Taurine is essential for heart health and lowering blood pressure.
I wonder whether any vegan taurine supplements exist.
Wikipedia has some answers:
Taurine is commonly sold as a dietary supplement, but there is no good clinical evidence that taurine supplements provide any benefit to human health.[7] Taurine is used as a food additive for cats (who require it as an essential nutrient), dogs, and poultry.[8]
and
Not an essential human dietary nutrient — taurine is excluded among nutrients with a Reference Daily Intake[4] — and its role in human physiology is unknown.
and
Taurine is a major constituent of bile, and can be found in the large intestine.[citation needed] Its concentrations in land plants are low or undetectable, but up to a substantial wet weight has been found in algae.[10][11]