Endurance Products supplements are specially formulated to support active bodies! Whether you're a weekend warrior or a competitive athlete, your body needs special nutritional support to meet the demands of regular training and fast recovery.*
Endurance Athletes

Endurance Athletes
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Endurance Products supplements are specially formulated to support active bodies! Whether you're a weekend warrior or a competitive athlete, your body needs special nutritional support to meet the demands of regular training and fast recovery.*
Endurance Products supplements are specially formulated to support active bodies! Whether you're a weekend warrior or a competitive athlete, your body needs special nutritional support to meet the demands of regular training and fast recovery.*
L-Arginine 350mg Sustained Release

Sustained Release
Sustained Release
From $36.99
An amino acid that may help maintain healthy blood vessel function, optimal blood flow, endothelial health, and blood pressure in the normal range.
At-a-Glance
- Helps maintain healthy blood pressure in the normal range*
- Supports cardiovascular health and blood vessel function*
- Promotes healthy nitric oxide production*
- Features sustained-release delivery for optimal absorption
Product Description
L-Arginine Sustained Release (SR) is an advanced dietary supplement designed for adults interested in overall cardiovascular health, including maintaining healthy blood pressure in the normal range.*
L-Arginine SR features the amino acid L-Arginine in a unique vegetable-based wax matrix that releases L-Arginine gradually. An optimal blood level of L-Arginine is critical for vascular health. Your endothelium – the layer of cells that line your blood vessels – relies on this amino acid for a healthy production of nitric oxide. In turn, nitric oxide plays a key role in vascular health, including promoting blood vessel relaxation and optimal blood flow.*
L-Arginine SR and its ability to support blood vessel health is ideally suited for athletes, active adults and others interested in maintaining healthy blood vessel function. Adults interested in overall health can benefit from L-Arginine SR as well. L-Arginine – one of the body’s most metabolically versatile amino acids – also plays a role in immune health, detoxification, protein synthesis, hormone regulation, male fertility, and more.*
* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
Features
- No salt, starch, preservatives, artificial color or flavorings
- Free of common allergens (milk, egg, fish, shellfish, tree nuts, peanuts, wheat and soy)
- Convenient, easy-to-swallow tablets
Frequently Asked Questions
What can you expect?
L-Arginine SR is a unique dietary supplement specially formulated for adults to support vascular health, including healthy blood vessel function.*
How does it work?
Each tablet dissolves slowly for a steady release of L-Arginine over 4 to 6 hours. This promotes optimal absorption and tissue retention without an excessive amount of Arginine typically found in regular immediate-release forms.*
How do you take it?
As a dietary supplement for adults, take three (3) tablets twice daily, preferably with meals, or as directed by your healthcare practitioner. It is normal for this product to have a distinctive botanical aroma.
Are there any precautions?
Consult your healthcare professional prior to use if you have or suspect a medical condition, are taking any medications, or are nursing or pregnant. As with all dietary supplements, keep out of reach of children.
What product quality control tests are performed?
L-Arginine SR is manufactured in the United States (Oregon) in a state-of-the-art, FDA-registered facility that meets or exceeds current Good Manufacturing Practices (cGMP). Quality control tests are performed at every stage of the manufacturing process from rigorous raw material testing to finished product testing.
Omega-3 Phospholipid 500mg (180 Softgels)

Immediate Release
On Sale
$39.99
Regular price
$54.99
Featuring Superba™ krill oil, it helps increase plasma EPA and DHA omega-3 fatty acid levels in the blood to promote heart health and cardiovascular function.
At-a-Glance
- May reduce coronary heart disease risk**
- Promotes a healthy inflammatory response*
- Supports whole body cellular function*
Product Description
Omega-3 Phospholipid 500mg (100% Pure Krill Oil) is ideal for adults interested in both heart health and whole body health.*
Omega-3 Phospholipid features 100% pure Superba™ krill oil, a naturally sourced ingredient with omega-3 fatty acids in the highly bioavailable phospholipid form along with astaxanthin, a powerful antioxidant that acts as a naturally sourced preservative.*
Superba™ krill oil is clinically shown to increase blood levels of EPA and DHA omega-3 fatty acids. These omega-3 fatty acids are critical for a wide range of biochemical processes involved in heart health, a healthy inflammatory response, immune defense, memory and cognitive function, and cellular health.*
Omega-3 Phospholipid may help reduce coronary heart disease risk.** It supports heart health, in part, by helping to maintain a healthy Omega-3 Index. The Omega-3 Index is an emerging biomarker for heart health and reflects the EPA and DHA content of red blood cell membranes that results from the long-term intake of these omega-3 fatty acids.*
Omega-3 Phospholipid also helps ensure an optimal intake of omega-3 fatty acids critical for cell membranes to take in nutrients, expel waste products, and activate cell signaling pathways. Omega-3 fatty acids also serve as building blocks for bioactive compounds that promote a healthy inflammatory response. Inside cells, omega-3 fatty acids play a role in numerous biological pathways involved in immune defense, lipid balance and other functions.*
Superba™ is a trademark of the Aker Group.
**Supportive but not conclusive research shows that consumption of EPA and DHA omega-3 fatty acids may reduce the risk of coronary heart disease. One serving of Omega-3 Phospholipid provides 0.176 grams of EPA and DHA omega-3 fatty acids.
Features
- Easy-to-swallow softgels
- Gluten-free
- Free of common allergens (milk, egg, tree nuts, peanuts, wheat and soy). Contains shellfish
- Derived exclusively from sustainably harvested Antarctic krill (Euphausia superba), 100% traceable from sea to shelf
Frequently Asked Questions
What can you expect?
Omega-3 Phospholipid is a unique dietary supplement for men and women to support whole body health, especially heart health.*
How does it work?
When taken as directed, Omega-3 Phospholipid helps increase blood levels of EPA and DHA omega-3 fatty acids.
How do you take it?
As a dietary supplement for adults, take two (2) softgels twice daily with a meal or snack, or as directed by your healthcare practitioner.
Are there any precautions?
Consult your healthcare professional prior to use if you have or suspect a medical condition, are taking any medications, or are pregnant or nursing. As with all dietary supplements, keep out of reach of children.
What product quality control tests are performed?
Omega-3 Phospholipid is manufactured in the United States in a state-of-the-art, FDA-registered facility that meets or exceeds current Good Manufacturing Practices (cGMP). Quality control tests are performed at every stage of the manufacturing process from rigorous raw material testing to finished product testing.
Cal-Mag Complex (300mg-150mg) + Vitamin D (400 IU) (300 Tablets)

