its long-term cumulative benefits. I truly view selenium as a blessing for my health.
Read More

Medical Researches

SCIENTIFIC SCORE
Moderately Effective
Based on 8 Researches
8
  • All Researches
9
Selenium nanoparticles aid heart recovery
Mitigation of ischemia/reperfusion injury via selenium nanoparticles: Suppression of STAT1 to inhibit cardiomyocyte oxidative stress and inflammation.
High relevance to cardiovascular treatment
Our exploration focused on the potential of selenium nanoparticles (SeNPs) to reduce damage from ischemia/reperfusion injury, a common aftermath of heart attacks. We found that these SeNPs, introduced through intravenous injection, demonstrated powerful antioxidant and anti-inflammatory effects.

By disrupting a harmful cellular cycle, they protected heart cells and minimized inflammation. In tests, SeNPs not only improved heart function but also decreased cell death and tissue scarring. These findings suggest that selenium nanoparticles could be a valuable addition to heart attack treatments.
Read More
9
Selenium's promise in atherosclerosis treatment
Selenium-Doped Copper Formate Nanozymes with Antisenescence and Oxidative Stress Reduction for Atherosclerosis Treatment.
High relevance as a treatment strategy
We explored the potential of selenium-doped copper formate (Cuf-Se) nanozymes in treating atherosclerosis, a key contributor to cardiovascular diseases. By targeting inflammation and oxidative stress, Cuf-Se shows promise by reducing reactive oxygen species and preventing the formation of foam cells.

Although this study primarily tests the effectiveness in mice, findings indicate a notable reduction in plaque formation and inflammation. Cuf-Se led to a five-fold decrease in plaque area, highlighting its potential as a novel treatment strategy for atherosclerosis.
Read More
8
Dietary antioxidants reduce mortality risk
Association of independent dietary antioxidant intake, and CDAI level with risks of all-cause and cardiovascular-cause death among population with cardiovascular disease.
Highly relevant study on antioxidants
We evaluated how dietary antioxidants, including vitamins like C and E, affect mortality risks in individuals with cardiovascular disease (CVD). Our analysis incorporated data from nearly 1,400 participants, using advanced statistical models to determine the connections between antioxidant intake and death rates.

The findings showed that higher levels of dietary antioxidants correlate with a lower risk of dying from CVD. Specifically, those in the highest antioxidant consumption group had significantly reduced mortality risks compared to those with lower intake. This points to the potential benefits of increasing antioxidants in the diet for better health outcomes in those managing CVD.
Read More
8
Selenium aids heart recovery post-MI
Selenium-loaded porous silica nanospheres improve cardiac repair after myocardial infarction by enhancing antioxidant activity and mitophagy.
High relevance to heart health
This study focused on how selenium-loaded porous silica nanospheres (Se@PSN) could help repair the heart following a myocardial infarction (MI). These tiny particles are designed to neutralize harmful molecules called reactive oxygen species, which play a significant role in heart damage during MI.

We found that Se@PSN not only reduces cellular damage but also promotes the production of protective antioxidant proteins. By enhancing mitochondrial function, these nanospheres could potentially preserve heart function after an MI, demonstrating promising results for future treatments.
Read More
8
Selenium nanoparticles show heart benefits
Silica Nanoparticles Loaded With Selenium Quantum Dots Reduce Myocardial Ischemia-Reperfusion Injury by Alleviating Ferroptosis and Mitochondrial Dysfunction.
High relevance for cardiovascular treatment
We evaluated the use of selenium-quantum-dot-loaded silica nanoparticles as a new treatment for myocardial ischemia-reperfusion injury, a serious cardiovascular issue. These nanoparticles showed impressive abilities to scavenge harmful reactive oxygen species and improve heart cell function.

While traditional therapies struggle to target key problems like ferroptosis, the selenium nanoparticles effectively reduced this damage and preserved mitochondrial integrity. Our findings suggest that these nanoparticles could significantly lower heart damage and inflammation, bringing us closer to better treatment options for heart conditions.
Read More

User Reviews

USERS' SCORE
Good
Based on 26 Reviews
8.5
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9.5
Reduces cardiovascular risk
Selenium is essential for the heart, immunity, and thyroid gland. It has an antioxidant effect, decreasing free radicals and minimising their harmful impact. This is particularly beneficial for individuals with poor habits, as it reduces the risk of cardiovascular disease. Selenium detoxifies heavy metals, lowers bad cholesterol, and combats oxidative stress and inflammation, providing protection against atherosclerosis and heart-related issues. A top-quality supplement that I highly recommend for overall health!
Read More
7.5
Boosts overall health
I have incorporated NOW Foods Selenium into my diet for extra health support, following my doctor’s advice, and the results have been gratifying. Selenium is crucial for a robust immune system, combating oxidative stress. After a few weeks, I felt more energetic and alert, without any stomach discomfort from the capsules. I appreciate the high quality and natural ingredients. I will continue using this product, as it significantly benefits my overall health.
Read More
9.5
Effective for recovery
My husband bought me selenium while I was unwell, and I found it significantly aids in fighting off viral diseases, allowing for quicker recovery. It has proved very effective for me, especially given its long-term cumulative benefits. I truly view selenium as a blessing for my health.
Read More
8.8
Prevents aging
Selenium serves as a potent antioxidant, preventing premature ageing and significantly enhancing reproductive health in both genders, while also reducing the risk of cardiovascular disease.
8
Reduces neck swelling
I have a thyroid disease and take selenium, which I find essential. It alleviates the swelling in my neck efficiently. Although too much can cause side effects, I find that a dosage of 100 mcg works well for me and it has less odour than other brands, making it easy to consume.
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