My first baby was the only person either my husband or I are related to who has a tongue tie. It has been cut and then he breastfed no problems but I have looked into it and their are studies showing folic acid after 1st trimester increases the chance of tongue tie but there isn't enough evidence yet. We had to go back to hospital to get his tie cut and then he got a cold and got bronchiolitis so we ended up in hospital for several days with him struggling to breath. I spoke to my mum and MIL and the guidance in the 90s when they had children was only take the vitamins for 3 months and between them they had 5 healthy babies with no ties. Does anyone know if there is prenatal vitamins that exclude the folic acid - would obviously take it in 1st trimester though - as we are thinking of another baby and I don't want to do anything that might increase the risk of a tie. I don't want to avoid prenatals entirely after the 1st trimester as I get quite run down in pregnancy and got quite low in iron even with taking them!