Not sure, but black seed oil / nigella sativa might not good to take because of the serotonergic + acetylcholine effects
it elevates serotonin & tryptophan levels a lot according to some studies.
https://www.researchgate.net/figure...T-levels-Values-are-mean-SD-n6_fig2_260843200 and inhibits acetylcholinesterase a lot (rasies acetylcholine).
high levels of both of these are common in people with depression
The seeds of Nigella sativa L., commonly known as black seed or black cumin, and its extracts are used in folk medicine in the Middle East and in Asian countries for the promotion of good health and as a remedy for many ailments. These seeds have many ...
www.ncbi.nlm.nih.gov
Objectives: In the last few decades, therapeutic uses of medicinal compounds present in food as a normal constituent has risen substantially, largely because of their fewer side effects and adequat...
www.tandfonline.com
but it does show anti-depressant effect in some rodent studies. maybe because of the GABA-A effects outweighing the serotonin+acetylcholine initially? or that takes longer to show up nearer the end of the study? not sure
the compund "alpha pinene" in nigella sativa does activate serotonin receptors also
https://koreascience.kr/article/JAKO200603041158721.pdf
so maybe its effect is similar to SSRIs , where it causes such an extreme overload of serotonin that the brain downregulates the 5-ht2a receptor and upregulates the 5-ht1a over time giving a net benefit effect somehow? idk