--- product_id: 2588276 title: "NOW Sports, Arginine & Citrulline 500 mg/ 250 mg, Amino Acids, 120 Veg Caps" brand: "now foods" price: "$37.92" currency: USD in_stock: true reviews_count: 13 category: "Now Foods" url: https://www.desertcart.us/products/2588276-now-sports-arginine-and-citrulline-500-mg-250-mg-amino store_origin: US region: United States of America --- # 120 vegan, non-GMO capsules per bottle 500 mg L-Arginine + 250 mg L-Citrulline per capsule GMP A-rated tested for purity & potency NOW Sports, Arginine & Citrulline 500 mg/ 250 mg, Amino Acids, 120 Veg Caps **Brand:** now foods **Price:** $37.92 **Availability:** ✅ In Stock ## Summary > 🔥 Elevate your workout game with pure amino power 💪 ## Quick Answers - **What is this?** NOW Sports, Arginine & Citrulline 500 mg/ 250 mg, Amino Acids, 120 Veg Caps by now foods - **How much does it cost?** $37.92 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/2588276-now-sports-arginine-and-citrulline-500-mg-250-mg-amino) ## Best For - now foods enthusiasts ## Why This Product - Trusted now foods brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Convenient Daily Fuel:** 120 easy-to-swallow capsules provide a month+ supply of pre-workout nitric oxide precursors for consistent gains. - • **Dual Amino Powerhouse:** Optimized 2:1 ratio of Arginine & Citrulline fuels nitric oxide for peak blood flow and muscle pumps. - • **Clean & Certified Quality:** GMP A-rated manufacturing ensures every capsule delivers pure, potent performance support you can trust. - • **Endurance & Recovery Boost:** Supports protein metabolism and muscle maintenance to keep you going harder and recovering faster. - • **Vegan & Allergen-Free Formula:** Free from soy, dairy, nuts, and GMOs—perfect for clean, conscious fitness lifestyles. ## Overview NOW Sports Nutrition Arginine & Citrulline delivers a scientifically balanced 500 mg/250 mg dose of key amino acids in 120 vegan capsules. GMP-certified for purity and potency, this allergen-free formula supports nitric oxide production, enhancing blood flow, muscle endurance, and recovery. Ideal for professionals seeking clean, effective pre-workout support to maximize performance and maintain muscle health. ## Description Product Description Protein Metabolism* Muscle Maintenance* Arginine and citrulline are two amino acids that are integral to protein metabolism and utilization, as well as to the maintenance of muscle tissue.* Both are key intermediates in the urea cycle, where they participate in the detoxification of ammonia via the production of urea.* In addition, any arginine not converted to urea enters general circulation where it is distributed to various tissues and metabolized for other uses such as protein synthesis.* Natural color variation may occur in this product. Brand Story By NOW Foods Review: Arginine & Citrulline - I’ve been using NOW Foods Arginine & Citrulline 500 mg / 250 mg for a few weeks now, and I’m really impressed with the results. The capsules are easy to swallow and don’t have any weird taste or smell. I mainly take it before workouts, and I’ve noticed better blood flow and endurance. My workouts feel more effective, and I get a nice “pump” without feeling jittery or overstimulated. I also like that this supplement combines both L-Arginine (500 mg) and L-Citrulline (250 mg) in one formula, which are known to support circulation and nitric oxide production. It’s a convenient way to get both without having to buy separate products. Hoojan Another plus is the quality—this brand is reliable, and the product feels clean and well-made. No side effects for me so far, and it fits easily into my daily routine. Overall, great value for the price and does exactly what it’s supposed to do. I would definitely recommend it to anyone looking to support workout performance and circulation. Review: NOW Sports Nutrition Arginine & Citrulline – Solid Amino Acid Support - I’ve been using the NOW Sports Nutrition Arginine & Citrulline capsules (500 mg / 250 mg) regularly, and they provide good support for my workouts and recovery. The combination of these amino acids seems to help with blood flow and muscle endurance. The capsules are easy to swallow and vegan-friendly, which I appreciate. The 120 count gives good value and lasts a while. If you want a reliable arginine and citrulline supplement to boost performance and recovery, this is a solid option. ## Features - NOW Sports products are comprehensively tested so you can trust that our products are pure and effective for every level of athletics - PROTEIN METABOLISM*: Arginine and citrulline are two amino acids that are integral to protein metabolism and utilization, as well as to the maintenance of muscle tissue* - NITRIC OXIDE PRECUSOR*/PRE-WORKOUT SUPPLEMENT: Take one capsule up to twice a day, preferably before working out - GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation) - Founded in 1968 by Elwood Richard, NOW is one of the largest independent, family- and employee-owned manufacturers of natural products ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B002609QQG | | Age Range Description | Adult | | Allergen Information | Corn-Free, Dairy Free, Egg Free, Non-GMO, Nut Free, Soy Free | | Best Sellers Rank | #36,385 in Health & Household ( See Top 100 in Health & Household ) #35 in L-Arginine Nutritional Supplements #2,366 in Sales & Deals | | Brand | NOW Foods | | Brand Name | NOW Foods | | Color | Off White | | Container Type | Bottle | | Customer Reviews | 4.5 out of 5 stars 3,631 Reviews | | Diet Type | Kosher, Vegan, Vegetarian | | Dosage Form | Capsule | | Flavor | Unflavored | | Global Trade Identification Number | 00733739000378 | | Item Dimensions | 2.7 x 2.7 x 4.75 inches | | Item Form | Capsule | | Item Nype Name | Diet & Weight