Source Naturals LOrnithine helps quicker muscle recovery and ammonia detoxification because L-ornithine acts as a key precursor in energy metabolism, supported by Source Naturals' commitment to quality. This simple capsule slips easily into daily routines, and fits around your training schedule, whether you lift in the morning or late in the day. This product can form part of food supplements for vitamin b12 when included in a balanced plan, without altering the core option.

Available Sizes & Variants:

50 Capsules — Standard bottle size for daily use.

Benefits & Features:

• Supports quicker muscle recovery after workouts.
• Assists ammonia detoxification to help reduce fatigue and sustain performance, which helps you keep going.
• L-ornithine serves as a precursor to arginine and creatine, supporting energy metabolism [which helps energy flow].
• This supplement is designed for daily use and can be taken before training or at night to fit varied schedules and help maintain ongoing ammonia clearance, and it fits easily into your day.
• Free from yeast, dairy, egg, gluten, soy and wheat, sugar, preservatives or artificial colours.

Source Naturals has built a reputation for clear, single ingredient formulations that let the active component shine, and keeps things lean. L-ornithine is delivered in a simple gelatin capsule, with the rest of the formula kept lean to maximise absorption and consistency, and to help keep it straightforward. The product is free from yeast, dairy, egg, gluten, soy and wheat, sugar, preservatives or artificial colours or flavours, making it a straightforward option for athletes and those focused on recovery. For those exploring liver health supplements, this formulation complements a balanced approach, and people often look for benefits of lysine within their broader nutritional plan.

Other Ingredients - gelatin (capsule), silica, and magnesium stearate.
Free From - Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, preservatives, or artificial color, flavour or fragrance.

• GTIN: 21078016410
• Manufacturer: Source Naturals
• Categories: New ArrivalsOrnithine SupplementsSource Naturals
• 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.

Consume 1 to 3 capsules once or twice daily. Take prior to exercise or before sleep with ample water.

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

The Active Ingredient Is: L-ornithine (as L-ornithine hydrochloride)

L-ornithine is an amino acid that participates in normal urea cycle function, helping convert ammonia into urea for excretion and supporting energy metabolism pathways.

This form uses free-form L-ornithine hydrochloride, a stable presentation of the amino acid suitable for supplementation.

What Does L-ornithine Do?

L-ornithine is involved in ammonia detoxification and is a precursor to arginine and creatine, contributing to energy utilisation and muscle recovery processes in the body.

In physiological terms, it supports normal energy metabolism and the body’s capacity to manage protein-derived waste products during exercise and recovery.

Dietary supplements are not a replacement for a balanced diet. Do not take more than the recommended amount. Keep in a cool, dry area away from light and heat. Ensure they are out of children's reach and view.

Source Naturals LOrnithine is Welzo Selected because the brand provides a focused, single‑ingredient approach to amino metabolism, with L‑ornithine playing a central role in the urea cycle. This supports efficient ammonia clearance and aligns with the product’s purpose of aiding muscle recovery and energy metabolism as a precursor to arginine and creatine.

Source Naturals is the manufacturer behind this dedicated formulation, and the product design uses a straightforward capsule format that fits easily into daily routines. Our team evaluates each brand with a rigorous approach, ensuring the supplier meets Welzo’s standards for safety, potency, and product integrity. This is reflected in the care taken to offer a clean profile that excludes unnecessary additives, helping consumers focus on what matters most for this supplement category.

Welzo’s medical team reviews each partner for compliance with the standards we enforce, while ongoing quality assessment is supported by our internal experts who keep the approach practical and science‑driven. This combination of product design and disciplined evaluation led to endorsing Source Naturals LOrnithine for this category. For more on our team, see Welzo's healthcare professionals.