The product is high quality
The product is high quality, and at a good price. I take it regularly for migraines. When I read a journal article about the safe dose - since of course my primary care doctor would not know, because no big pharma company is subsidizing large clinical trials, I emailed LuLu to clarify the dose of thymoquinone in a tsp. of their blackseed oil, they quickly replied with the dose. Furthermore it is very likely to have negative effects, unless you are taking certain drugs that increase your natural level of seratonin. If you're not sure if you take such a drug, ask your pharmacist who know about your prescriptions.