Is St John's Wort safe to take?

I have taken this in the past - before breast cancer - for the winter blues. I feel in the need of something now, but does anyone know if it is now safe for me to take? I am on tamoxifen.


I was told not to stop taking it on dx as it affects the effectiveness of tamoxifen and some chemo drugs too. Have you tried a light for SAD? Expensive but Christmas is coming, my SIL swears by hers (and my brother agrees!)

I have read somewhere on the internet that it is not safe to take with Tamoxifen. Personally I wouldn’t chance it

I was advised by my onc not to take it. I could certainly use it now as I have found it effective in the past, but not worth the risk now.

Hi all

The BCC ‘Tamoxifen’ publication contains information about St Johns Wort which you may find of interest, you can read or order this here:*/changeTemplate/PublicationDisplay/publicationId/124/

Best wishes

Thanks everyone, as usual there’s always someone who knows the answer. I’ve taken a look at the BCC publication that Lucy posted the link to, and it specifically states that St John’s Wort interferes with Tamoxifen and should not be taken.

I might consider looking into a SAD light if this continues after Christmas.

Road Runner, Think about a SAD light sooner, if you regularly get the winter blues, it can make a big difference for about £100 and half an hour or so in the mornings
Lavender Blue at times