If you are addicted to the pumped feeling during your workout (who isn't?), nitric oxide supplements may be something you want to try. Even better, unlike other products, nitric oxide supplements continue working long after your last rep.
The goal of nitric oxide supplements is to stimulate your body’s own production of nitric oxide. Nitric oxide enhances vascularity. Basically, vascularity is the rate at which oxygen-rich blood is delivered to your muscles and oxygen-depleted blood is removed. 
Obviously, the greater level of vascularity you possess, the more results you will see from each workout. A high level of vascularity means that your muscles are receiving adequate nutrients at a fast pace. This speeds up the recovery process and allows you to give maximal effort all the way through your workout.
Just What Is Nitric Oxide?
Nitric oxide (NO) is a naturally occurring compound that is made from the amino acid L-arginine. Nitric oxide production decreases with age. Nitric oxide supplements provide an excellent means for ensuring that your body is able to perform. 
Arginine has been studied extensively with some studies linking it to increased blood flow. Some studies have also linked it to vasodilation (increased diameter of blood vessels). 
Vasodilation is thought to result in a greater amount of blood that can flow through the blood vessels which can result in greater endurance and performance during workouts. This is where nitric oxide supplements may play a key role.
Best Nitric Oxide Supplements
Here's our list of the best nitric oxide supplements we have found so far:
1. BSN N.O.-Xplode
For enhanced physical energy and mental focus, BSN N.O.-Xplode delivers results. This NO supplement will motivate you to blow through the burn with an intensity that you have never known.
The bioavailability of the creatine and other amino acids, such as arginine, ensures that you muscles get the nutrients they need when they need them most. BSN N.O.-Xplode supports the anaerobic working capacity of your muscles, promoting both strength and endurance gains.
After assessing your tolerance to this NO supplement, mix 1 to 3 scoops of the powder in 5 to 15 ounces of water. Consume this 30 to 45 minutes prior to your workout. You may begin to notice results as early as five minutes after consumption. It is best if taken on an empty stomach on both training as well as non-training days.
Benefits of BSN N.O.-Xplode:
- Loaded with vitamins, minerals and amino acids
- Ideal combination of potassium and sodium for rapid recovery
- Contains zero grams of sugar
- Boosts power, strength and endurance
- Available in multiple flavors
2. BSN Nitrix
Enhance your size and dominate the pump with BSN Nitrix. Brought to you by the reputable BSN, Nitrix is a muscle volumizer that boasts a triple nitric oxide matrix as well as four unique creatine sources. BSN Nitrix does not contain any creatine monohydrate.
BSN Nitrix promotes increased blood flow to your working muscles in order to deliver oxygen and nutrients. The advanced technology behind BSN Nitrix helps arginine convert to nitric oxide at a quicker pace.
Found in tablet form, BSN Nitrix is a specially formulated NO supplement enhances cardiovascular performance while promoting muscle fullness. Its controlled release technology powers you through your entire workout without the use of harmful stimulants. BSN Nitrix contains two forms of L-arginine as well as L-citrulline.
Benefits of BNS Nitrix:
- Comes in convenient tablet form
- Works from morning until evening
- Supports all types of training
- Reduces lactic acid
- Speeds recovery
3. VPX NO Shotgun
To rapidly increase muscle growth, fuel your workouts with VPX NO Shotgun. This uniquely formulated powder activates cell proliferation while inducing both biochemical and physiological responses from your body.
VPX NO Shotgun is enhanced with BCAAs and protein peptides for nitrogen uptake and muscle synthesis. Its synergistic blend of minerals and compounds will help you take your workout to the next level.
Benefits of VPX NO Shotgun:
- Does not cause water retention
- Promotes insulin secretion as well as insulin sensitivity
- Designed for fat loss and muscular gains
- Assists with mental focus and alertness
* None of the statements on this page have been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.