Tribulus or Puncturevine
Latin name: Tribulus terrestris
 
Known for its testosterone boosting and libido boosting properties.
Can also help with kidney stones and urinary irritibility. 
May help with skin allergies/eczema/psoriasis.
 
Comes in both full puncture vine berries or as a ground powder.
 
Sold by the ounce (28.5g/oz)
Both berries & powder: 1oz is approximately .5 cup
 
Caution: Do not take if you are pregnant or nursing. Consult a physician before taking any herbal supplements. This product has not been evaluated by the FDA and is not intended to diagnose, treat or cure any disease.