L-leucine is an essential amino acid, meaning you must obtain it through diet because your body can't produce it. You can acquire L-leucine by eating meat, dairy products, eggs, soy and other beans, or by taking it as a supplement. Leucine has potential benefits for weight, lean muscle mass and cholesterol levels, although research is limited and conflicting, according to physician Ray Sahelian, who has a website devoted to natural supplements. Studies have mainly involved animals rather than humans. Consult a qualified health care provider before taking leucine supplements.

L-Leucine provides many benefits to the body. It is effective for maintaining blood sugar levels and also increases growth hormone production. L-Leucine combines with isoleucine and valine to protect and provide fuel to the muscles, and also helps to increase your endurance level and boost energy.

Other benefits of L-Leucine are the preservation of lean muscle mass. This amino acid helps preserve muscle tissue, so that it doesn't break down as quickly during the aging process. L-Leucine can also speed the recovery process for muscle damage and skin injuries.

1. Muscle Maintenance.
L-leucine, like other essential amino acids, helps maintain muscle mass. For this reason, many bodybuilders and athletes take leucine supplements.
2 .Weight Loss Benefits.
Exercise combined with leucine had stronger effects on weight loss than exercise alone.
3. As one of the three BCAA's, L-Leucine is essential to your basic health.
It has both athletic and medical applications.
4. L-Leucine maintains nitrogen balance.
and it has also been shown to enhance thinking abilities that can decline as physical activity becomes more intense
5. L-Leucine also works to heal bone, skin and muscle tissue.

COA : 

Xi'an Julong Bio-Tech Co., Ltd. is located in Xi'an City, Shaanxi Province, China. It is a biotechnology enterprise engaged in the research, development, production and sales of animal and plant extracts, cosmetics, pharmaceutical raw materials and intermediates. The company has complete experimental facilities. And advanced testing instruments ensure the stability of product quality from all aspects. The company has a complete sales service system, the products are exported to countries all over the world, and have won a good international reputation with excellent quality and excellent service.
The company has been adhering to the basic principles of "integrity, quality, service, and win-win" to serve customers, constantly strict requirements, set goals, and implement win-win development

Q1: Can i get some samples?
A: Yes, we can supply the free sample, but the shipping cost be paid by our customers.

Q2: How to start orders or make payments?
A: Proforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by T/T, or Paypal or Escrow(Alibaba).

Q3: How to confirm the Product Quality before placing orders?
A:You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.

Q4:What's your MOQ?
A:Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.

Q5: How about delivery leadtime?
A:Delivery lead time: About 3-5 days after payment confirmed. (Chinese holiday not included)

Q6:Is there a discount?
A:Different quantity has different discount.

Q7: How do you treat quality complaint?
A:First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss

1. All inquiries will be replied within 12 hours.

2. Dedication to quality, supply & service.

3. Strictly on selecting raw materials.

4. OEM/ODM Available.

5. Reasonable & competitive price, fast lead time.

6. Sample is available for your evaluation & Formulation development.

7. Faster delivery:Sample order in stock and 3-7 days for bulk production.

8.We have strong cooperation with DHL, TNT, UPS, FEDEX, EMS. Or you also can choose your own shipping forwarder

9. After-Sale Service:

1) International Authorized Third-Party Test For The Products You Demand.

2) 30 Days Warranty of quality of goods.