Immediate Release
$20.99
With calcium, magnesium, and vitamin D, this complex supports heart function, blood vessel health, and helps control the relaxing and constricting of blood vessels critical to healthy blood pressure.
At-a-Glance
- May reduce the risk of osteoporosis**
- Promotes heart & blood vessel health*
- Supports muscle & nerve function*
- Helps maintain healthy immune function*
Product Description
Cal-Mag Complex™ is ideal for adults who need a convenient, daily supplement to ensure an adequate intake of calcium, magnesium and vitamin D that is both easy-to-swallow and gentle on the stomach.
Cal-Mag Complex™ features a stomach-friendly blend of carbonate and citrate, two of the most researched forms of calcium. While calcium is best known for bone health, it also play a key role in muscle and nerve function, heart and blood vessel health, hormone regulation and enzyme activity, and may even play a role in fat metabolism.*
Each easy-to-swallow tablet also features a stomach-friendly blend of well-researched magnesium sources (oxide and citrate) in the preferred 2:1 calcium-to-magnesium ratio. Like calcium, magnesium plays a key role in bone health and muscle and nerve function, as well as heart health and energy production. The body relies on magnesium to produce a wide range of bioactive compounds.*
Vitamin D completes the formula in the highly bioavailable cholecalciferol form for additional nutritional support for bone health, immune defense, healthy cell division and muscle function.*
**Adequate calcium and vitamin D throughout life, as part of a well-balanced diet, may reduce the risk of osteoporosis.
Features
- Easy-to-swallow tablets
- No sugar, artificial colors or flavorings, or preservatives
- Vegan/Vegetarian
- Free of common allergens (milk, egg, fish, shellfish, tree nuts, peanuts, wheat and soy)
- Stomach-friendly formula for digestive comfort
- Preferred 2:1 calcium-to-magnesium ratio
Frequently Asked Questions
What can you expect?
Cal-Mag Complex™ is a convenient daily solution for adults to help fill the nutrient gap between what a typical diet provides and what the body needs for optimal health. Getting enough calcium, magnesium, and vitamin D to meet the body's needs from food alone can be particularly challenging, especially for people taking certain medications that can deplete body stores.*
How does it work?
Each easy-to-swallow tablet is specially formulated to be gentle on the stomach yet deliver effective amounts of bioavailable calcium and magnesium – in the preferred 2:1 ratio – along with vitamin D3.
How do you take it?
As a dietary supplement for adults, take one (1) tablet with a meal or snack, up to four times daily, or as directed by your healthcare professional. It is normal for this product to have a distinctive botanical aroma.
Are there any precautions?
Consult your healthcare professional prior to use if you have or suspect a medical condition, are taking any medications, or are nursing or pregnant. As with all dietary supplements, keep out of reach of children.
What product quality control tests are performed?
Cal-Mag Complex™is manufactured in the United States (Oregon) in a state-of-the-art, FDA-registered facility that meets or exceeds current Good Manufacturing Practices (cGMP). Quality control tests are performed at every stage of the manufacturing process from rigorous raw material testing to finished product testing.
Electrolyte SR Sustained Release Electrolyte

