Martha
Both of my daughters and I experience mood fluctuations. I think it is due to the hormone changes that a girl's body goes through monthly. When I was a teen we just had to "shut up and bear through it". Now, I take St Johns Wort and both of my daughters do too. I did a "blind test".... meaning that I had good results but I didn't know if it was mind over matter... so I gave it to my youngest daughter without telling her what it was for. BETTER MOODS... NO MOOD SWINGS!! A blessing for teen girls with hormonal mood swings. TRY IT!! I think that the key is getting a good, reliable brand, not just going for the cheapest product that you can find. Check with your health food store manager. Luck