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: Analgesic

or Empathogen

or [[:Category:Hormone_replacement|Hormone replacement]]

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4-FA (1) · 5-APB (1) · 5-MAPB (1) · 6-APB (1) · 6-APDB (1) · Buprenorphine (1) · Butorphanol (1) · Butylone (1) · Codeine (2) · Dextropropoxyphene (1) · Dihydrocodeine (1) · Ephylone (1) · Ethylmorphine (1) · Ethylone (1) · Fentanyl (1) · Hydrocodone (1) · Hydromorphone (1) · Levorphanol (1) · Levothyroxine (1) · Liothyronine (T3, triiodothyronine sodium) (1) · MDA (1) · MDAI (1) · MDEA (1) · MDMA (1) · Meperidine (1) · Mephedrone (1) · Methadone (1) · Methylone (1) · Nalbuphine (1) · Oxymorphone (1) · Papaverine (1) · Pentazocine (1) · PMA (1) · PMMA (1) · Tapentadol (1) · Thyroid (desiccated) (1)

None (21) · (multiple, generic dominant) (1) · Armour Thyroid, NP Thyroid, Nature-Throid, WP Thyroid (1) · Cytomel (oral), Triostat (IV) (1) · Darvon (1) · Demerol (1) · Dilaudid (1) · Dolophine (1) · Duragesic (1) · Nubain (1) · Nucynta (1) · Opana (1) · Stadol (1) · Suboxone (1) · Synthroid, Levoxyl, Tirosint, Unithroid, Euthyrox (1) · Talwin (1) · Vicodin (1)

None (1) · Kappa agonist; mu antagonist (1) · Kappa agonist; mu partial agonist (1) · Kappa agonist; mu partial agonist/antagonist (1) · MAO inhibitor; monoamine releasing agent (1) · MAO inhibitor; serotonin releasing agent (1) · Monoamine releasing agent (3) · Monoamine releasing agent; 5-HT2A agonist (1) · Monoamine releasing agent; serotonergic at higher doses (1) · Mu-opioid agonist; norepinephrine reuptake inhibitor (1) · Mu-opioid receptor agonist (4) · Mu-opioid receptor agonist; NMDA antagonist (1) · Mu-opioid receptor agonist; prodrug (metabolized to morphine) (1) · Mu-opioid receptor agonist; sodium channel blocker (1) · Mu/kappa/delta agonist; NMDA antagonist (1) · Partial mu-opioid agonist; kappa antagonist (1) · Phosphodiesterase inhibitor; calcium channel blocker (1) · Potent mu-opioid receptor agonist (3) · Prodrug; converted to [[Morphine|morphine]] by [[Enzyme:CYP2D6|CYP2D6]] for analgesic action. (1) · Serotonin releasing agent (2) · Serotonin releasing agent; 5-HT2A agonist (3) · Serotonin/dopamine/norepinephrine releasing agent; 5-HT2A agonist (1) · Serotonin/norepinephrine/dopamine releasing agent (3) · Synthetic T4 (thyroxine); peripherally deiodinated to T3 (triiodothyronine), the active hormone. '"`UNIQ--vote-00000031-QINU`"' Narrow therapeutic index; brand-to-generic switches can shift TSH and require re-titration'"`UNIQ--ref-00000032-QINU`"'. (1) · '"`UNIQ--vote-00000032-QINU`"' Brand-to-brand and lot-to-lot variability in T3:T4 ratio is greater than with synthetic levothyroxine, which is why endocrine guidelines prefer the synthetic'"`UNIQ--ref-00000033-QINU`"'. (1)

None (33) · Mild to moderate pain; cough suppression (low-dose). (1) · '"`UNIQ--vote-00000033-QINU`"', '"`UNIQ--vote-00000034-QINU`"', '"`UNIQ--vote-00000035-QINU`"' (1) · '"`UNIQ--vote-00000034-QINU`"', '"`UNIQ--vote-00000035-QINU`"' (1) · '"`UNIQ--vote-0000149A-QINU`"', '"`UNIQ--vote-0000149B-QINU`"', '"`UNIQ--vote-0000149C-QINU`"' (1)

None (33) · 1.6 mcg/kg/d in young healthy adults; 25-50 mcg/d in elderly or cardiac disease, titrated by TSH at 6-8 weeks (1) · 30 mg PO daily (1/2 grain); titrate by TSH at 6-8 weeks; 60 mg desiccated thyroid is approximately equivalent to 88-100 mcg levothyroxine (1) · Adult: 15–60 mg every 4 hours as needed. (1) · Hypothyroidism: 5-25 mcg PO daily (start low, titrate slowly); myxedema coma: 5-20 mcg IV q4-12h with T4 loading (1)

None (33) · 15, 30, 60, 90, 120, 180, 240, 300 mg tablets (1/4 to 5 grains; 1 grain = 60 mg) (1) · 25, 50, 75, 88, 100, 112, 125, 137, 150, 175, 200, 300 mcg tablets; oral capsule and IV/IM also available (1) · 5, 25, 50 mcg tablets (Cytomel); 10 mcg/mL IV (Triostat) (1) · Tablet (15, 30, 60 mg); oral solution; combination products (with [[Acetaminophen|acetaminophen]] or ibuprofen). (1)

None (33) · 100 mcg/d typical (1) · 360 mg/day (1) · No fixed maximum; titrated to TSH target (2)

None (33) · IV (2) · Oral (3) · PO (only formulation marketed in the US). (1)

None (33) · 30–60 min (PO) (1) · Hours (faster than T4); peak biologic activity 24-48 hours (1) · TSH normalization 4-8 weeks (1) · TSH normalization 4-8 weeks; symptomatic improvement weeks to months (1)

None (33) · 24-72 hours (1) · 4–6 hours (1) · Steady-state at 4-6 weeks (2)

None (33) · 2.5–3 hours (1) · T4 ~7 days; T3 ~1 day'"`UNIQ--ref-00000036-QINU`"' (1) · ~1 day (much shorter than T4's ~7 days)'"`UNIQ--ref-0000149D-QINU`"' (1) · ~7 days (euthyroid); longer in hypothyroidism (~9-10 days), shorter in hyperthyroidism'"`UNIQ--ref-00000036-QINU`"' (1)

None (33) · 40-80% (oral); reduced by food, calcium, iron, PPIs, fiber; take fasting with water'"`UNIQ--ref-00000037-QINU`"' (1) · Variable; reduced by food, calcium, iron, PPIs'"`UNIQ--ref-00000037-QINU`"' (1) · ~50% (variable, CYP2D6-dependent for analgesic effect). (1) · ~95% (oral)'"`UNIQ--ref-0000149E-QINU`"' (1)

None (33) · Avoid; risk of neonatal opioid withdrawal with chronic use; UM-mother breastfeeding contraindicated. (1) · First-line in pregnancy; dose typically increased 25-30% due to estrogen-driven rise in TBG and fetal demand. Lactation safe at physiologic doses.[[[Pharmacopedia:Citation needed|citation needed]]] (1) · Synthetic levothyroxine is the standard-of-care in pregnancy; desiccated thyroid use in pregnancy is not well studied[[[Pharmacopedia:Citation needed|citation needed]]] (1) · T4 (levothyroxine) is the first-line in pregnancy; T3 is rarely needed.[[[Pharmacopedia:Citation needed|citation needed]]] (1)

None (33) · US Schedule II (single-entity); Schedule III–V (combination products by content). (1) · [[USLegal:Prescription only|Rx-only]] in US (3)