kosher for pesach Ricola cough drops?

are these ok for Pesach: Ricola natural herb cough drops: color(caramel), extract of a Ricola herb mixture (elder horshound) hyssop, lemon balm, linden flower, mallow, pepperments, sage, thyme, wild thyme,) starch syrup, sugar

Only the hard cough drops are ok for all for Pesach.
The “center-filled drops” may contain wheat.
Please be careful.