Management | | Item Weight | 0.35 Pounds | | Manufacturer | NOW | | Manufacturer Part Number | 37 | | Material Features | Natural | | Model Name | Arginine & Citrulline 500 mg/ 250 mg, Amino Acids | | Model Number | 0037 | | Number of Items | 1 | | Primary Supplement Type | protein | | Product Benefits | Muscle Growth | | Specific Uses For Product | Amino Acid | | Total Servings Per Container | 120 | | UPC | 733739000378 | | Unit Count | 120 Count | ## Product Details - **Age Range (Description):** Adult - **Brand:** NOW Foods - **Diet Type:** Kosher, Vegan, Vegetarian - **Flavor:** Unflavored - **Item Form:** Capsule - **Item Weight:** 5.6 ounces - **Item dimensions L x W x H:** 2.7 x 2.7 x 4.75 inches - **Primary Supplement Type:** protein - **Product Benefits:** Muscle Growth - **Unit Count:** 120 Count ## Images ![NOW Sports, Arginine & Citrulline 500 mg/ 250 mg, Amino Acids, 120 Veg Caps - Image 1](https://m.media-amazon.com/images/I/718zH+AHuHL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Is it vegan?** A: I just spoke with their nutrition department at the manufacturing plant in Bloomingdale, IL, and the arginine is derived from feathers and is thus NOT vegan. I am bummed as I had been using this product for some time now. Ajimoto/Ajipure pharmaceutical-grade amino acids are however vegan. Hope this helps someone. **Q: Does this product conflict with Lisinopril?** A: Not sure but I did read something. I think it was on webmd. **Q: What does free form L Arginine and L citrulline mean?** A: Free-form amino acids refer to single amino acids that are already in a pre-digested form and ready to be used by your body. Some nutritional products, especially amino acid blends, contain whole proteins and large peptides (chains of amino acids), which the body must first break down into smaller peptides and individual amino acids before use. For faster utilization and better bioavailability, look for free-form amino acids. **Q: What is the prop 65 warning about ?** A: The California Prop 65 warning may inadvertently appear on the product page. This warning does not apply to this product and can be ignored, it is no longer live on this product page upon checking. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Arginine & Citrulline *by V***Z on March 20, 2026* I’ve been using NOW Foods Arginine & Citrulline 500 mg / 250 mg for a few weeks now, and I’m really impressed with the results. The capsules are easy to swallow and don’t have any weird taste or smell. I mainly take it before workouts, and I’ve noticed better blood flow and endurance. My workouts feel more effective, and I get a nice “pump” without feeling jittery or overstimulated. I also like that this supplement combines both L-Arginine (500 mg) and L-Citrulline (250 mg) in one formula, which are known to support circulation and nitric oxide production. It’s a convenient way to get both without having to buy separate products. Hoojan Another plus is the quality—this brand is reliable, and the product feels clean and well-made. No side effects for me so far, and it fits easily into my daily routine. Overall, great value for the price and does exactly what it’s supposed to do. I would definitely recommend it to anyone looking to support workout performance and circulation. ### ⭐⭐⭐⭐⭐ NOW Sports Nutrition Arginine & Citrulline – Solid Amino Acid Support *by K***Z on May 29, 2025* I’ve been using the NOW Sports Nutrition Arginine & Citrulline capsules (500 mg / 250 mg) regularly, and they provide good support for my workouts and recovery. The combination of these amino acids seems to help with blood flow and muscle endurance. The capsules are easy to swallow and vegan-friendly, which I appreciate. The 120 count gives good value and lasts a while. If you want a reliable arginine and citrulline supplement to boost performance and recovery, this is a solid option. ### ⭐⭐⭐⭐ No Biochemist but I'll reorder this *by R***D on September 3, 2013* I'm no supplement expert, but I know that a good bit of the industry as a whole does little to warrant the price tag. I'm also no athlete and its a effort on my part to get in my 4 workouts per week. I had lost vigor in my workouts and recovery was taking longer from them where the soreness would linger longer than what I was used to. I already used a quality protein mix so I ruled that out as a possible culprit, and then to top it off, sex had become "ok". A visit to my Dr came up with nothing to worry about, so I lurked on some body builder forums and found some suggestions for people who had similar complaints and took note of a couple recurring supplement suggestions. I started off with Arginine and Citrulline and gave it a good 30 days use before posting a review. I can't give the hard core types detailed results to judge buying, but what I can say is that lingering soreness faded after around 2 weeks, to a level a little better than before, I actually got stronger and was able to maintain vigor with my workouts from start to finish, and sex got a serious charge again. That may be due to exercise being back to my pre-slump levels, but either way what I cherished was the vigor and recovery gains I got since starting to use this and it'll stay a staple of the smallish supplement rack I keep. ## Frequently Bought Together - NOW Sports Nutrition, Arginine & Citrulline 500 mg/ 250 mg, Amino Acids, 120 Veg Capsules - NOW Foods Sports Nutrition, ZMA (Zinc, Magnesium and Vitamin B-6), Enhanced Absorption, Sports Recovery*, 180 Capsules --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/2588276-now-sports-arginine-and-citrulline-500-mg-250-mg-amino](https://www.desertcart.us/products/2588276-now-sports-arginine-and-citrulline-500-mg-250-mg-amino) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-12*