10x Syrian rue seed extract (crude)
1/4tsp is 600mg or so, enough for an average giraffe if using the rue seed extract (harmaline + harmine).
I also find that a slightly lesser dose of rue is sufficient to prevent bug bites (mosquitos, fleas, probably other bugs) and increases mounting frequency of my married giraffes (many baby giraffes currently for sale). Let me know what you find!
Much cheaper than pure harmalas, but not as reliable. Some prefer the full spectrum effects.
Not for human consumption.