Nestle NAN OPTIPRO H.A. Stage 2 Follow-Up Baby Formula

Follow up milk for 6 until 1 yo. At the first  time i tried  this milk.. it's trigger more phlegm.. for few weeks consumed  this milk, my boy coughed few time after milk ( to clear the throat, not sick).. but after few weeks.. he was ok. He continue have  a happy tummy, drink and grow well. He didn't experience constipated and no allergic milk symptoms (rashes, upset tummy etc ) It works for him. Pro about this milk : - Dissolved very well and fast even in room temperature of water. - Sugar free Cons about this milk.. the taste was bad.. i can feel iron/blood  taste