21.朱先生28歲，因癲癇控制不佳住院，病人拒服口服藥品，預備給與phenytoin sodium針劑。 下列敘述何者錯誤？
(A)此藥可以靜脈注射給與
(B)該藥品為強酸性（pH=4）
(C)肌肉注射容易結晶析出
(D)對注射部位的組織會有刺激性

IM: Avoid IM administration due to severe risk of local tissue destruction and necrosis; use fosphenytoin if IM administration necessary (Boucher 1996; Meek 1999). The manufacturer's labeling includes IM administration; however, in general the IM route should be avoided and should NOT be used for status epilepticus.

rf. Uptodate 

phenytoin有口服劑型喔

Dosage Forms: US 

Capsule, Oral, as sodium:

Dilantin: 30 mg [contains fd&c yellow #10 (quinoline yellow)]

Dilantin: 100 mg

Phenytek: 200 mg, 300 mg [contains brilliant blue fcf (fd&c blue #1), fd&c blue #1 aluminum lake, fd&c blue #2 aluminum lake, fd&c red #40 aluminum lake, fd&c yellow #10 aluminum lake]

Generic: 100 mg, 200 mg, 300 mg

Solution, Injection, as sodium:

Generic: 50 mg/mL (2 mL, 5 mL)

Suspension, Oral:

Dilantin: 125 mg/5 mL (237 mL) [orange-vanilla flavor]

Generic: 125 mg/5 mL (4 mL, 237 mL)

Tablet Chewable, Oral:

Dilantin Infatabs: 50 mg [scored]

Phenytoin Infatabs: 50 mg [scored; contains fd&c yellow #10 aluminum lake, fd&c yellow #6 aluminum lake, saccharin sodium]

Generic: 50 mg

rf. Uptodate