Never heard of this herb but it does sound interesting. They have a bag of extract power Artemisia Annue on Amazon for $39.95 but they have pill form also. Some people seem to use it for insomnia.
I could use something for insomnia right now.
Your grandparents probably knew and grew artemisia absinthium. I know mine were still using it well into the 40s for many of the same reasons despite the thujone hysteria. Ive grown some and experimented a bit. Warning, once this stuff gets out of the garden it grows everywhere because each stray plant spreads a bazillion (<-highly scientific and accurate number) seeds.