Qust al hindi (190 g)
There are mainly two types of Qust, Indian (Qust al Hindi) and Marine / Sea (Qust al Bahri)
Al-Qust Al-Bahri which is a white type of costus that was previously brought from India to the Arabian Peninsula by ship over the sea, and was therefore called sea costus
An-Nawawi said: "Doctors unanimously agreed in their books that seafood increases urine and menstrual flow, is beneficial to poison, improves sexual desire, kills worms ... etc." As to whether it should be mixed with black seeds for the purpose you mentioned in the question, this case could only be decided by persons who have experience in treating herbs.
There is another type of costus called the Indian costus that stands out in some of the characteristics of the sea costus. Ibn Al-Qayyim said in Zaad Al-Ma'aad, "There are two types of costumes: the white type called sea costume and the Indian costume with the hottest nature among them, while the white type is the mildest. Both types have many benefits. . "
Qust is hot and dry to a third degree and helps to dry out excess mucus, help relieve colds and flu and nasal congestion. Imam Ibn Al Qayyim said that drinking an infusion of Qust helps to strengthen the liver and helps relieve indigestion, weakness in the stomach, and if used as an ointment, it relieves back pain or rheumatic pain in the lower back.
Sea / Marine Qust is slightly paler in color and also milder in taste and more suitable for administration to children