Yes, vitamins are good for watery eyes, especially you should know that the important nutrition for eye health is vitamin B complex. For example when you find it difficult to stay outdoors, even if the sunlight is not too bright, you may be suffering from vitamin B deficiency. When you have suffered from vitamin b deficiency, you will lead to watery eyes. Besides, other symptoms related to a lack of one or more of the B vitamins are burning, blood-shot eyes, twilight blindness and having dark spots in your vision. So if you have the watery eyes, you should eat foods which contain many vitamins. So they relieve your water eyes.