This article was sent to me by a supplier rep from a company that markets another brand of oregano oil products. The two oregano products used in the study are Oreganol P73 Extra Strength and Oregacyn both by North American Herb and Spice (NAHS). I have three NAHS oregano products in stock - OregaMax 90 caps, Oreganol Super Strength P73 120 caps; and Oreganol P73 Super Strength drops.