What Are The Side Effects Of Green Tea? Green tea is a natural product, and may even be purchased as organically grown. Under normal circumstances, there shouldn't be any additives added to the tea (if there are, time to switch brands!). While there might not be any serious or problematic side effects with drinking this tea, there are still a couple of issues you should be aware of if you decide to incorporate green tea into your diet...... Similar Editorial : CLUTTERS SIDE EFFECTS by Stephanie Roberts. | Source : Caffeine