[MargaretR]

Accyman - they are dock leaves.

Many 'modern' medicines are derived from research into the qualities of herbal remedies.
Old fashioned aspirin is a good example of that.
Unfortunately they synthesise the chemical elements involved, which can produce an adverse reaction as a side effect, and cause another medical problem, which needs yet another drug. So the downward spiral into being a prescription drug junkie happens.

By the term 'junkie' I mean the state where your life depends on taking them.
I was almost at that stage, but made a determined effort to find my way out --glad I did.