Bupivacaine HCl

(Mfr: AST, WI)(Amt: 0.25, 0.5^b, 0.75%^b/20 mL)

Sodium bicarbonate

(Mfr: AB)(Amt: 4%/0.05 to 0.6 mL)

Remarks:

Precipitate forms in 1 to 2 min up to 2 hr at lowest amount of bicarbonate

Ref:

¹⁷²⁴