Can be toxic
Fat soluble vitamins can be toxic when overdosed.
That includes a, e, d, and k. Overdose can cause problems with skin, hair, bones, liver function, and blood pressure in the brain. Hair can fall out, headaches can occur, and if pregnant, toxicity can case birth defects in the infant. Be very carefully with all fat soluble vitamins. If you have concerns about your levels, talk to your doctor.