Black seed, nigella sativa, has shown promise in treating some of the most common health conditions. It also shows strong antifungal activity against yeast overgrowth. Examples of other black seed oil health benefits include:
Reducing high blood pressure. 
Reducing high cholesterol. 
Improving rheumatoid arthritis symptoms. 
Decreasing asthma symptoms.  
Reducing stomach upset.
Black seed is also thought to have anticancer properties. It may help fight against skin cancers when applied topically.
This can be taken as an infused oil, tincture, or tea.