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NOW Foods Selenium
SCIENTIFIC SCORE
Moderately Effective
Based on 8 Researches
8
USERS' SCORE
Good
Based on 10 Reviews
8.6
Supplement Facts
Serving Size: 1 Veg Capsule
Amount Per Serving
%DV
Selenium (elemental)(from 40 mg L-Selenomethionine)
200 mcg
364%

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
Thyroid support
Help your thyroid gland! I take selenium regularly as it aids the thyroid in producing hormones, converting T4 to T3, and potentially reducing antibodies to thyroid peroxidase. Selenium deficiency is linked with worsening eye conditions and increases the risk of postpartum thyroid issues. Experts recommend checking selenium levels in thyroid disease patients. It’s hard to obtain selenium from food, especially from selenium-rich Brazil nuts. If levels are low, consult your doctor about supplementation.
Read More
8.8
Supports thyroid health
I drink selenium for thyroid disease. Selenium is vital for the thyroid gland as it converts the inactive hormone T4 into the active form T3 and protects thyroid cells from oxidative damage. This medication alleviates thyroid symptoms and reduces antibodies. Studies indicate that 100 mcg is insufficient, while 200 mcg is optimal. This dosage works wonders for overall health.
Read More
8.8
Lowered thyroid levels
Two years ago, I was diagnosed with autoimmune thyroiditis, and my BP-TSH level was 1114 when it should be below 10. After two years of selenium and vitamin D3, it decreased to 635, which makes me very happy! This indicates that the supplement truly works and helps me maintain better 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 10 Reviews
8.6
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9.5
Thyroid support
Help your thyroid gland! I take selenium regularly as it aids the thyroid in producing hormones, converting T4 to T3, and potentially reducing antibodies to thyroid peroxidase. Selenium deficiency is linked with worsening eye conditions and increases the risk of postpartum thyroid issues. Experts recommend checking selenium levels in thyroid disease patients. It’s hard to obtain selenium from food, especially from selenium-rich Brazil nuts. If levels are low, consult your doctor about supplementation.
Read More
8.8
Supports thyroid health
I drink selenium for thyroid disease. Selenium is vital for the thyroid gland as it converts the inactive hormone T4 into the active form T3 and protects thyroid cells from oxidative damage. This medication alleviates thyroid symptoms and reduces antibodies. Studies indicate that 100 mcg is insufficient, while 200 mcg is optimal. This dosage works wonders for overall health.
Read More
8.8
Lowered thyroid levels
Two years ago, I was diagnosed with autoimmune thyroiditis, and my BP-TSH level was 1114 when it should be below 10. After two years of selenium and vitamin D3, it decreased to 635, which makes me very happy! This indicates that the supplement truly works and helps me maintain better health.
Read More
6.8
Supports heart health
Now Foods Selenium is a high-quality supplement providing essential minerals with antioxidant properties. It offers 200mcg of selenium for your daily needs. Selenium supports multiple bodily processes, particularly in aiding the immune system and preventing cardiovascular disease. Its form allows for effective absorption.
Read More
8.8
Enhanced immunity
After using a few bottles for Hashimoto's disease, I have noticed a significant improvement in my immunity and a reduction in hair loss. I must continue buying it, even though the price has increased.
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