Drilldown: Medicines

Cyanocobalamin (vitamin B12) (1) · Folic acid (folate, pteroylglutamic acid) (1) · Phencyclidine (1)

Folvite; mostly generic (1) · Many OTC and Rx; Nascobal (intranasal); generic injection (1) · Sernyl (human, withdrawn 1965); Sernylan (veterinary, withdrawn 1978) (1)

[[:Category:Anesthetics|Anesthetic (historical)]] (1) · [[:Category:Arylcyclohexylamines|Arylcyclohexylamine]] (1) · [[:Category:B-vitamins|B-vitamin]] (2) · [[:Category:Dissociatives|Dissociative]] (1) · [[:Category:Hematinics|Hematinic]] (2) · [[:Category:NMDA_receptor_antagonists|NMDA receptor antagonist]] (1) · [[:Category:Sigma-1_receptor_agonists|Sigma-1 receptor agonist]] (1) · [[:Category:Vitamins|Vitamin]] (2)

None (3)

'"`UNIQ--vote-00000063-QINU`"', '"`UNIQ--vote-00000064-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)

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) · No current medical indication. Historical anesthetic dose 0.25 mg/kg IV (Sernyl). (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)

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) · Historical: Sernyl 25 mg tablets, 10 mg/mL injection (human); Sernylan 100 mg/mL injection (veterinary). Illicit: white crystalline powder, oily liquid, "dipped" cigarettes ("wet"), tablets. (1)

1 mg/d typical Rx; higher in specific indications (1) · N/A (no current medical indication) (1) · No strict ceiling; water-soluble vitamin, low toxicity (1)

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

Other values:

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Hematologic response within days (1) · Reticulocyte response at 3-5 days; neurologic recovery weeks to months (and may be incomplete if longstanding) (1) · Smoked 2-5 min; insufflated 5-15 min; oral 30-60 min; IV / IM ~5-15 min (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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Highly variable, 7-46 hours (mean ~21 h); lipophilic deposition in fat with delayed re-release contributes to wide range'"`UNIQ--ref-00000065-QINU`"' (1) · ~0.5 hours plasma; tissue retention longer (1) · ~6 days (plasma); hepatic stores last 3-5 years (1)

High (oral) (1) · Oral ~1-3% via passive diffusion at high doses (independent of intrinsic factor); IM/SC ~100% (1) · ~72% oral; ~85% smoked'"`UNIQ--ref-00000066-QINU`"' (1)

None (1) · Routinely supplemented in pregnancy and preconception to prevent neural tube defects.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · Routinely supplemented in vegan pregnancies and pernicious anemia.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1)

OTC (low-dose) and [[USLegal:Prescription only|Rx-only]] (1 mg, injectable) in US (1) · OTC (low/mid-dose oral) and [[USLegal:Prescription only|Rx-only]] (injection, intranasal) in US (1) · [[USLegal:DEA Schedule II|Schedule II]] controlled substance in US (rescheduled from Schedule III in 1978). No accepted medical use. UN Convention on Psychotropic Substances Schedule II internationally.'"`UNIQ--ref-00000067-QINU`"' (1)