... back that 1 tablet is the equivalent to 1350-2700mg of st johns wort. I'm confused as its a one a day tablet but online everyone seems to say you should take 450mg 2 times a day for good results? But if I did that with these tablets would that mean I am well over the 1000mg mark because they say that 1 tablet is the same as over 2000mg? The brand is Kia LowMood if that makes any difference. Also is there any evidence to suggest that SJW stops your periods because I am taking them mainly for PMS and the symptoms have subsided but I have taken medication before that made my periods disappear and it did not agree with me