I don't know that particular brand, but any side effects may be down to what sweetener is used. Some cause laxative or gastric effects especially if eaten in quantity.
Soem schools of thought believe that eating anything sweet flavoured may trigger addiction s and cravings.
As with most food, best you try and test your bg to measure your levels a dn then look out for and monitor any other effects.
I do have 1 or 2 sugar free sweets on a long car journey. Once I had a whole small packet and had wind, bloating and then diarrhoea. Only did that the once!