Erm, pretty dodgy advice there from the GP! You can see the logic of some of it, but practically not very BF aware. Don't use the lanolin unless you think it's working for you (you won't of course). If you've any more meds questions, the breastfeeding network drugs in breastmilk service has a facebook page! You can message them through there, it's pretty fast.
cheering you on til Sunday.