Why is Nestle Na Pro 2 formula milk tasting bitter

[bagel]

Hello,

Yesterday I bought the Nestle Nan Pro 2 formula for my baby and the milk is so bitter. Is this the way it is supposed to be?
Thank you for your insights!

 

[bagel]

I mean Nestle Nan Pro2....

 

[kit_kat]

Same here. I can't remember which Stage I bought, but it's the NaN product range. Even I can't accept the taste. I've switched to Nestl? Lactogen since.