Drilldown: Medicines

Magnesium (oxide, citrate, sulfate, hydroxide, gluconate, chloride salts) (1) · Potassium chloride (1)

K-Dur, Klor-Con, Slow-K, Micro-K, K-Lyte/Cl (1) · Mag-Ox, Slow-Mag, MagCitrate, Milk of Magnesia (hydroxide); IV sulfate generic (1)

hydroxide)]] (1) · torsades)]] (1) · [[:Category:Antacids|Antacid (hydroxide)]] (1) · [[:Category:Antiarrhythmics|Antiarrhythmic (IV sulfate (1) · [[:Category:Electrolyte_replacements|Electrolyte replacement]] (2) · [[:Category:Osmotic_laxatives|Osmotic laxative (citrate (1) · [[:Category:Potassium_supplements|Potassium supplement]] (1)

None (1) · '"`UNIQ--vote-00001302-QINU`"' Renally cleared; accumulation in advanced CKD can produce neuromuscular and cardiac depression. Hypomagnesemia frequently co-exists with hypokalemia and is often the reason refractory potassium loss does not correct until magnesium is repleted. (1)

'"`UNIQ--vote-000002EE-QINU`"', '"`UNIQ--vote-000002EF-QINU`"' (1) · '"`UNIQ--vote-00001303-QINU`"', '"`UNIQ--vote-00001304-QINU`"', '"`UNIQ--vote-00001305-QINU`"', '"`UNIQ--vote-00001306-QINU`"', '"`UNIQ--vote-00001307-QINU`"', '"`UNIQ--vote-00001308-QINU`"', '"`UNIQ--vote-00001309-QINU`"' (1)

10-20 mEq PO daily for prevention; treat established hypokalemia per measured deficit, typically 40-100 mEq/d in divided doses; IV 10 mEq/h peripheral, 20 mEq/h central with telemetry (1) · Replacement oxide 400-800 mg/d in divided doses (high diarrhea rate); citrate 200-400 mg/d (better tolerated, better absorbed); IV sulfate 1-2 g over 5-60 minutes for hypomagnesemia or torsades; eclampsia 4-6 g IV loading then 1-2 g/h (1)

8, 10, 20, 25 mEq tablets/capsules (most ER); effervescent and oral solution; IV concentrate (must be diluted) (1) · Oxide 400, 500 mg tablets (240, 300 mg elemental); citrate 100, 150, 200 mg tablets; hydroxide oral suspension 400 mg/5 mL; sulfate IV 500 mg/mL ampules (1)

Indication-specific; renal clearance limits tolerable cumulative dosing (1) · IV peripheral 10 mEq/h (40 mEq/L); IV central 20 mEq/h with cardiac monitoring; PO single doses generally ≤40 mEq (1)

None · Oral · IV · Topical · IM · intranasal · rectal · Subcutaneous · topical ophthalmic · ophthalmic · intramuscular · intravenous · transdermal · vaginal · Subcutaneous (abdomen · sublingual · thigh · Inhaled · SC · intra-articular

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Hours (PO); IV faster but rate-limited (1) · Oral: hours; IV: minutes (1)

None · 24 hours · 4-6 hours · 12 hours · 6-8 hours · Daily dosing · 8-12 hours · 12-24 hours · Hours · Hours per application · 24 hours (HS dosing) · 24 hours (once-daily dosing) · 24 h · N/A · N/A (replacement) · Variable · ~7-8 hours · 3-5 hours · 4-6 hours (IR); 24 hours (ER) · 6-12 hours

Other values:

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Not meaningfully described (electrolyte; renally cleared) (1) · Not meaningfully described for an electrolyte; distribution between intra- and extracellular compartments is the relevant kinetic (1)

60-80% (oral) (1) · Highly salt-dependent: citrate ~25-30%; oxide ~4% (limited and causes osmotic diarrhea); chloride ~12% (1)

Generally safe at replacement doses; treat the underlying cause of hypokalemia.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · IV sulfate is the cornerstone of eclampsia/preeclampsia management; oral replacement also safe.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1)

OTC (oral salts) and [[USLegal:Prescription only|Rx-only]] (IV) in US (1) · [[USLegal:Prescription only|Rx-only]] (higher concentrations and IV) and OTC (low-dose supplements) in US (1)