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L-Isoleucine Powder

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In stock

Price From: FROM $13.96

Ships tomorrow if ordered in the next 19 hours and 29 minutes!

L-Isoleucine Powder


  • Essential amino acid
  • Improves energy
  • Promotes athletic endurance
  • Taste

  • Mixability

L-Isoleucine is an essential amino acid that may improve energy and endurance.


Serving Size & Timing

This supplement is suggested to be taken in servings between 1000-2000mg to be consumed three times per day. It is also important to remember to take proportional elements of the other BCAAs as mentioned above. If taking one, it is necessary to take the rest.



This supplement is considered pharmaceutical grade and has no fillers of any kind.


Those who have had kidney or liver problems in the past are cautioned from taking this supplement, as are women who are pregnant or nursing. However, as long as suggested serving sizes are adhered to, it should be safe for anyone else to take.


L-Isoleucine has a bit of a bitter taste, and it is best to mix with a protein shake (as it is not very soluble in water). It should be stored in an area that is free from light, heat and moisture.

California residents: Click here for Proposition 65 warning.

Customer Reviews

Great product
I makes Makes this with my protein shake What a great pump. I use all 3 Leucine, valine,l-lsoleucine What a great combination Will buy from Bulk supplement Again good service fast delivery was at my door 4 days after ordering Thank you*

On 4/5/2019 Angel said...

As i have tried other products before Bulk suppliments has given me a free of burn amino acid.
I have been Burned in my mouth and body from other supplements claiming to be isoleucine, in conjunction, the products may very well have been a form of isoleucine. Bulk supplements has given me a standard that is far greater in appeal than any other supplement I have tried.*

On 8/16/2018 Taylor said...

Great product
I use it to make my own BCAA blend with no fillers. very pure and a great price!*

On 6/6/2018 Holly said...

I love this product. It really pumps up my energy and focus before my workout. A nice product without all of the extra stuff in pre-workouts. Will continue to purchase this.*

On 5/31/2017 Jenna said...

Bcaa Mix
I use it in my Bcaa mix and love it. Great I isoleucine very good taste.*

On 12/14/2016 David said...

review I-isoleucine
a excellent product to build muscle. Would recommend on getting this aswell as valine and leucine...*

On 4/25/2016 Nick said...

The products from Bulk Supplements are shipped and arrive quickly. Order at the beginning of the week and they arrive by the end of the week.
I have been extremely happy with every product I have purchased through Bulk Supplements. My local supplement shop has lost a customer, because of Bulk Supplements.*

On 4/17/2016 Donna said...

i bought leucine, isoleucine and valine to take together. Works better than any other pill product I've ever tried. I will buy from bulk supplements many more times. *

On 6/14/2015 john said...

A must for bodybuilding or just want to build muscle ,taken with l- valine ,l-leucine and your pre-workout, makes for a great workout drink*

On 4/25/2015 terry said...

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