When my depression was mild, I took SJW for about a year and a half and it helped.

You have to get the right kind, a "standardized" extract with .3% Hypericin AND 3 to 4 % Hyperforin.

Hyperforin is now seen as the most active antidepressant part of the plant.

You have to take it for at least four weeks to really notice the benefits. That varies because some can notice in a matter of days but that's not very common.

Just a word of caution -
SJW can interfere with birth control pills and it should never be taken with any pescription ADs or sedatives.

Hope this helps.