Patent ID: 9283256
Filing Date: 2016-03-15
CPC Classification: A61K,A61P

Claim Text:
1. A topical gel formulation having antibacterial activity comprising a selectively purified extract from the root of a Salvia spp comprising the identified tanshinone compounds Cryptotanshinone, Dihydrotanshinone, Tanshinone I, and Tanshinone IIA, said extract characterized in that the extract has antibacterial activity at a level of 16 micrograms per milliliter or less in the gel formulation and the identified tanshinone compounds comprise at least 35% by weight of the selectively purified extract; the cryptotanshinone is the dominant tanshinone compound and comprises at least 15% by weight of the selectively purified extract and at least 40% by weight of the total identified tanshinone compounds; the tanshinone IIA comprises less than 50% by weight of the total identified tanshinone compounds; and said extract has antibacterial activity against at least one drug resistant bacterium.