Yes, you can take too much vitamin E. High doses of vitamin E have been associated with bleeding, stroke, and increased mortality.

Here are the common signs and symptoms of Vitamin E deficiency. Low immunity: Immune cells may be inhibited by Vitamin E deficiency. According to studies, elders may require more Vitamin E since ageing causes changes in the immune system.

若口服過量維生素e可能會不安全，尤其是有心臟病或糖尿病的病症，一天不要使用超過400國際單位以上的維生素e；有些研究指出高劑量的維生素e可能會增加死亡機率及引發其他嚴重副作用；劑量愈高，發生嚴重副作用的風險就愈高。

Symptoms of vitamin-E deficiency include muscle weakness, difficulty in walking, loss of muscle mass, vision problems and abnormal eye movement. Diagnosis of vitamin-E deficiency depends on its symptoms.

Vitamin E helps decrease brain fog, ... a high intake can increase the risk of symptoms. Some evidence indicates that men with or at risk for prostate cancer should avoid taking vitamin E supplements. Common vitamin E side effects may include fatigue, nausea, headaches, rash, stomach cramps, or blurred vision in rare instances. ...