I noticed that iherb sells the ancient egyptian herb myrrh as well as a tincture. There are sites that sell the resin but I think it is used as incense. Mirazid is the drug derived from the herb, which I couldn't find. I didn't look very hard either. But, the herb is easily attainable and it is worth a shot. There are fasciola and
schistosomia studies on pubmed with it. I'm not sure about side effects or if the herb is effective and at what dose, but I'm planning on trying it anyways.
David