Pharmacokinetics
Absorption: IV administration results in complete bioavailability; well absorbed from IM sites.
Distribution: Widely distributed. Crosses the placenta and is present in breast milk.
Metabolism and Excretion: Excreted primarily by the kidneys.
Half-life: Unknown.
TIME/ACTION PROFILE (anticonvulsant effect)
| ROUTE | ONSET | PEAK | DURATION |
| IM | 60 min | unknown | 3–4 hr |
| IV | immediate | unknown | 30 min |
magnesium sulfate (IV, parenteral) has been found in Davis's Drug Guide
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