My son refuses to drink his milk bottle. he drinks about 4 bottles of rooibos tea a day. are there any bad effects? and what should i give him instead? he is 14 months.

Possibly: If he gets all his fluid needs from the tea he may have no thirst/reason to take a bottle. He should not be on a bottle at that age anyway all his fluids should come from a cup. If his diet otherwise provides a calcium source (main benefit of milk) he may be okay. I would cut back on the tea & offer water or milk. The water is so bland he may accept the milk.