I Have used st.johns wort all my young adult to mid age years now, and this product really helps me to keep in good spirits!!!! i rescently bought the GNC Brand of st. johns wort, and i feel better already!! i have been taking this for over 20 yrs, and it really helps to keep me smiling!! and mellow!! i would never recommend anyone to take doctors prescription for mood swings, dont!! buy a all natural st. johns wort and you will feel much better!! i guarantee it, it did it for me, only thing you will be sunburned easily so wear a high protection sun screen!! aloha marty