Trusted Seller

Our Recommended Supplier

We only recommend suppliers who we believe have the highest quality control practices and excellent customer service. 

These companies don’t just tell us they care about quality, they spell out every step of their practice from the moment they receive raw materials, conduct third party testing and analysis, and on to the final review and release of the product for sale. 

Our #1 choice supplier is SCIENCE.BIO

Use the code GOODBRAINGUIDE10 to enjoy 10% off (this is the biggest discount code you can get – guaranteed). 

Read our article on – The best discount code from – guaranteed. 


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