This is russian version of the "Poison Overdose" mod by Trippdoll
http://skyrim.nexusmods.com/downloads/file.php?id=9920

Concentrated Poison Perk now has 5 levels
Rank 1 R40 Alch - 5 hits with 1 poison
Rank 2 R50 Alch - 10 hits with 1 poison
Rank 3 R60 Alch - 15 hits with 1 poison
Rank 4 R70 Alch - 20 hits with 1 poison
Rank 4 R100 Alch - 50 hits with 1 poison