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NOW Supplements Selenium
SCIENTIFIC SCORE
Possibly Effective
Based on 9 Researches
7.6
USERS' SCORE
Good
Based on 18 Reviews
8.6
Supplement Facts
Serving Size: 1 Tablet
Amount Per Serving
%DV
Selenium (elemental) (from 20 mg L-Selenomethionine)
100 mcg
182%

Top Medical Research Studies

9.5
Ebselen delays blood clot formation
Anti-oxidant ebselen delays microvascular thrombus formation in the rat cremaster muscle by inhibiting platelet P-selectin expression.
Relevant to oxidative stress research
We explored the effects of ebselen, a selenium compound known for its antioxidant properties, on blood clot formation in rats. Our study demonstrated that ebselen significantly delayed thrombus formation in microvessels.

In particular, animals treated with ebselen showed a marked delay in vessel occlusion compared to those treated with a control substance. In most cases, ebselen entirely prevented blood clot formation in arterioles.

This suggests that ebselen can be effective in reducing the risk of blood clots, particularly in situations characterized by oxidative stress.
Read More
7
Antioxidants may aid cardiovascular health
Effect of low dose antioxidant vitamin and trace element supplementation on the urinary concentrations of thromboxane and prostacyclin metabolites.
High relevance to cardiovascular research
We explored how low-dose antioxidant supplements affect urinary markers linked to blood clotting and cardiovascular health. In this randomized, double-blind, placebo-controlled study with 186 healthy volunteers, one group received supplements while the other received a placebo for two years.

Our findings show that participants who took the multi-antioxidants had significantly lower levels of a specific urinary marker associated with platelet activity. Notably, selenium was particularly linked to these results, suggesting it can help reduce clot formation, which might support heart health.
Read More
7
Selenium may reduce platelet function
Effects of sodium selenite on in vitro interactions between platelets and endothelial cells.
Moderate relevance to thrombosis research.
Our study explored how selenium influences the interaction between platelets and endothelial cells, especially regarding blood clot formation. We noticed that selenium supplementation increased the activity of protective enzymes in both platelets and endothelial cells.

Interestingly, we found that platelets showed reduced aggregation in the presence of selenium-rich endothelial cells. However, this effect was nullified when we used aspirin, indicating a complex relationship. Ultimately, while selenium shows promise, we did not find significant improvements in nitric oxide levels linked to clot prevention.
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Most Useful Reviews

9.5
Essential for thyroid
I take this selenium as prescribed for my thyroid condition. It has no taste or smell, yet its benefits are vast. Selenium is crucial for the body's organs, boosts immune function, and possesses antioxidant and anti-inflammatory properties. It strengthens blood vessels, reducing plaque risk and protecting the heart. It also aids muscle and skin cell regeneration and improves gastrointestinal health.
Read More
9.5
Blood thinning benefits
This microelement thins the blood, thus preventing blood clots and reducing bad cholesterol levels. Selenium helps prevent atherosclerosis and positively affects the nervous system while offering anti-inflammatory benefits, assisting with asthma. I consistently use this selenium for my family's health.
Read More
8.8
Helps muscle weakness
If you're dealing with thyroid issues, especially autoimmunity, consult your doctor about this! I have Hashimoto's, and it's helped me immensely. After a couple of months on two tablets daily, my muscle weakness and twitches have significantly decreased. They are easy to swallow and are well absorbed, as shown in my blood work.
Read More

Medical Researches

SCIENTIFIC SCORE
Possibly Effective
Based on 9 Researches
7.6
  • All Researches
9.5
Selenium-based therapy shows promise
Bionanoengineered 2D monoelemental selenene for piezothrombolysis.
High relevance in thrombolytic research
We explored a new approach to treat blood clots using piezoelectric selenene. This study introduced a unique design that combines selenene with platelet membranes, enhancing its ability to target thrombosis.

Under ultrasound, the selenene generates reactive oxygen species, effectively dissolving clots without the bleeding risks associated with traditional therapies.

In both lab and live animal tests, these selenium-based nanosheets demonstrated impressive results, outperforming a standard clinical drug. It's a promising step toward safer, more effective treatments for thrombosis.
Read More
9.5
Ebselen delays blood clot formation
Anti-oxidant ebselen delays microvascular thrombus formation in the rat cremaster muscle by inhibiting platelet P-selectin expression.
Relevant to oxidative stress research
We explored the effects of ebselen, a selenium compound known for its antioxidant properties, on blood clot formation in rats. Our study demonstrated that ebselen significantly delayed thrombus formation in microvessels.

