Jarrow Formulas Arginine-Citrulline Sustain supplement supports vascular health through sustained release of L arginine and L citrulline, helping you maintain steady blood flow and improved daily performance. The sustained release delivery stretches the benefit across the day, supporting prolonged nitric oxide production. Jarrow Formulas has a long standing commitment to science and quality, delivering superior science in dietary supplements.

Available Sizes & Variants:

120 tablets - daily dosing for a month

Benefits & Features:

• Supports steady nitric oxide production for smoother blood flow.
• Sustained release delivers L arginine and L citrulline gradually across the day, supporting prolonged activity of nitric oxide.
• The star ingredients, L arginine and L citrulline, work together to boost nitric oxide and vascular health.
• Includes vitamin C as calcium ascorbate to support antioxidant protection during training.
• Designed for daily use to support ongoing vascular health throughout the day.

Jarrow Formulas Arginine-Citrulline Sustain fits a science led family of supplements built on careful ingredient sourcing. The sustained release keeps nitric oxide production steady for longer, which many active people appreciate. All ingredients are crafted with allergen controls, underscoring the brand's commitment to safe, reliable products. The company is known for superior science and rigorous quality standards. Many customers stack it with creatine or protein powder in their training routines, and the product complements a balanced health plan, including vitamin d supplement use.

Cellulose, Silicon Dioxide, Magnesium Stearate (Vegetable Source) and a Food-Grade Coating

• GTIN: 790011290728
• Manufacturer: Jarrow Formulas
• Categories: Arginine SupplementsBest SellersCitrulline SupplementsJarrow FormulasNitric Oxide Boosters SupplementsStamina & Endurance Supplements
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Take 2 tablets 1 to 2 times per day on an empty stomach prior to meals, or as directed by your qualified healthcare professional. Store in a cool, dry place. Warning: If you have a medical condition, are taking any medication, are pregnant or breastfeeding, you should always seek the advice of a qualified healthcare professional before taking any dietary supplement.

Please consult the product packaging for accurate instructions on how to use the product.

The Active Ingredient Is: L-Arginine (Free Base)

L-Arginine is an amino acid that contributes to the body’s production of nitric oxide, a molecule involved in normal vascular function. This ingredient is provided in its free base form within the formula. This formula also has included L-citrulline, which supports sustained nitric oxide production alongside L-arginine.

What Does L-Arginine Do?

L-Arginine assists with nitric oxide synthesis, which participates in maintaining normal blood flow and vessel function. It supports circulation and vascular health as part of everyday vitality.

This product is not intended to diagnose, treat, cure, or prevent any disease.

Vitamin C Calcium Ascorbate: 10 mg, L-ArginineFree Base: 500 mg, L-CitrullineFree Base: 500 mg

Jarrow Formulas is Welzo selected for this supplement due to a proven commitment to scientific rigour and manufacturing excellence. This brand is known in the industry for leveraging scientific expertise and supporting ingredient efficacy, which aligns with our goal to partner with suppliers who prioritise evidence-led development. Their approach to producing allergen-managed products—manufacturing without common allergens such as wheat, gluten, soy, and dairy—demonstrates a thoughtful quality culture that resonates with our safety standards. This brand’s heritage as a dedicated formulator of targeted amino acid blends further reinforces why Arginine-Citrulline Sustain is a strong fit for our line.

The product benefits from Jarrow Formulas’ sustained-release delivery, designed to provide amino acids gradually over approximately 8 hours, supporting prolonged nitric oxide production. This aligns with Welzo’s emphasis on consistent quality and product integrity. Our medical team reviews such formulations to ensure alignment with our standards, and we rely on our quality resources to validate ingredient quality and certifications as part of the evaluation process. This brand stands out for reliability, transparency, and a clear focus on high-purity inputs, which benefits customers seeking dependable support for daily vascular health needs. our medical team and how we verify ingredient quality.