Historically, black seed has been used for headache, toothache, nasal congestion and intestinal worms.
Some people apply black seed directly to the skin or joint pain(rheumatism), headache, and certain skin conditions.
In foods, black seed is used as a flavoring or spice.
Black seed is also used for treating digestive tract conditions including gas, colic, diarrhea, dysentery, constipation, and hemorrhoids. It is used for respiratory conditions including asthma, allergies, cough, bronchitis, emphysema, flu, swine flu, and congestion.
Blackseed oil is good for a long list of health problems including asthma, high blood pressure, diabetes, inflammation, cough, headache, eczema, fever, dizziness and the flu. It may also help improve blood pressure and boost the immune system