Yeah it is very tricky, Alfala has always been safe and worked for me though, at times even given me energy after I take around 5 pills. I don't know what could possibly be bad about it long term since it is basically a food? We eat foods everyday, why would that be worse? Contamination? We eat that everyday with our foods too. Alfalfa is basically in all the natural supplements that standar process (Food vitamins) as a key ingrediant, look up those food supplements and see Alfalfa listed alot too.

In Sanskrit, tulsi means literally "the incomparable one" and has been revered since ancient times. Tulsi, the holy basil, is said to have grown at the site of Christ’s crucifixion and is associated with St. Basil’s feast.