Maeng Da Green Vein Kratom 70ct Capsules. Mitragyna Speciosa Leaf 4.55g. Wholesale Pricing available. Dosage: It is essential to consider Biological sensitivity and Product source. Green leaves are stronger variants, and doses tend to be smaller. For most , 1 to 3 grams is a light dose while 3 to 5 grams is deemed a stronger dose. 5 to 10 grams or more are only for experienced kratom users.