These are the top 10 nitric oxide supplements right now, ordered by how many verified reviews each has earned, 49,807 in total across the list.
How we rank it: L-Citrulline, 750 mg, 90 Veg Capsules takes our top spot: it's the standout nitric oxide supplements in this guide, earning the lead for how consistently shoppers reach for it.
How we rank it: L-Citrulline, 750 mg, 180 Veg Capsules lands at #2 largely for NOW Foods's reputation for quality.
How we rank it: Sport, L-Citrulline, Kyowa Hakko, 500 mg, 60 Veggie Capsules lands at #3 largely for California Gold Nutrition's reputation for quality.
How we rank it: At #4, L-Citrulline Powder, 7 oz (200 g) earns its spot for how consistently shoppers reach for it.
How we rank it: We placed L-Citrulline 2000, Unflavored, 7.5 oz (200 g) at #5 thanks to its strong balance of quality and price.
How we rank it: We placed L-Citrulline, Unflavored , 1.3 lb (600 g) at #6 thanks to its strong balance of quality and price.
How we rank it: At #7, Performance, Nitric Oxide Booster, 180 Capsules earns its spot for how consistently shoppers reach for it.
How we rank it: At #8, Thinkbaby®, Zinc Oxide Sunscreen, SPF 50, 3 fl oz (89 ml) earns its spot for how consistently shoppers reach for it.
How we rank it: We placed Thinkbaby®, Zinc Oxide Sunscreen, SPF 50, 6 fl oz (177 ml) at #9 thanks to its strong balance of quality and price.
How we rank it: We placed Nitric Oxide Max™, Beet Root+ with Nitrates, 60 Capsules at #10 thanks to its strong balance of quality and price.
| # | Product | Brand | Score | Rating | Reviews | Price | |
|---|---|---|---|---|---|---|---|
| 1 | L-Citrulline, 750 mg, 90 Veg Capsules | NOW Foods | 9.5 | 4.7 | 4,288 | $17.14 | View → |
| 2 | L-Citrulline, 750 mg, 180 Veg Capsules | NOW Foods | 9.5 | 4.7 | 4,288 | $30.61 | View → |
| 3 | Sport, L-Citrulline, Kyowa Hakko, 500 mg, 60 Veggie Capsules | California Gold Nutrition | 9.5 | 4.7 | 3,754 | $7.56 | View → |
| 4 | L-Citrulline Powder, 7 oz (200 g) | Doctor's Best | 9.7 | 4.8 | 3,147 | $21.99 | View → |
| 5 | L-Citrulline 2000, Unflavored, 7.5 oz (200 g) | EVLution Nutrition | 9.7 | 4.8 | 2,766 | $15.89 | View → |
| 6 | L-Citrulline, Unflavored , 1.3 lb (600 g) | Nutricost | 9.7 | 4.8 | 1,322 | $29.95 | View → |
| 7 | Performance, Nitric Oxide Booster, 180 Capsules | Nutricost | 9.6 | 4.8 | 920 | $14.95 | View → |
| 8 | Thinkbaby®, Zinc Oxide Sunscreen, SPF 50, 3 fl oz (89 ml) | think | 8.9 | 4.4 | 21,895 | $15.49 | View → |
| 9 | Thinkbaby®, Zinc Oxide Sunscreen, SPF 50, 6 fl oz (177 ml) | think | 9.3 | 4.6 | 7,158 | $23.99 | View → |
| 10 | Nitric Oxide Max™, Beet Root+ with Nitrates, 60 Capsules | Nature's Truth | 9.2 | 4.6 | 269 | $11.01 | View → |
Our editorial team evaluates every product on the factors that matter most to shoppers, not just price.
We rank by verified customer reviews and rating. For added assurance, we recommend choosing products that carry independent third-party testing or certification. These organisations publish public standards and verified-product listings:
This guide is for general information only and is not medical advice. Consult a qualified professional before starting any supplement.
Based on verified customer review counts, L-Citrulline, 750 mg, 90 Veg Capsules by NOW Foods is the best-reviewed nitric oxide supplements, with 4,288 reviews and a 4.7/5 rating.
On this list, prices range from $7.56 to $30.61, with a typical price around $17.14.
L-Citrulline, 750 mg, 90 Veg Capsules leads with 4,288 verified reviews, followed by L-Citrulline, 750 mg, 180 Veg Capsules with 4,288.
Sport, L-Citrulline, Kyowa Hakko, 500 mg, 60 Veggie Capsules is the lowest-priced pick at $7.56, with a 4.7/5 rating from 3,754 reviews.
We rank nitric oxide supplements primarily by their number of verified customer reviews, a strong signal of real-world popularity, and factor in average rating. We never accept payment for placement.