Possible Clues:

• Foxglove
• Drug from foxgloves
• Unearth, tails wagging, one hiding in the plant
• Number on Ali's drug
• Plant of the foxglove genus of the same name
• From which one could imply that old-fashioned TV isn't a drug?
• Start to get 15 down out of the ground (9)
• Medicinal cardiac stimulant
• Foxglove drug
• Cardiac stimulant obtained from the foxglove