Today I received the following reply to my inquiry to Migros Customer Service regarding the availability of the sports syrup:
Thank you for your inquiry. Please excuse our late reply.
The M-Classic sports syrup you were looking for has been removed from the range due to a lack of demand. Unfortunately, we are unable to offer you a 1:1 alternative.
The normal lemon syrup and the Gatorade sports drink are still available.
We hope this information will help you and wish you a good day.
Unfortunately, the lemon syrup doesn't help me and the Gatorade liquid tastes disgustingly synthetic.
I think I saw the Hunziker company in Dietikon (candy factory) on the bottle. I have sent a request for remaining stock or the same/similar product for other customers today.
What a shame, I really liked the refreshing, natural-tasting aroma and the ease of preparation, even directly in the drinking bag. I also enjoyed drinking this syrup with ice after sport.
Another plus: I didn't have to clean any undissolved powder residue from the drinking bag.
It's strange that none of the big names among the sports drink manufacturers offer anything similar.