Agmatine Sulfate Capsules | 550mg | 90 Count

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  • Agmatine Sulfate Capsules | 550mg  | 90 Count
  • Agmatine Sulfate Capsules | 550mg  | 90 Count
  • Agmatine Sulfate Capsules | 550mg  | 90 Count


Hard Rhino Agmatine Sulfate capsules contain pure form powder with no excipients or fillers packaged inside a vegetarian cellulose capsule.

Agmatine is a byproduct of Arginine that is produced through a process called decarboxylation. It is basically Arginine with the carboxylic acid end removed. Agmatine is thought to act as a neurotransmitter, a chemical that modulates the activity of cells in your brain, and is also an intermediate product in the synthesis of polyamines, an important chemical for cell growth. Agmatine can also help regulate the production of NO from arginine by inhibiting the enzyme synthetase in the body. The uptake of agmatine effects arginine in NO synthesis and blood vessel dilation which is usually limited naturally by your body.

Directions & Allergens

Suggested Use: 

As a dietary supplement, take one serving (1 capsule). Taken once in the morning on an empty stomach and/or again one hour prior to workout for best results.

Other Ingredients:

Vegetarian Cellulose (capsules).


This product contains no Soy, Dairy, Dairy byproducts, Eggs, Fish, Shellfish, Wheat, Gluten, Tree Nuts, or Sesame Seeds.


This is a NON-GMO ingredient manufactured using organic starting ingredients.


Store in a cool, dry place. Re-seal bottle immediately after use to preserve freshness.

Labels & Instant COA

90 Count:



Another Hard Rhino exclusive is the “Instant COA” (Certificate of Analysis). We are building a customer facing interface that will allow you to view product COA's on any mobile device. Simply scan the Quick Response (QR) code on the Hard Rhino product label and instantly view the lab reports.

Please note this is an ongoing effort. We produce hundreds of products and we keep COA’s, lab sheets, production reports and other internal records forever. It will take time to convert all of them. Meanwhile, for archived COA's please click here to request a copy.



Statements & Warnings

† These statements have not been evaluated by the Food & Drug Administration. This product is not intended to diagnose, treat, cure or prevent any diseases.

Keep out of the reach of children. Do not take this or any other supplement if under the age of 18, pregnant or nursing a baby, or if you have any known or suspected medical conditions and/or taking prescription drug(s) or OTC medication(s). Always consult with a qualified health physician before taking any new dietary supplement.

Meet Sade

Sade is one of our capsule checkers. She works almost every day including weekends and holidays. 24 hours a day, seven days a week. Her job is essential for ensuring every capsule we fill is the correct weight to within +/- 3mg. As part of our comprehensive quality processes, we check every capsule we fill.


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3 Reviews

  • 5
    excellent supplement

    Posted by Unknown on 23rd Aug 2014

    You ought to read about this on and try it out; it does a lot of stuff you're probably trying to address through other supps, and it may synergize with them as well. I found it interesting that it's used by bodybuilders, people trying to deal with pain, and nootropic brain hackers.

  • 4
    New to agmatine sulphate...

    Posted by Germain Giner on 12th Jun 2014

    I bought this primarily because of its reputation as an agonist for other pain relievers and its own analgesic effect. I have chronic injury related neck and shoulder pain, and am constantly on the hunt for relief that won't 'dumb me down'. So far, so good.

    In the short time I've been taking it, I am also getting some relief from neuropathic pain in both my right pinky and ring fingers as well as my right toes, artifacts of my neck injury. Previously, only Radiofrequency ablation has provided relief.

    I find it is a good anti-anxiety agent as well.

  • 5
    Great value and very pure

    Posted by D.R. on 14th Mar 2014

    Once again, Hardrhino knocks it out of the park. These capsules are packed with pure powder and very nicely jarred. And the price is better than anywhere else. Customer service told me they are rapidly expanding their capsule offerings and more powders will be encapsulated soon. I have been a long time customer and never been disappointed.

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