Does consume eggs and fish oil violate the first precept? Technically egg is a singular cell. it doesn't feel pain.So does break egg violate the first precept?

Most often doctor prescribe fish oil(cod liver oil) as a medicine for rejuvenate brain cells as it contain omega -3? Doses it violate first precept?
It does not unless the egg is alive. Eggs sold in supermarkets are usually unfertilized. Fish oil is not an animal.