Good Day. Im From South Africa And Have A Question

Good day. Im from south africa and have a question about Nido 1+ that retails in SA. My son is now 1 year and 3months old and since feb 2016 last 2 months he is on Nido 1+ which currently there is no problems at all though just need confirmation that its ok and safe on the stomach, teeth, body and does it supply all the nutritional value the body needs? as ive been told that its a supplementory and teeth yellows after a 5 months onward. so basically is it good or bad for my baby at just over 1 year old to be given Nido 1+?