QUALITY AND SIMPLICITY
Amino Z L-leucine is a pharmaceutical-grade amino acid product. It's considered one of the most important amino acids due to its role in muscle protein synthesis. Increasing protein synthesis creates an ideal environment for muscle cells to recover and grow. For this reason, L-Leucine is commonly used by bodybuilders and athletes who train with extremely high intensity.
What you can expect from Amino Z L-leucine
• Increase protein synthesis
• May promote lean muscle growth
• May accelerate recovery time between training sessions
• May prevent muscle breakdown (catabolism)
Below we have answered some commonly asked questions about this product.
What does the research show for l-leucine supplementation?
1. A study conducted in 2008 found that participants who consumed leucine-rich diets experienced higher levels of muscle protein synthesis when compared to the control group. 
2. A 2015 study found that participants that supplemented with 10g of leucine showed clinically significant increases in muscle strength within the lower extremities during the 12-week study 
 Drummond, Micah J., and Blake B. Rasmussen. "Leucine-enriched nutrients and the regulation of mTOR signalling and human skeletal muscle protein synthesis." Current opinion in clinical nutrition and metabolic care 11.3 (2008): 222.
 Trabal, Joan, et al. "Effects of free leucine supplementation and resistance training on muscle strength and functional status in older adults: a randomized controlled trial." Clinical interventions in aging 10 (2015): 713.
Which allergens are processed in the Amino Z manufacturing facility?
Milk, fish, tree nuts, gluten and peanuts.
Amino Z conducts thorough, regular and systematic cleaning and anti-cross contamination measures to ensure your product is safe to consume
Why is this product so much cheaper than similar products on the market?
Many other brands incur a high degree of costs associated with producing products. It is not uncommon for a product to be produced by a third-party manufacturer and then shipped (or imported) to a wholesaler. The wholesaler then sells to a retail store, who on-sells to the customer. The end result is that often four separate businesses are taking profits at each stage (the brand itself, the manufacturer, the wholesaler and the retailer).
We take a very different approach which allows us to keep our cost structure down and we pass those savings on to you, without sacrificing product quality.
We have our own purpose-built manufacturing plant located in Sydney Australia and we sell directly to you. This eliminates all additional parties from the process, thereby eliminating a lot of unnecessary costs.
The significant cost savings we incur allow us to invest into high quality ingredients while still offering a significantly cheaper final product.
I haven't tried this product before. What if I don't like it?
Because we manufacture this product ourselves, we believe that the onus is on us to produce a high quality product that you're going to love.
That's why we have our 110% Guarantee. Basically if you try it and you don't love it, just reach out to us. You can receive a 110% store credit, or a full refund.
Total Serves per Package: 200
Serving Size: 5.00000g
|Per 5g Serve
Mix 1 serve with 250mL of water and mix well with a shaker.
Please note that the nutritional profile will vary according to your flavour selection.
Processed in a facility that processes Fish, Gluten, Milk. These allergens may be present.
Formulated supplementary sports food. For use by healthy adults only. It is not recommended for persons under the age of 18. Do not use if pregnant or breastfeeding. Keep out of reach of children. Do not consume this product if you have a medical condition or are taking any prescription medicines. Do not exceed recommended serving. Consult a physician prior to use.
THIS PRODUCT IS NOT TO BE USED AS A SOLE SOURCE OF NUTRITION. IT MUST BE USED IN CONJUNCTION WITH A BALANCED DIET AND SUITABLE PHYSICAL TRAINING OR EXERCISE PROGRAM.
Product quality and transparency is at the heart of our values. Below you will find the independent third-party lab tests we have published relevant to this product.
Ingredient Lab TestsL-Leucine: Lab test date: 10/06/23
L-Leucine: Lab test date: 11/05/23
L-Leucine: Lab test date: 05/10/22
L-Leucine: Lab test date: 10/03/22
L-Leucine: Lab test date: 06/10/21
L-Leucine: Lab test date: 26/08/20
L-Leucine: Lab test date: 12/08/20
Our 110% guarantee is exactly that - if you're not completely happy with your product, let us know and we'll credit you back with 110% of the price that you paid for it (including any shipping cost incurred for the product).
This offer is valid on all Amino Z Supps and any other products marked with a "110% Guarantee" ribbon.
Even if you've opened it up! (How else will you know if you like it?)
Prefer a refund? No worries. If you're unhappy with your purchase, we'll refund you in full.
Valid within a month (30 days) of receiving your order. So we can continue to offer this to all customers, a "fair go" policy applies to prevent abuse and full details can be found in our Terms & Conditions section on this website.
100 Day Returns!
• Easy and hassle free
• You can return both opened and unopened product (see below for details)
For up to 100 days from the day that you place your order, you can take advantage of our returns, even if you just change your mind!
Please note, this policy does not relate to items that are damaged in transit, lost or incur an issue beyond your control. In situations like these, we will either refund, credit or send a replacement to you without delay. Our 100 day returns is for your peace of mind if you don't like the product, or simply change your mind.
For any unopened product, just ship the item back and we will refund or replace that item! You can obtain a refund, store credit or product exchange to the same value. Just let us know within 100 days from the date of your order.
For any opened product (Club Z members only), we understand that trying new supplements sometimes carries some uncertainty. Perhaps you’re not sure about a new flavour, or you just bought the wrong product. So if you're not happy with your purchase within 5 scoops (or 5 serves) and 30 days from the date of purchase, you can send it back for a full money-back guarantee! The purchase must have been made when you had an active Club Z membership.
Please note that if your item was purchased as an advertised discounted shortdated item, the above time frames are limited to 14 days. Shortdated items are heavily discounted items due to a sooner expiry date.
If however there was any issue in receiving your order (for example, if your order was lost or damaged in transit) - don't stress! Just contact us and we'll fix things up for you.
Simply contact us by email, phone, chat or visit us in-store to arrange a return. Our returns policy is subject to our standard terms and conditions.
Whenever a problem is incurred that is not your fault, we will be happy to arrange return shipping (if applicable) and the shipment of any replacement goods to you to avoid any further cost and inconvenience. All you need to do is contact us so we can jump on it as quickly as possible.
Here's what we will do in certain situations:
- Your item has been damaged/lost in transit (we'll replace it)
- Incorrect goods received (although rare, we'll ship off the correct item)
- A problem with the actual product or anything else (we'll do what is necessary to fix things for you!)
So we can fix things quickly for you, please let us know of any issues within 48 hours of receiving your goods. In certain situations we may ask for a photograph (for example if the product is damaged in transit, so we can take it up with the delivery company to avoid future issues).
If you do receive an incorrect product, please do not open the actual product so we can arrange a resolution quickly.
In a nutshell, we work really hard on keeping you happy. So if a problem arises, just contact us and we'll do our very best to fix it!