I use SAMe an herbal *mood booster* that is OTC, accidently
used it while having grapefruit juice around.
I felt like it boosted the serotonin effects of the herbal, it gave me a sensation of anxiety, palpitations & seemed to *raise* my BP.
So this article should have included OTC herbals since many of them increase serotonin & would be boosted by the juice.