Are wormwood capsules a safe, alternative medicine?

NO!!! Most herbal medicines are quite safe but wormwood is not one of them! there are several varieties of wormwood, but this usually refers to artemesia absinthium. It has a long history of folk use for treating worms, dyspepsia & fever but it has the potential to cause seizures, hallucinations, kidney failure & miscarriage. See www.Drugs.Com/npp/wormwood.Html & hit the tap button to see my comment:.
Wormwood. Also called green ginger, is found in mint tea in morocco. It has been used as antiseptic, antispasmodic, & antibacterial agent. As far as capsule forms, i cannot say for sure if the content is pure or what the constituents or additives are.