Drilldown: Medicines

Calcium (carbonate, citrate, gluconate, chloride salts) (1) · Ivermectin (1) · Levothyroxine (1) · Magnesium (oxide, citrate, sulfate, hydroxide, gluconate, chloride salts) (1) · Thyroid (desiccated) (1)

Armour Thyroid, NP Thyroid, Nature-Throid, WP Thyroid (1) · Mag-Ox, Slow-Mag, MagCitrate, Milk of Magnesia (hydroxide); IV sulfate generic (1) · Stromectol (oral, generic), Sklice (lice, topical), Soolantra (rosacea, topical 1%) (1) · Synthroid, Levoxyl, Tirosint, Unithroid, Euthyrox (1) · Tums, Caltrate, Os-Cal, Citracal; many generics (1)

hydroxide)]] (1) · torsades)]] (1) · [[:Category:Antacids|Antacid (carbonate)]] (1) · [[:Category:Antacids|Antacid (hydroxide)]] (1) · [[:Category:Antiarrhythmics|Antiarrhythmic (IV sulfate (1) · [[:Category:Antiparasitics|Antiparasitic]] (1) · [[:Category:Calcium_supplements|Calcium supplement]] (1) · [[:Category:Electrolyte_replacements|Electrolyte replacement]] (2) · [[:Category:Hormone_replacement|Hormone replacement]] (2) · [[:Category:Macrocyclic_lactones|Macrocyclic lactone (avermectin)]] (1) · [[:Category:Osmotic_laxatives|Osmotic laxative (citrate (1) · [[:Category:Thyroid_hormones|Thyroid hormone]] (2)

None (2) · Synthetic T4 (thyroxine); peripherally deiodinated to T3 (triiodothyronine), the active hormone. '"`UNIQ--vote-00000031-QINU`"' Narrow therapeutic index; brand-to-generic switches can shift TSH and require re-titration'"`UNIQ--ref-00000032-QINU`"'. (1) · '"`UNIQ--vote-00000032-QINU`"' Brand-to-brand and lot-to-lot variability in T3:T4 ratio is greater than with synthetic levothyroxine, which is why endocrine guidelines prefer the synthetic'"`UNIQ--ref-00000033-QINU`"'. (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-00000033-QINU`"', '"`UNIQ--vote-00000034-QINU`"', '"`UNIQ--vote-00000035-QINU`"' (1) · '"`UNIQ--vote-00000034-QINU`"', '"`UNIQ--vote-00000035-QINU`"' (1) · '"`UNIQ--vote-0000108C-QINU`"', '"`UNIQ--vote-0000108D-QINU`"', '"`UNIQ--vote-0000108E-QINU`"', '"`UNIQ--vote-0000108F-QINU`"', '"`UNIQ--vote-00001090-QINU`"', '"`UNIQ--vote-00001091-QINU`"' (1) · '"`UNIQ--vote-000012B7-QINU`"', '"`UNIQ--vote-000012B8-QINU`"', '"`UNIQ--vote-000012B9-QINU`"', '"`UNIQ--vote-000012BA-QINU`"', '"`UNIQ--vote-000012BB-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)

1.6 mcg/kg/d in young healthy adults; 25-50 mcg/d in elderly or cardiac disease, titrated by TSH at 6-8 weeks (1) · 30 mg PO daily (1/2 grain); titrate by TSH at 6-8 weeks; 60 mg desiccated thyroid is approximately equivalent to 88-100 mcg levothyroxine (1) · Oral: 1000-1500 mg elemental calcium/day in divided doses for supplementation; IV gluconate 1 g (4.65 mEq) over 5-10 min for hyperkalemia or symptomatic hypocalcemia (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) · Strongyloides 200 mcg/kg PO single dose; scabies 200 mcg/kg PO repeated at 7-14 days; onchocerciasis 150 mcg/kg q6-12 months (1)

15, 30, 60, 90, 120, 180, 240, 300 mg tablets (1/4 to 5 grains; 1 grain = 60 mg) (1) · 25, 50, 75, 88, 100, 112, 125, 137, 150, 175, 200, 300 mcg tablets; oral capsule and IV/IM also available (1) · 3 mg tablets (Stromectol); 0.5% topical lotion (Sklice); 1% topical cream (Soolantra) (1) · Carbonate 200, 400, 500, 600 mg elemental tablets and chewables; citrate 200, 250, 315 mg elemental; gluconate 1 g (94 mg elemental, 4.65 mEq) IV; chloride 1 g (270 mg elemental, 13.6 mEq) IV (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) · No fixed maximum; titrated to TSH target (2) · Single 200-400 mcg/kg per dose for systemic indications (1) · ~2500 mg elemental/d combined diet + supplements (chronic; UL) (1)

IV (2) · IV (gluconate or chloride for acute use) (1) · Oral (5) · topical (1)

Acute: minutes (IV); chronic: bone effect over months (1) · Hours to days (1) · Oral: hours; IV: minutes (1) · TSH normalization 4-8 weeks (1) · TSH normalization 4-8 weeks; symptomatic improvement weeks to months (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) (1) · Not meaningfully described (electrolyte; renally cleared) (1) · T4 ~7 days; T3 ~1 day'"`UNIQ--ref-00000036-QINU`"' (1) · ~16-18 hours'"`UNIQ--ref-00001092-QINU`"' (1) · ~7 days (euthyroid); longer in hypothyroidism (~9-10 days), shorter in hyperthyroidism'"`UNIQ--ref-00000036-QINU`"' (1)

40-80% (oral); reduced by food, calcium, iron, PPIs, fiber; take fasting with water'"`UNIQ--ref-00000037-QINU`"' (1) · Carbonate ~30-40% (best with food and acid); citrate ~24% (absorbable without acid; preferred in achlorhydria, PPI use, post-bariatric) (1) · Highly salt-dependent: citrate ~25-30%; oxide ~4% (limited and causes osmotic diarrhea); chloride ~12% (1) · Variable; reduced by food, calcium, iron, PPIs'"`UNIQ--ref-00000037-QINU`"' (1) · ~60% (oral; substantially increased with high-fat meal)'"`UNIQ--ref-00001093-QINU`"' (1)

First-line in pregnancy; dose typically increased 25-30% due to estrogen-driven rise in TBG and fetal demand. Lactation safe at physiologic doses.<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) · Limited data; risk-benefit case by case; pregnancy is not a strict contraindication in WHO mass drug administration programs.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · Routinely supplemented in pregnancy; needs higher in pregnancy and lactation.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · Synthetic levothyroxine is the standard-of-care in pregnancy; desiccated thyroid use in pregnancy is not well studied<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) · OTC (oral supplements) and [[USLegal:Prescription only|Rx-only]] (IV) in US (1) · [[USLegal:Prescription only|Rx-only]] in US (2) · [[USLegal:Prescription only|Rx-only]] in US (the veterinary preparations are not for human use) (1)