Goji Berries: Health Benefits and Side Effects http://www.webmd.com/diet/goji-berries-health-benefits-and-side-effects ......
Do Goji Berries Have Side Effects?
Goji berries could interact with some drugs. If you take warfarin (a blood thinner), you may want to avoid goji berries. Goji berries may also interact with diabetes drugs and blood pressure drugs, so talk with your doctor first.
Otherwise, it's probably safe to eat goji berries in moderation.
Before taking diet supplements, let your doctor know.