Can you take to many vitamins? at the moment i take 2, 000mg vitamins c daily, omega 3(heard it helps memory) zinc and vitamin a(heard they helped acne

Not too many: You can't take too many vitamins- it is safe to take them all- thus the concept of a multivitamin. You can take too much of a particular one, but there is a wide margin of safety. What you are taking is safe, but doses of zinc above 60 mg/day may harm some. While it is safe to take 25, 000 units a day of vit. A it may be harmful to take more than 6, 000 a day in early pregnancy, so be cautious.