If a person is on an SSRI, and changes their diet or eats something that inhibits/blocks the enzyme system that metabolises the drugs…akathisia can explode in the head. It’s interesting to me that Stewart Dolin was well enough to go to a business lunch and shortly after that he committed suicide…I’m wondering what did he eat at that lunch? I was always at my most suicidal in the morning and I drink tea. Much later I found research that black teas inhibits all of the Cytochrome P450 liver enzyme system involved in metabolising these drugs.
Fluphenazine came into use in 1959.  The injectable form is on the World Health Organization's List of Essential Medicines , the most effective and safe medicines needed in a health system .  It is available as a generic medication .  In the United States the tablets costs between and USD per day for a typical dose.  The wholesale cost in the developing world of the long acting form is between and USD per injection as of 2014.  It was discontinued in Australia around mid 2017.