ProductsAntibioticsButyrolactone I Butyrolactone I SKU: B057-5MG Unit: Each Brand: TOKU-E Butyrolactone I Other products from «Antibiotics» Entecavir # E030-10MG Levofloxacin Hcl # L048-5G Cefsulodin Sodium # C058-100MG Clotrimazole # C037-25G