Thank you!
Your email is being processed.
You purchased this item on
View this order
Exercise performance support, Circulation and blood flow, Workout pump
Active adults looking for a pre-workout nitric oxide boost or those with low dietary intake of arginine-rich foods such as nuts and legumes.
Take 3 capsules once daily with 240–300 ml of water; taking 30–60 minutes before exercise is common for nitric oxide-focused formulas, and using with a meal may aid stomach comfort.
Contains gelatin capsule. Third-party tested as stated by the brand.
L-arginine serves as a direct substrate for nitric oxide synthase to produce nitric oxide, which relaxes blood vessels and supports blood flow.
Caution: May cause gastrointestinal discomfort in some people; start with the suggested serving to assess tolerance.
Provides ionised L-arginine that is used by nitric oxide synthase to generate nitric oxide for vascular relaxation.
Caution: Those sensitive to acidic salts may notice stomach upset; take with water and food if needed.
Combines L-arginine, a nitric oxide precursor, with alpha-ketoglutarate, a Krebs cycle intermediate, to support nitric oxide production and cellular energy processes.
Caution: May interact with other arginine sources to increase total intake; avoid combining with multiple arginine products.
L-citrulline is converted in the urea cycle to L-arginine, which can then be used to produce nitric oxide and support circulation.
Caution: Can lower perceived blood pressure in some users; monitor how you feel, especially if you are sensitive to vasodilation effects.
Supplies L-citrulline to regenerate L-arginine for nitric oxide production, while malate participates in energy-yielding pathways.
Caution: May cause mild stomach discomfort in some people; taking with water can help tolerance.
Direct arginine sources feed nitric oxide synthase immediately, while citrulline replenishes arginine through the urea cycle, sustaining nitric oxide availability. Malate and alpha-ketoglutarate support cellular energy pathways, complementing nitric oxide-related blood flow during activity.
Label Warning: For healthy adults aged 18 years and over. Consult a healthcare professional before use if pregnant or nursing, taking medication, or have a medical condition.
Who should be cautious: People with low blood pressure, cardiovascular concerns, kidney issues, or a history of cold sores may wish to seek advice before use. Those using blood pressure medications or erectile dysfunction medications may experience additive effects and should consult a healthcare professional.
Storage: Store in a cool, dry place.
This product is guaranteed authentic and backed by our easy returns and refunds policy. Details
L-Citrulline may enhance nitric oxide production, improving blood flow and exercise performance. Combining these can support better muscle pumps and endurance during workouts.
AI generated. Not medical advice.
Sorry, there was a problem adding this item to basket. Please refresh the page and try again.
Potent Nitric Oxide Boost: PrimaForce Nitric Oxide Booster delivers a high-quality blend of l-arginine, l-arginine HCl, arginine AKG 2:1, l-citrulline, and l-citrulline malate 2:1, providing a total of 2,250 mg per serving to support nitric oxide production.
As a food supplement, take three capsules daily with 240–300 ml (8–12 oz) of water or as directed by your healthcare professional.
Gelatine capsule, magnesium stearate (plant-based source), calcium silicate,, silica.
For healthy individuals aged 18 years and older. Consult a healthcare professional before use if you are pregnant or nursing, taking medication, or have a medical condition. Keep out of the reach of children. Do not use if the safety seal is broken or missing.
Store in a cool, dry place.
While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally be despatched with alternative packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and do not rely solely on the information provided by iHerb. This website has been machine translated as a courtesy to customers. iHerb does not represent or warrant that the translations are complete or error-free and iHerb is not responsible for any translation errors or omissions.
| Supplement information | ||
| Serving size: three capsules | ||
| Servings per container: 40 | ||
| Amount per serving | RI % | |
| L-Arginine | 500 mg | * |
| L-Arginine HCl | 500 mg | * |
| Arginine AKG 2:1 | 500 mg | * |
| L-citrulline | 375 mg | * |
| L-Citrulline Malate 2:1 | 375 mg | * |
| *Reference intake (RI) not established. | ||
