I was on elevit for about 12 months and then found out it didn't contain iodine which is essential for healthy brain development in bubs so switched to blackmores gold which has iodine about 3 months before falling preg.
My obstetrician asked me the other day which multi I was taking and he said definately blackmores is the one to take, it has everything you need in it.
But any pregnancy multi is better than none
If you like elevit maybe you could use iodised salt in your cooking to get the iodine