I started there a month and I feel the effects of fatigue and especially hair loss ... it is not the first time I use spirulina ... ecocert the label is a guarantee trust ... The lid is easy to open, however, and something smells fishy ... but what the effects are there ... I continue the cure for a month is too short ... careful because at first it may give slight stomach cramps, so start with a tablet for a week, then increase to one tablet each week up to get to 8 or 10 a day.