Drilldown: Medicines

Ascorbic acid (vitamin C) (1) · Fluorouracil (5-FU) (1)

Efudex (topical), Carac (topical), Fluoroplex (topical); generic IV (1) · Generic; huge OTC presence (1)

[[:Category:Antimetabolites|Antimetabolite (pyrimidine analog)]] (1) · [[:Category:Antineoplastics|Antineoplastic]] (1) · [[:Category:Antioxidants|Antioxidant]] (1) · [[:Category:Vitamins|Vitamin]] (1) · [[:Category:Water-soluble_vitamins|Water-soluble vitamin]] (1)

None (2)

'"`UNIQ--vote-000011BA-QINU`"', '"`UNIQ--vote-000011BB-QINU`"', '"`UNIQ--vote-000011BC-QINU`"', '"`UNIQ--vote-000011BD-QINU`"' (1) · '"`UNIQ--vote-000012E5-QINU`"', '"`UNIQ--vote-000012E6-QINU`"', '"`UNIQ--vote-000012E7-QINU`"', '"`UNIQ--vote-000012E8-QINU`"' (1)

General supplementation 75-90 mg/d (RDA); scurvy treatment 100-1000 mg/d for several weeks; megadose claims unsupported (1) · Topical: 0.5-5% cream/solution to lesions BID × 2-4 weeks; systemic IV: regimen-specific in cancer chemotherapy (1)

0.5% (Carac), 1% (Fluoroplex), 5% (Efudex) topical creams/solutions; 50 mg/mL IV (1) · 100, 250, 500, 1000 mg tablets, chewables, gummies, effervescent; IV (specialty) (1)

Topical: nightly; systemic: regimen-specific (1) · UL 2000 mg/d in adults (1)

None · Oral · IV · Topical · IM · intranasal · rectal · subcutaneous · Topical ophthalmic · ophthalmic · intramuscular · intravenous · transdermal · vaginal · Subcutaneous (abdomen · Sublingual · thigh · Inhaled · intra-articular · nebulized

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Days for symptom improvement in scurvy (1) · Topical: inflammation, erythema, crusting at 2 weeks; complete response weeks to months after course (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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~10-20 days (steady-state body pool); single dose plasma ~2 hours (1) · ~10-20 minutes systemically (rapid hepatic and erythrocyte dihydropyrimidine dehydrogenase clearance)'"`UNIQ--ref-000011BE-QINU`"' (1)

Topical: minimal systemic absorption (oral systemic 5-FU not used due to poor and variable absorption)'"`UNIQ--ref-000011BF-QINU`"' (1) · ~70-90% at typical doses; saturable at high doses (>500 mg) (1)

Safe at routine doses; routinely supplemented in pregnancy.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · Topical: avoid; systemic: contraindicated in pregnancy.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1)

OTC in US (1) · [[USLegal:Prescription only|Rx-only]] in US (1)