You'll need to see what works for you. SJW didn't have any side effects for me that were troublesome. It did have a sedative effect, most particularly when combined with other herbs with sedative effects. I also used a tea with a little bit of "calming herbs" such as valerian, chamomile, & passionflower. Before starting SJW, I could take the other tea in the middle of the day. On SJW, it would knock me out whenever I tried it. So I had to be careful about that and my timing, but it was actually handy as I was having a terrible time with insomnia too.

Another caution with SJW is that it can decrease the effectiveness of birth control. If that is a concern, it should be kept in mind.

If you weren't bothered by side effects before though, you would probably be fine with SJW.