Sustained Release
Sustained Release
On Sale
$19.99
Regular price
$23.99
Sustained-release, balanced, and buffered electrolytes provide a steady stream of phosphorus, magnesium, sodium, chloride, and potassium to help us stay hydrated and maintain peak performance during vigorous physical activity, especially in hot climates. It also helps us rehydrate quickly after activity.
At-a-Glance
- Sustained Release: Provides a continuous supply of electrolytes during physical activity*
- Efficient: Gradual release means taking fewer tablets, less often
- Convenient: Take tablets before or after exercise, drinking only water at regular intervals
- Balanced Formula: Includes magnesium and potassium with phosphates for buffering and absorption*
- Clean Label: Free of artificial ingredients, sugar, starch, and common allergens
Product Description
Electrolyte SR Sustained Release Electrolyte is a balanced combination of electrolytes designed for adults (and teens) who engage in vigorous, prolonged physical activity, especially in a hot climate. Whether your active lifestyle is for work, play, or sports, Electrolyte SR can help you maintain peak performance during your activity and recover fast for your next challenge.*
Electrolyte SR uses an advanced delivery technology to release electrolytes slowly over a 4 to 6 hour period as your body needs them to absorb the fluids you drink. Take Electrolyte SR before your activity to help maintain fluid balance, or take after your activity to rehydrate fast. Simply drink plenty of water according to thirst.*
Features
- Easy-to-swallow tablets
- No sugar, starch, artificial colors or flavorings, or preservatives
- Gluten-free
- Vegan/Vegetarian
- Free of common allergens (milk, egg, fish, shellfish, tree nuts, peanuts, wheat and soy)
Frequently Asked Questions
What can you expect?
Electrolyte SR helps you maintain peak performance during vigorous activity and recover fast.*
How does it work?
Electrolyte SR slowly releases electrolytes over a 4 to 6 hour period as your body needs them to absorb the fluids you drink.*
How do you take it?
As an electrolyte replacement, take 1-3 tablets with a large glass of water one-half hour prior to physical activity that results in fluid loss. Dose depends on duration of activity and volume to fluid loss. Electrolyte SR can also be taken after fluid loss to help restore electrolyte and fluid balance. Drink plenty of water according to thirst.
Are there any precautions?
Consult your physician prior to use if you have or suspect a medical condition, are taking any medications, or are nursing or pregnant. As with all dietary supplements, keep out of reach of children.
What product quality control tests are performed?
Electrolyte SR is manufactured in the United States (Oregon) in a state-of-the-art, FDA-registered facility that meets or exceeds current Good Manufacturing Practices (cGMP). Quality control tests are performed at every stage of the manufacturing process from rigorous raw material testing to finished product testing.
Choline 300mg Sustained Release

Sustained Release
Sustained Release
On Sale
$22.99
Regular price
$28.99
An essential nutrient for our body, it promotes cardiovascular health and healthy liver function. It supports the brain and nervous system.
At-a-Glance
- Promotes healthy liver function & lipid metabolism*
- Helps maintain cell integrity and function*
- Supports heart, nervous system & whole body health*
- Promotes baby's brain health as pre- or post-natal supplement*
- Sustained-release for high bioavailability
Product Description
Choline 300mg Sustained Release (SR) is ideal for adults who want targeted nutritional support for healthy liver function and lipid metabolism, as well as whole body support for optimal cell function at any age.*
Choline SR provides an excellent source of choline with 300mg per tablet. As a building block for phosphatidylcholine, choline supports cell membrane integrity and cell signaling, fat digestion and liver function and lipid metabolism.*
In the liver, choline-derived phosphatidylcholine helps transform VLDL (very low density lipoprotein) particles into water-loving molecules that can shuttle triglycerides through the bloodstream to fat cells for storage or muscle cells for immediate use. Choline is also a building block for acetylcholine, an important biochemical messenger for nerve cell communication.*
Yet the body’s biggest demand for choline is as a source of methyl groups needed not only for healthy cell function, but also for gene expression, detoxification, and more. Choline is even at the core of a healthy homocysteine metabolism, which is an emerging biomarker for heart health.*
Choline SR can be part of a pre- or post-natal supplement plan to help mothers-to-be and new moms fill any nutrient gap between what they consume and what a baby’s brain needs to thrive.* Choline plays a key role in fetal development, especially brain development, which is particularly rapid during the third trimester of pregnancy. For this reason, the recommended intake for choline is high for pregnant women (450 mg/day) and even higher for women who are nursing (550 mg/day).
Features
- Easy-to-swallow tablets
- No sugar, starch, artificial flavors, colors, sweeteners or preservatives
- Gluten-free
- Vegan/Vegetarian
- Free of common allergens (milk, egg, fish, shellfish, tree nuts, peanuts, wheat and soy)
Frequently Asked Questions
What can you expect?
Choline SR provides daily nutritional support for whole body health with targeted benefits for healthy liver function and lipid metabolism.*
How does it work?
In the body, each tablet dissolves slowly over 5 to 7 hours, providing a steady release of choline for high bioavailability and optimal absorption.
How do you take it?
As a dietary supplement for adults, take two (2) to six (6) tablets daily in divided doses, preferably with meals, or as directed by your healthcare professional.
Are there any precautions?
Consult your healthcare professional prior to use if you have or suspect a medical condition, are taking any medications, or are nursing or pregnant. As with all dietary supplements, keep out of reach of children.
What product quality control tests are performed?
Choline SR is manufactured in the United States (Oregon) in a state-of-the-art, FDA-registered facility that meets or exceeds current Good Manufacturing Practices (cGMP). Quality control tests are performed at every stage of the manufacturing process from rigorous raw material testing to finished product testing.