The Blessings of the Black Seed.

The Black Cumin Seed (Nigella Sativa) is one of the most universally powerful medicines known to man. It is a small triangular seed from a flowering herb of the buttercup family, and also known as the Blessed Seed, Black Cumin [Bukhari], Habbatul Barakah or Kalonji. It has been known and cultivated for over two thousand years, including by the ancient Egyptians and Romans.

Abu Huraira (radhi Allahu anhu) narrated that God’s Messenger (sallallahu alayhi wasallam) said, "There is healing in black cumin for all diseases except death."

Sahih al Bukhari  Volume 7, Book 71, Number 592

Treatment from Hadith using 5/7 crushed black seeds.

It was narrated by Khalid bin Sad (radhi Allahu anhu), who said, "We went out and Ghalib bin Abjar (radhi Allahu anhu) was accompanying us. He fell ill on the way and when we arrived at Medina he was still sick. Ibn Abi 'Atiq (radhi Allahu anhu) came to visit him and said to us, "Treat him with black cumin. Take five or seven seeds and crush them (mix the powder with oil) and drop the resulting mixture into both nostrils, for 'Aishah (radhi Allahu anha) has narrated to me that she heard the Prophet (sallallahu alayhi wasallam) saying, 'This black cumin is healing for all diseases except As-Sam.' A'ishah asked, 'What is As-Sam?' He said, 'Death."

Sahih al Bukhari Volume 7, Book 71, Number 591

The oil extracted from the seeds is particularly good for healing cold, wet illnesses, benefits bronchitis and coughs, acts as a digestive tonic, eases belching, stimulates excretion of body wastes, expels intestinal worms, stimulates menstruation in women and increases the flow of breast milk for nursing mothers. Adding a few drops of the oil to coffee helps calm the nervous system, dispels fatigue and mild depression and eases a dry cough.

The Black Seed is also particularly beneficial for women suffering from abnormal absence of menstruation and other menstrual difficulties. An ointment made of black seed oil can also stimulate the growth of the beard and slow down the greying of hair. Boiling Black Seeds in vinegar and then rinsing one’s mouth with this liquid can help relieve toothache and heal gum problems.

Placing powdered black seeds in a fine muslin cloth and inhaling them regularly helps reduce the effects of winter colds. 

Link to cure for specific ailments using black seed oil - http://prophetic-medicine.blogspot.co.uk/2011/12/black-seed-oil-cures.html

Study Finds Nigella Sativa (Black Seed) Inhibits Pancreatic Cancer - http://www.healthymuslim.com/articles/ohsik-study-finds-nigella-sativa-black-seed-inhibits-pancreatic-cancer.cfm