Drilldown: Medicines

Cyclobenzaprine (1) · Lamotrigine (1) · Meclizine (1)

Antivert (Rx), Bonine (OTC), Dramamine Less Drowsy (OTC) (1) · Flexeril (IR; brand discontinued in US, generic widely available), Amrix (ER) (1) · Lamictal (IR), Lamictal XR, Lamictal ODT (1)

[[:Category:Anticonvulsants|Anticonvulsant]] (1) · [[:Category:Antiemetics|Antiemetic]] (1) · [[:Category:Antihistamines|First-generation antihistamine (piperazine)]] (1) · [[:Category:Antivertigo medicines|Antivertigo medicine]] (1) · [[:Category:Mood stabilizers|Mood stabilizer]] (1) · [[:Category:Skeletal muscle relaxants|Skeletal muscle relaxant (centrally-acting)]] (1) · [[:Category:Sodium channel blockers|Sodium channel blocker]] (1) · [[:Category:Tricyclic-related compounds|Tricyclic-related compound]] (1)

None (2) · '"`UNIQ--vote-00000013-QINU`"' Anticholinergic burden (dry mouth, blurred vision, urinary retention, cognitive effects) is the principal adverse-event concern and the basis for Beers-list cautions in elderly patients'"`UNIQ--ref-00000014-QINU`"'. (1)

'"`UNIQ--vote-00000015-QINU`"', '"`UNIQ--vote-00000016-QINU`"', '"`UNIQ--vote-00000017-QINU`"' (1) · '"`UNIQ--vote-00000017-QINU`"', '"`UNIQ--vote-00000018-QINU`"', '"`UNIQ--vote-00000019-QINU`"' (1) · '"`UNIQ--vote-00000021-QINU`"', '"`UNIQ--vote-00000022-QINU`"', '"`UNIQ--vote-00000023-QINU`"', '"`UNIQ--vote-00000024-QINU`"' (1)

None (1) · IR 5 mg PO TID; titrate to 10 mg TID if needed. Amrix ER 15 mg PO once daily. Off-label insomnia / fibromyalgia: 5-10 mg PO at bedtime (1) · Motion sickness: 25-50 mg PO 1 hour before travel, repeat every 24 hours as needed. Vertigo: 25-100 mg/day divided (1)

IR tablets 25, 100, 150, 200 mg; chewable dispersible tablets 2, 5, 25 mg; ODT 25, 50, 100, 200 mg; XR tablets 25, 50, 100, 200, 250, 300 mg (1) · IR tablets 5, 7.5, 10 mg; Amrix ER capsules 15, 30 mg (1) · Tablets 12.5, 25 mg; chewable tablets 25 mg (1)

100 mg/day (vertigo) (1) · 30 mg/day (IR or ER) (1) · 400 mg/day (bipolar monotherapy); 700 mg/day (epilepsy with enzyme-inducing comedication) (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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None · Hours · 30-60 minutes · 1-2 hours · ~30 min · LDL lowering at 2 weeks, max by 4 weeks · ~1 hour · 15-30 minutes · 15–30 min · 1–2 h · 30–60 min · Antidepressant effect emerges over 1-2 weeks · BP and symptomatic LUTS improvement within 1-2 weeks · BP effect within 1-2 weeks · Clinical improvement within 24-72 hours · Days · Motor improvement over days at therapeutic dose · Over weeks · Postprandial glucose effect within days; HbA1c by 12 weeks · Sleep effect from first dose; antidepressant effect over 1-4 weeks

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12-24 hours (IR); 24 hours (Amrix ER) (1) · 12-24 hours (long for an antihistamine) (1) · 24 hours (often divided BID at higher doses) (1)

18 hours (IR); 32-33 hours (ER)'"`UNIQ--ref-0000001A-QINU`"' (1) · ~25-33 hours alone; ~15 hours with enzyme inducers; '''≥60 hours with valproate''' (UGT inhibition)'"`UNIQ--ref-00000025-QINU`"' (1) · ~6 hours'"`UNIQ--ref-00000018-QINU`"' (1)

~25% (oral)'"`UNIQ--ref-00000019-QINU`"' (1) · ~33-55% (IR); reduced by food'"`UNIQ--ref-0000001B-QINU`"' (1) · ~98% (oral)'"`UNIQ--ref-00000026-QINU`"' (1)

'''Among the safest mood stabilizers in pregnancy''' with reassuring monotherapy registry data, in sharp contrast to valproate. Estrogen-containing contraceptives accelerate lamotrigine metabolism, requiring dose adjustments at start and stop of contraception'"`UNIQ--ref-00000027-QINU`"' (1) · Limited human data.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · Older agent with substantial use experience; observational signals reassuring for first-trimester exposure.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1)

[[USLegal:Over-the-counter|OTC]] as Bonine and Dramamine Less Drowsy; [[USLegal:Prescription only|Rx-only]] as Antivert (1) · [[USLegal:Prescription only|Rx-only]] in US. Carries the FDA '''Boxed Warning for serious skin reactions''' including Stevens-Johnson syndrome and toxic epidermal necrolysis, with the risk concentrated in the first 2-8 weeks of therapy and elevated by rapid titration'"`UNIQ--ref-00000028-QINU`"' (1) · [[USLegal:Prescription only|Rx-only]] in US. Not a controlled substance, distinguishing it from the carisoprodol alternative for muscle spasm'"`UNIQ--ref-0000001C-QINU`"' (1)