Yeah mucus all around the sinus area causing sinus like symptoms withing 2-3 days of eating it. It’s addictive because it contains too much caffeine. Replaced my morning coffee with it when I was trying to quit coffee. It did help (with strong determination Offcourse) as now I don’t require a large strong cup of coffee the first thing in the morning. Only tea after breakfast which is not too strong and sometimes not even that.
But those days when I ate it first thing in the morning to replace coffee, within 2-3 days, it produced too much mucus which was too difficult to get rid of and went away very slowly. I noticed it always happened whenever I ate Nutella. So never eat it anymore.