Achc_Acidum Hydrocyanicum is a homeopathic medicine that uses a highly diluted form of hydrocyanic acid. It is commonly used to treat respiratory issues such as coughs and asthma, as well as digestive problems like nausea and vomiting. This medicine is also said to aid in the treatment of anxiety and panic attacks. Achc_Acidum Hydrocyanicum is safe and non-toxic when used as directed by a licensed homeopathic practitioner.