Drilldown: Medicines
Medicines > duration 
:
2-4 hours; headache recurrence rate ~20-30% within 24 hours or
N/A (replacement)
:
2-4 hours; headache recurrence rate ~20-30% within 24 hours or
N/A (replacement) Use the filters below to narrow your results.
generic:
brand:
Feosol, Fer-In-Sol, Slow Fe; mostly generic and OTC (1) ·
Folvite; mostly generic (1) ·
Imitrex (oral, injectable, nasal), Tosymra (nasal spray), Onzetra Xsail (nasal powder), Zembrace SymTouch (low-dose autoinjector), Sumavel DosePro (needle-free SC) (1) ·
Many OTC and Rx; Nascobal (intranasal); generic injection (1)
classes:
[[:Category:Analgesics|Analgesic]] (1) ·
[[:Category:Antimigraine medicines|Antimigraine medicine]] (1) ·
[[:Category:B-vitamins|B-vitamin]] (2) ·
[[:Category:Hematinics|Hematinic]] (3) ·
[[:Category:Iron_supplements|Iron supplement]] (1) ·
[[:Category:Triptans|Triptan (5-HT1B/1D agonist)]] (1) ·
[[:Category:Vitamins|Vitamin]] (2)
mechanism:
uses:
'"`UNIQ--vote-00000013-QINU`"', '"`UNIQ--vote-00000014-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) ·
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) ·
Oral: 50-100 mg at migraine onset, may repeat in 2 hours if needed. SC: 6 mg, may repeat in 1 hour. Nasal: 5-20 mg per nostril, may repeat in 2 hours (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) ·
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) ·
Oral tablets 25, 50, 100 mg; SC injection 4, 6 mg autoinjector; needle-free SC 6 mg (Sumavel); nasal spray 5, 20 mg; nasal powder 22 mg (Onzetra Xsail); low-dose autoinjector 3 mg (Zembrace SymTouch) (1)
fda max:
routes:
onset:
10 minutes (SC); 15-30 minutes (nasal); 30-60 minutes (oral) (1) ·
Hematologic response within days (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) ·
~14% (oral; substantial first-pass); ~97% (subcutaneous); ~17% (nasal)'"`UNIQ--ref-00000016-QINU`"' (1)
pregnancy:
Limited human data; pregnancy registry data have been broadly reassuring relative to baseline malformation rates.<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.