In particular, animals treated with ebselen showed a marked delay in vessel occlusion compared to those treated with a control substance. In most cases, ebselen entirely prevented blood clot formation in arterioles.

This suggests that ebselen can be effective in reducing the risk of blood clots, particularly in situations characterized by oxidative stress.
Read More
9
Selenium polymer reduces blood clots
Multifunctional Nitroso--acetylpenicillamine-Incorporated Medical-Grade Polymer with Selenium Interface for Biomedical Applications.
High relevance in medical devices
We explored the effectiveness of a new polymer infused with selenium in tackling blood clots and infections associated with medical devices. This SNAP-Se-1 composite works by releasing nitric oxide (NO), a natural defender against both issues. We found that it remarkably reduced platelet adhesion by 85.5% while also displaying antibacterial properties. Importantly, this innovative approach minimizes the need for traditional antibiotic treatments. Overall, while we see promising results in lab settings, further research is needed to confirm these benefits in real-world applications.
Read More
8
Enhanced imaging for carotid thrombosis
High Contrast Detection of Carotid Neothrombus with Strong Near-Infrared Absorption Selenium Nanosphere Enhanced Photoacoustic Imaging.
High relevance for stroke diagnosis
We investigated how selenium-based nanomaterials boost photoacoustic imaging to identify carotid artery blood clots more effectively. By using a thrombosis model in mice, we found that these nanocomposites significantly enhanced imaging signals—up to 5 times greater—which helps diagnose the extent of carotid atherosclerosis.

This research suggests that selenium/polypyrrole nanoparticles may be a promising tool for improving the detection and diagnosis of carotid thrombosis, potentially leading to better stroke prevention strategies.
Read More
7
Antioxidants may aid cardiovascular health
Effect of low dose antioxidant vitamin and trace element supplementation on the urinary concentrations of thromboxane and prostacyclin metabolites.
High relevance to cardiovascular research
We explored how low-dose antioxidant supplements affect urinary markers linked to blood clotting and cardiovascular health. In this randomized, double-blind, placebo-controlled study with 186 healthy volunteers, one group received supplements while the other received a placebo for two years.

Our findings show that participants who took the multi-antioxidants had significantly lower levels of a specific urinary marker associated with platelet activity. Notably, selenium was particularly linked to these results, suggesting it can help reduce clot formation, which might support heart health.
Read More

User Reviews

USERS' SCORE
Good
Based on 18 Reviews
8.6
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9.5
Essential for thyroid
I take this selenium as prescribed for my thyroid condition. It has no taste or smell, yet its benefits are vast. Selenium is crucial for the body's organs, boosts immune function, and possesses antioxidant and anti-inflammatory properties. It strengthens blood vessels, reducing plaque risk and protecting the heart. It also aids muscle and skin cell regeneration and improves gastrointestinal health.
Read More
9.5
Blood thinning benefits
This microelement thins the blood, thus preventing blood clots and reducing bad cholesterol levels. Selenium helps prevent atherosclerosis and positively affects the nervous system while offering anti-inflammatory benefits, assisting with asthma. I consistently use this selenium for my family's health.
Read More
8.8
Helps muscle weakness
If you're dealing with thyroid issues, especially autoimmunity, consult your doctor about this! I have Hashimoto's, and it's helped me immensely. After a couple of months on two tablets daily, my muscle weakness and twitches have significantly decreased. They are easy to swallow and are well absorbed, as shown in my blood work.
Read More
9.3
Boosts immunity
Selenium, though not widely recognised, is a crucial trace element that aids in synthesising selenoproteins with antioxidant properties. It combats free radicals, curbs inflammation, and enhances skin health. Selenium is essential for cardiovascular wellbeing and can prevent heart disease by avoiding arterial blockage and bolstering blood vessel walls.
Read More
8.8
Quality supplementation
High-quality selenium thins the blood to reduce the risk of blood clots and lowers bad cholesterol levels. It effectively prevents atherosclerosis, supports the nervous system, and offers anti-inflammatory properties, aiding in asthma symptom relief.
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