If you have followed the steps to edit and delete tasks here but cannot see the buttons to change your medication or task, then read on.
If you don't find the 'Edit' or 'Delete' buttons, this is most likely because you're seeing your schedule in 'Calendar view'. If you change your schedule view by using the toggle highlighted below, you'll be able to edit/delete this medication task.
Note: some changes are not possible to do under Edit, so you'll have to Delete the task and add a new one.