Collection: L-Arginine

What Is L-Arginine?

L-arginine is an amino acid that the body uses to produce nitric oxide (NO), a molecule that helps support healthy blood flow by relaxing blood vessels. It is considered “conditionally essential,” meaning the body can produce it, but needs may increase during periods of growth, stress or intense physical activity. L-arginine is found in protein-rich foods such as meat, fish, dairy, nuts, seeds and legumes. In dietary supplements, L-arginine is available as capsules, tablets and powders, and it is commonly used in sports nutrition and circulation-support formulas.

Benefits of L-Arginine Supplements

L-arginine is widely used to support circulation and exercise performance. By supporting nitric oxide production, it may help promote better blood flow during workouts, which is why it is often included in pre-workout products. Many people use L-arginine to support endurance, “pump” and recovery as part of their training routine. It is also used in cardiovascular wellness routines to support normal circulation. Individual results can vary, and the best outcomes usually come from consistent training, balanced nutrition and healthy lifestyle habits.

Uses of L-Arginine

L-arginine supplements are typically taken daily or before workouts, following the dosage instructions on the label. Powders are popular for flexible dosing, while capsules and tablets are convenient for travel. L-arginine is often combined with other performance ingredients such as citrulline, creatine or electrolytes. Some users take it on an empty stomach for better absorption, depending on tolerance. On our category page you can explore different L-arginine products – from pure powders to combined pre-workout blends – and choose the option that matches your goals.

L-Arginine: Side Effects and Safety

L-arginine is generally well tolerated when used as directed, but side effects can occur in some individuals. Possible effects include stomach upset, diarrhea, nausea or bloating, especially at higher doses. Because L-arginine can affect blood pressure and circulation, people taking blood pressure medications, nitrates, or those with heart conditions should consult a healthcare professional before use. L-arginine may also not be suitable for people with herpes outbreaks, as arginine can influence viral activity in some cases. Pregnant and breastfeeding women and people taking prescription medicines should seek medical advice before using L-arginine supplements.

Where to Buy L-Arginine in Estonia?

In Estonia, L-arginine supplements can be purchased from our e-shop fits.ee.