Customer reviews of Cebria supplements are generally mixed as of 2015. Reviews on Amazon.com, Highya.com and ConsumerHealthDigest.com indicate that the product is helpful for some users but ineffective for others.
Cebria is a nutritional supplement that claims to improve the memory and brain function of users, according to Highya.com. Numerous customer reviews on this website indicate that the product has no discernible effect and that it is difficult to return products or obtain refunds from the company.
Some reviews of Cebria Ultra Blend on Amazon.com note that use of the product improved the user's ability to focus. Other reviews on the same website state that the product may cause side effects such as headaches and anxiety.