Caution: Every indication is that goji is safe to drink in moderation. However, there is one exception to that rule. Like some other natural products, it may have anti-coagulant activity. While this is generally desirable, it could lead to a dangerous situation for anyone who is taking the prescription medication Warfarin (Coumadin). One should therefore be careful about taking the two together, as this could lead to dangerous episodes of bleeding (Lam 2001).
