NEW
🩸 L-Arginine
Cost per serving
$0.07
Cheap·−75%
amino · 13 active deals
The best-value L-Arginine right now is about $0.05 per dose — across 13 tracked products the median is $0.086/dose, so shopping on cost-per-dose can cut your cost several-fold. Every L-Arginine deal here is ranked by cost per dose— what you actually pay per serving, not the sticker price — because forms and absorption differ, so the cheapest bottle isn’t always the cheapest dose.
Right now the best value across our full L-Arginine catalog is at $0.05 per serving.
L-arginine is an amino acid that the body also synthesizes (from citrulline), mainly in the kidneys. Some experts suggest that taking arginine in supplement form may enhance exercise and athletic performance in several ways: some arginine is converted to nitric oxide, a vasodilator that can increase blood flow and the delivery of oxygen and nutrients to skeletal muscle, and this increased vasodilation may speed removal of metabolic waste products related to muscle fatigue. Arginine also serves as a precursor for creatine synthesis and may increase secretion of human growth hormone. However, the research to support supplemental arginine as a performance enhancer is limited and conflicting, and doses of 2–20 g/day appear to have little to no effect on anaerobic or aerobic exercise performance. One review of 54 clinical studies concluded that supplemental arginine provided little or no enhancement of athletic performance and did not improve recovery from exhaustion. Overall, arginine supplementation's ability to enhance strength, improve exercise or athletic performance, or promote muscular recovery after exercise has little scientific support. — per NIH Office of Dietary Supplements; not medical advice.
L-arginine is found in many protein-containing foods, especially animal products and nuts, and typical dietary intake is about 4–5 grams per day. — per NIH Office of Dietary Supplements; not medical advice.
Most study results suggest that up to 9 g/day of arginine for several days or weeks is safe and well tolerated. At doses of 9–30 g/day, the most commonly reported adverse reactions are gastrointestinal discomfort, such as diarrhea and nausea, and slightly reduced blood pressure. The safety of taking high-dose arginine supplements for more than 3 months is not known. — per NIH Office of Dietary Supplements; not medical advice.
Source: NIH Office of Dietary Supplements — L-Arginine fact sheet
Every L-Arginine deal above is ranked by real cost per dose with no paid placement — see our and .
Micro Ingredients L-Arginine 1000mg with MCT Oil at $0.05 — the lowest cost-per-dose l-arginine in our catalog. See the full ranking on the Best L-Arginine page.
We're tracking 13 active L-Arginine deals across Amazon US and partner retailers, ranked by community votes and cost-per-dose — not paid placement.
Across 13 tracked L-Arginine deals the median cost-per-dose is $0.086; the cheapest quartile comes in under $0.075 . Anything below the median is a solid deal for the same molecule.
Deals are submitted by the community and ranked by net votes (hot minus cold) plus cost-per-dose normalised across container sizes. We take no affiliate kickbacks for ordering; sponsored slots, when present, are clearly badged.
Most study results suggest that up to 9 g/day of arginine for several days or weeks is safe and well tolerated. At doses of 9–30 g/day, the most commonly reported adverse reactions are gastrointestinal discomfort, such as diarrhea and nausea, and slightly reduced blood pressure. The safety of taking high-dose arginine supplements for more than 3 months is not known. — per NIH Office of Dietary Supplements; not medical advice.
We link primary sources and paraphrase their findings — never copy their text, tables, or images. Cost-per-dose figures are our own first-party catalog data.
Cost per serving
$0.07
Cheap·−75%Cost per serving
$0.12
Avg90 servings · ~90-day supply
Cost per serving
$0.10
Avg·−40%200 servings · ~200-day supply
Cost per serving
$0.05
Cheap·−82%Cost per serving
$0.32
Pricey90 servings · ~90-day supply
Cost per serving
$0.07
Cheap·−77%250 servings · ~250-day supply
Cost per serving
$0.06
Cheap·−80%300 servings · ~300-day supply
Cost per serving
$0.09
Avg·−50%300 servings · ~300-day supply
Cost per serving
$0.11
Avg·−36%150 servings · ~150-day supply
Cost per serving
$0.09
Avg·−53%Cost per serving
$0.07
Avg·−74%120 servings · ~120-day supply
Cost per serving
$0.14
Pricey120 servings · ~120-day supply
Cost per serving
$0.20
Pricey50 servings · ~50-day supply
Amazon.com · 🩸 L-Arginine
CPS
Price
$17.89
Amazon.com · 🩸 L-Arginine
CPS
Price
$11.09
Amazon.com · 🩸 L-Arginine
CPS
Price
$20.25
Amazon.com · 🩸 L-Arginine
CPS
Price
$15.99
Amazon.com · 🩸 L-Arginine
CPS
Price
$29.00
Amazon.com · 🩸 L-Arginine
CPS
Price
$17.14
Amazon.com · 🩸 L-Arginine
CPS
Price
$17.95
Amazon.com · 🩸 L-Arginine
CPS
Price
$25.95
Amazon.com · 🩸 L-Arginine
CPS
Price
$15.95
Amazon.com · 🩸 L-Arginine
CPS
Price
$12.79
Amazon.com · 🩸 L-Arginine
CPS
Price
$8.99
Amazon.com · 🩸 L-Arginine
CPS
Price
$17.04
Amazon.com · 🩸 L-Arginine
CPS
Price
$9.95
L-arginine is found in many protein-containing foods, especially animal products and nuts, and typical dietary intake is about 4–5 grams per day. — per NIH Office of Dietary Supplements; not medical advice.
Dosage, upper-limit, deficiency, food-source and interaction facts are sourced from the NIH Office of Dietary Supplements L-Arginine fact sheet. General information, not medical advice.
240 servings · ~240-day supply
300 servings · ~300-day supply
150 servings · ~150-day supply
