I cannot comment on purity standards of the 2 companies, but based on appearance it practically looked the same, except the leaves were darker
If i was you,
I would buy a Standardized Extract. from a Reputable and GMP Certified company.
Such as Now Foods : http://www.nowfoods....eg-Capsules.htm
Schwabe Pharma ( This is Pharmaceutical Grade) : http://www.schwabeph...s/relaxherb.php
Herb Pharm and Gaia herbs should also have Good Quality Passion flower in a Tincture Form And capsules.
I wouldn't bother with buying leaves , as their is no Quality Control whatsoever.
You dont know the chemical constituents in the Leaves, they could differ from each batch.
But the standardized version will be closer to what it says it is.
Or you could try and find a company selling Leaves or a Standardized powder, that they have tested and can show what Constituents each batch has in it, so you know you are getting good quality herb, instead of a Passion Flower that could have little amount of effective chemicals etc..
As for the Whole Plant vs leaves, i think both are used and have been used traditionally.
I dont know which is more effective, but the Leaves seem to be more widely used.
The best thing to do is try all forms and then decide, but make sure you get a quality product.
Edited by Mr.Nootropic, 03 June 2014 - 04:51 PM.