I have been using it for quite some time. The brand I use is BioPure - 100% Organic Chlorella - Pyrenoidosa - grown in ionized oxygenated water.
The package says it is a pure green single cell fresh water algae grown in a strictly controlled ozonated and fresh water environment. The cell wall is ruptured by a new, unique and patented Pressure-Release process that preserves the cells biological contents (peptides, vitamins, chlorophyll, fatty acids, biological sugars...). This technique prevents the exposure to environmental toxins and contaminants whilst at the same time oxygenating the bio-available ingredients for maximum effectiveness.
Grown in a ridgidly controlled, monitored and radiation free environment.
Post Edited (Summersun) : 1/13/2015 5:57:23 PM (GMT-7)