Drilldown: Medicines

Cyanocobalamin (vitamin B12) (1) · Olopatadine (1)

Many OTC and Rx; Nascobal (intranasal); generic injection (1) · Patanol, Pataday (ophthalmic, now OTC), Patanase (intranasal) (1)

[[:Category:B-vitamins|B-vitamin]] (1) · [[:Category:H1_receptor_antagonists|Histamine H1 receptor antagonist]] (1) · [[:Category:Hematinics|Hematinic]] (1) · [[:Category:Mast_cell_stabilizers|Mast cell stabilizer]] (1) · [[:Category:Ophthalmic_antihistamines|Ophthalmic antihistamine]] (1) · [[:Category:Vitamins|Vitamin]] (1)

None (1) · '"`UNIQ--vote-000011D5-QINU`"' Minimal systemic absorption and the dual mechanism underlie its first-line role in seasonal allergic conjunctivitis. Comfort drops without preservatives are available for sensitive patients'"`UNIQ--ref-000011D6-QINU`"'. (1)

'"`UNIQ--vote-00000607-QINU`"', '"`UNIQ--vote-00000608-QINU`"', '"`UNIQ--vote-00000609-QINU`"', '"`UNIQ--vote-0000060A-QINU`"' (1) · '"`UNIQ--vote-000011D7-QINU`"', '"`UNIQ--vote-000011D8-QINU`"' (1)

Ophthalmic Pataday 0.7%: 1 drop in each eye once daily (24-hour formulation); Patanol 0.1% BID; intranasal Patanase 2 sprays/nostril BID (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)

0.1% (Patanol), 0.2% (Pataday once-daily original), 0.7% (Pataday 24-hour) ophthalmic solutions; 0.6% nasal spray (1) · 100, 250, 500, 1000, 5000 mcg tablets (OTC and Rx); 1000 mcg/mL injection; intranasal spray; sublingual (1)

No strict ceiling; water-soluble vitamin, low toxicity (1) · Once daily (Pataday 0.7%); BID (other ophthalmic) (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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Reticulocyte response at 3-5 days; neurologic recovery weeks to months (and may be incomplete if longstanding) (1) · Symptom relief within 30-60 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

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~3 hours (systemic, when measurable; topical action dominates)'"`UNIQ--ref-000011D9-QINU`"' (1) · ~6 days (plasma); hepatic stores last 3-5 years (1)

Oral ~1-3% via passive diffusion at high doses (independent of intrinsic factor); IM/SC ~100% (1) · Topical with minimal systemic absorption'"`UNIQ--ref-000011DA-QINU`"' (1)

Generally considered safe; minimal systemic exposure.<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/mid-dose oral) and [[USLegal:Prescription only|Rx-only]] (injection, intranasal) in US (1) · OTC (Pataday ophthalmic) and [[USLegal:Prescription only|Rx-only]] (Patanase intranasal) in US (1)