Which vitamins should not be taken with Cymbalta?

When taking Cymbalta (duloxetine), it's advisable to avoid high doses of vitamin B6 and St. John's Wort, as they may increase the risk of serotonin syndrome, a serious condition caused by excessive serotonin levels. Additionally, excessive intake of other supplements that affect serotonin, such as 5-HTP, should be approached with caution. Always consult with a healthcare provider before starting any new vitamins or supplements while on Cymbalta.