{"product_id":"l-arginine-capsules","title":"Osterly Market L-Arginine – Nitric Oxide Precursor","description":"\u003cp class=\"osm-front\"\u003e\u003cstrong\u003eL-arginine, single ingredient.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe amino acid your body converts to nitric oxide, sold as the amino acid it is.\u003c\/p\u003e\u003ch4\u003eWhat it's for\u003c\/h4\u003e\u003cp\u003eL-arginine is a precursor to nitric oxide, which relaxes blood vessel walls and increases blood flow. It is taken for circulation and for exercise pump. Worth knowing: oral arginine is heavily broken down in the gut and liver before it reaches circulation, which is why citrulline — which converts to arginine after that first pass — often outperforms it in trials.\u003c\/p\u003e\u003ch4\u003eHow to take it\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTake on an empty stomach, around thirty to sixty minutes before exercise if using it for that\u003c\/li\u003e\n\u003cli\u003eFood, particularly protein, competes with its absorption\u003c\/li\u003e\n\u003cli\u003eCan cause stomach upset and loose stools at higher doses\u003c\/li\u003e\n\u003cli\u003eDo not combine with ED medication or nitrates without medical advice — both work on the same pathway and the combination can drop blood pressure\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn the label\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePure L-arginine, 100 capsules\u003c\/li\u003e\n\u003cli\u003eSingle ingredient, no stimulant stack\u003c\/li\u003e\n\u003cli\u003eNitric oxide precursor\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eWhat this is not\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNot citrulline, which absorbs better for the same purpose\u003c\/li\u003e\n\u003cli\u003eNot a stimulant\u003c\/li\u003e\n\u003cli\u003eNot to be stacked with nitrate medication\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eThe straight answer\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eOn the label:\u003c\/strong\u003e the bottle is branded \"Rock Solid\" and the supplier markets it for sexual performance. The contents are plain L-arginine. If you want the better-absorbed option for circulation, citrulline is the one the research favours.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003csmall\u003eFree shipping on every order, no minimum. Questions or a complaint about shipping or a product? Email us and a person will answer.\u003c\/small\u003e\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eThese statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. Talk to your doctor before starting any supplement, especially if you are pregnant, nursing, or taking prescription medication.\u003c\/small\u003e\u003c\/p\u003e","brand":"Osterly Market","offers":[{"title":"100 capsules","offer_id":49622545006819,"sku":"OSM-25-1","price":15.99,"currency_code":"USD","in_stock":true},{"title":"2 bottles","offer_id":49622545039587,"sku":"OSM-25-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"3 bottles","offer_id":49622545072355,"sku":"OSM-25-3","price":37.99,"currency_code":"USD","in_stock":true},{"title":"5 bottles","offer_id":49622545105123,"sku":"OSM-25-4","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0815\/0096\/3043\/files\/Screenshot_2026-08-28_000155_ab327f50-6e8f-4ff0-918f-871099e9a12e.png?v=1787892913","url":"https:\/\/osterly.us\/products\/l-arginine-capsules","provider":"Osterly Market","version":"1.0","type":"link"}