Hello doctor i have this infection in my arm is circle with 4 cm/2 what cream i must buy i use bevloden,microbat,and this time canesten ,nothing h?

Antibiotic: Sounds like large circle 4 x 2 cm redness on your arm which may indicate " cellulitis" ( skin infection ) . I am not familiar with product you so far used. But if redness spreading it is best to see doctor. it may require oral antibiotics . If you have " boils" than pus should be drained and wound well cleansed. For minor skin infection topical antibiotic cream as "mupirocin" can be used 3 x day