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Medicines > duration 
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N/A (replacement) or
Variable; biologically active metabolite carries effect beyond plasma half-life
:
N/A (replacement) or
Variable; biologically active metabolite carries effect beyond plasma half-life Use the filters below to narrow your results.
generic:
brand:
classes:
[[:Category:Aldosterone_antagonists|Mineralocorticoid (aldosterone) receptor antagonist]] (1) ·
[[:Category:Antiandrogens|Antiandrogen]] (1) ·
[[:Category:B-vitamins|B-vitamin]] (2) ·
[[:Category:Hematinics|Hematinic]] (3) ·
[[:Category:Iron_supplements|Iron supplement]] (1) ·
[[:Category:Potassium-sparing_diuretics|Potassium-sparing diuretic]] (1) ·
[[:Category:Vitamins|Vitamin]] (2)
mechanism:
uses:
'"`UNIQ--vote-0000034F-QINU`"', '"`UNIQ--vote-00000350-QINU`"', '"`UNIQ--vote-00000351-QINU`"', '"`UNIQ--vote-00000352-QINU`"', '"`UNIQ--vote-00000353-QINU`"' (1) ·
'"`UNIQ--vote-0000059A-QINU`"', '"`UNIQ--vote-0000059B-QINU`"' (1) ·
'"`UNIQ--vote-000005B3-QINU`"', '"`UNIQ--vote-000005B4-QINU`"', '"`UNIQ--vote-000005B5-QINU`"', '"`UNIQ--vote-000005B6-QINU`"' (1) ·
'"`UNIQ--vote-00000607-QINU`"', '"`UNIQ--vote-00000608-QINU`"', '"`UNIQ--vote-00000609-QINU`"', '"`UNIQ--vote-0000060A-QINU`"' (1)
starting dose:
0.4 mg PO daily (general prevention); 0.8-1 mg/d in pregnancy; 4 mg/d for women with prior NTD-affected pregnancy; 1 mg/d during methotrexate therapy (1) ·
25 mg PO once daily for HFrEF and primary aldosteronism; up to 100 mg/d for ascites; 50-200 mg/d for hirsutism (1) ·
325 mg PO daily to TID (=65 mg elemental iron/tablet); alternate-day dosing is now favored by hepcidin physiology for better absorption with less GI burden (1) ·
Replacement: 1000 mcg IM daily for 1 week, then weekly for 4 weeks, then monthly; or 1000-2000 mcg PO daily (effective even in pernicious anemia via passive diffusion); intranasal 500 mcg weekly (1)
preparations:
0.4, 0.8, 1 mg OTC; 1 mg Rx; 5 mg/mL injection (1) ·
100, 250, 500, 1000, 5000 mcg tablets (OTC and Rx); 1000 mcg/mL injection; intranasal spray; sublingual (1) ·
25 mg, 50 mg, 100 mg tablets; 25 mg/5 mL oral suspension (CaroSpir) (1) ·
325 mg tablets (65 mg elemental Fe); 220 mg/5 mL liquid (44 mg elemental Fe/5 mL); 142 mg/mL drops; OTC and Rx (1)
fda max:
routes:
onset:
Hematologic response within days (1) ·
Natriuresis at 2-3 days; endocrine effects (gynecomastia, antiandrogen action) over weeks (1) ·
Reticulocyte response at 3-5 days; neurologic recovery weeks to months (and may be incomplete if longstanding) (1) ·
Reticulocyte response at 7-10 days; hemoglobin rise of ~1 g/dL per 3 weeks (1)
duration: (Click arrow to add another value)
halflife:
bioavailability:
10-20% (oral; reduced by food, calcium, antacids, PPIs, tea/coffee; enhanced by ascorbate) (1) ·
High (oral) (1) ·
Oral ~1-3% via passive diffusion at high doses (independent of intrinsic factor); IM/SC ~100% (1) ·
~70% (oral; bioavailability and absorption are improved with food)'"`UNIQ--ref-00000355-QINU`"' (1)
pregnancy:
Avoid in pregnancy; antiandrogen effects can feminize a male fetus.<sup class="pcp-cn" title="This claim needs a citation.">[[[Pharmacopedia:Citation needed|citation needed]]]</sup> (1) ·
Routinely supplemented in pregnancy and preconception to prevent neural tube defects.<sup class="pcp-cn" title="This claim needs a citation.">[[[Pharmacopedia:Citation needed|citation needed]]]</sup> (1) ·
Routinely supplemented in vegan pregnancies and pernicious anemia.<sup class="pcp-cn" title="This claim needs a citation.">[[[Pharmacopedia:Citation needed|citation needed]]]</sup> (1) ·
Routinely used; iron requirements rise substantially in pregnancy and lactation.<sup class="pcp-cn" title="This claim needs a citation.">[[[Pharmacopedia:Citation needed|citation needed]]]</sup> (1)
Showing below up to 4 results in range #1 to #4.