Create a Prime Sports Nutrition Account!
Earn points for every $1 you spend, access exclusive promos, and get birthday rewards.
With your account, you can:
![](http://primesportsnutrition.com/cdn/shop/files/eye.png?v=1706185364&width=100)
![](http://primesportsnutrition.com/cdn/shop/files/discount.png?v=1706186676&width=100)
![](http://primesportsnutrition.com/cdn/shop/files/gift-box.png?v=1706184269&width=100)
![](http://primesportsnutrition.com/cdn/shop/files/shopping-cart.png?v=1706185364&width=100)
Couldn't load pickup availability
Order by 4pm PST to Ship Sameday
Next Day Air Shipping Available
24/7 Email Support
Nutrabio - L Arginine
Our free-form L-Arginine is HPLC verified ultra-pure for maximum bioavailability and effectiveness. Arginine (or L-Arginine) is a crystalline free-form amino acid involved in numerous areas of human biochemistry, including muscle metabolism, hormone secretion, ammonia detoxification, and the immune system. Arginine promotes nitric oxide production, which helps support circulation and muscles.
L-Arginine is one of 20 amino acids, the building blocks of protein. Arginine can serve as a source of energy, and is involved in various pathways throughout the body. Arginine supports the effect of exercise and is one of the most important amino acids involved in immune function.L-Arginine is considered a semi-essential amino acid, because although it is normally synthesized in sufficient amounts by the body, supplementation is sometimes required. Arginine supports protein synthesis as it is involved in the transport and storage of nitrogen and is important for proper physical performance because it is used by the body to produce creatine.
L-Arginine is required for the synthesis of nitric oxide, a secondary messenger involved in blood flow. Nitric oxide is a compound that helps keep blood vessels dilated to promote healthy blood flow. Arginine also stimulates protein synthesis and has been studied for wound healing, bodybuilding, enhancement of sperm production (spermatogenesis), and prevention of wasting in people with critical illness. L-Arginine is beneficial for overall cardiovascular maintenance as well as other areas that depend largely on healthy circulatory status.
Arginine stimulates the natural release of growth hormone and is a far safer and more cost effective alternative to growth hormone treatment such as HGH injections. Growth hormone is one of the most powerful hormones in the human body which promotes the growth of lean muscle tissue and the loss of fat. As you age, growth hormone levels drop, which is one reason you lose muscle and gain fat. In a controlled trial, when arginine and other amino acids were combined with weight training, a greater decrease in body fat was obtained after only five weeks than when the same exercise was combined with a placebo. Arginine is also needed to increase protein synthesis, which can in turn increase muscle growth. [1,2].
Athletes involved in intense exercise on a regular basis need Growth Hormone (GH) to increase energy, enhance lean body mass and to maintain strong bones and keep their weight under control. Availability of GH in systemic circulation also helps increase strength, burn fat, enhance libido, boost immunity and support tendons and ligaments. By inducing the secretion of GH from the pituitary, arginine and lysine stimulate muscle metabolism and, hence, provide nutritional support for the athlete.
Order by 3pm for Next Day Air Shipping, see pricing at checkout:
Our return/exchange policy is valid for only 30 days.
We offer free USPS ground shipping (5-day) orders $99+ and 2-day priority shipping for a $20 fee. In most cases, orders before 3pm PST ship the same day & all other orders are fulfilled within 24 hours. (excluding holidays & weekends)
Do you have a Subscription/reoccurring order - To manage click here
To see Return, Exchange, Cancel your order click here
Order Delay? If your purchase was made after the cutoff time (3pm PST) to ship the same day. That means your order will be shipping the next business day not including weekends or holidays.
If you would like to cancel your subscription, please see the link below. To avoid extra charges you must cancel your subscription 7 days prior to the next withdrawal. Disclosure: You can only cancel future orders and any processed payments are non refundable & the order will be fully processed.
If you attempted to place an order multiple times but did not receive an order confirmation email with a 6-digit order number, this means your order did not go through. These transactions shown on your account will clear & fall off or self-cancel within 24-48 hours. Please do not contact customer service unless it's already been 3 business days and the charges have still not reversed. If you need to resubmit your order please call our customer service line at 833-399-3799.
Next Day Air deliveries are done Monday through Saturday. Orders placed before 4 pm Monday through Friday are guaranteed to ship the same day and be delivered the following day. Orders placed on Saturday before or after 4 pm won’t ship until Monday morning and will be delivered on Tuesday.
Please note that Prime Sports Nutrition is not responsible for any delays with deliveries caused by UPS. Prime Sports Nutrition is only responsible for delivering your package within the cut off times disclosed above. Any delay with a Next Day Delivery package caused by UPS must be disputed directly with the carrier. In other words, Prime Sports Nutrition cannot issue a refund for any Next Day Air package that was dispatched to UPS within the cut off time but delayed by UPS.
We thank you for your understanding and look forward to continuing providing you with exceptional customer service.
To be eligible for a return, the product/s must be unused and sealed. The products must also be in the original packaging. Prior to returning a package you are required to get an approval from our customer fulfillment department via email (info@shopteamprime.com) Any packages sent without approval will not be refunded. A 20% restocking fee is applicable to order cancellations regardless of whether the package has shipped or not.
Do not send packages without prior approval to any Prime Sports Nutrition location as it will not be processed.
ALL muscle builder/sarms products are final sale. Regardless if item hasn't left our shipping department.
For any damaged shipments, please submit images of damaged goods & package to our customer service email: info@PrimeSportsNutrition.com
We are not responsible for lost or stolen packages. You may purchase Aftership or Shipping Protection during checkout to protect yourself from porch piracy. Alternatively, you can open a claim with the responsible carrier.
We do not provide free returns unless the incorrect product was delivered.
Upon receipt of the package, one of our team members will contact you to proceed with the exchange/return.
Click here to start your return
Customer Service Hours: Open Daily 11am-5pm PST. We typically respond to inquires within 24hrs. Please email: Info@PrimeSportsNutrition.com or call us by phone at (833) 399-3799.
We do not store credit card details nor have access to your credit card information.