Nhận Dạng Quốc Tế & Đặc Tính Hóa Học
Monoisotopic mass
336.220163528
InChI
InChI=1S/C22H28N2O/c1-2-22(25)24(20-11-7-4-8-12-20)21-14-17-23(18-15-21)16-13-19-9-5-3-6-10-19/h3-12,21H,2,13-18H2,1H3
InChI Key
InChIKey=PJMPHNIQZUBGLI-UHFFFAOYSA-N
IUPAC Name
N-phenyl-N-[1-(2-phenylethyl)piperidin-4-yl]propanamide
Traditional IUPAC Name
fentanyl
SMILES
CCC(=O)N(C1CCN(CCC2=CC=CC=C2)CC1)C1=CC=CC=C1
Độ hòa tan
200 mg/L (at 25 °C)
pKa (Strongest Basic)
8.77
Refractivity
103.48 m3·mol-1
Dược Lực Học :
Fentanyl is an opioid analgesic. Fentanyl interacts predominately with the opioid mu-receptor but also binds to kappa and delta-type opioid receptors. These mu-binding sites are discretely distributed in the human brain, spinal cord, and other tissues. In clinical settings, Fentanyl exerts its principal pharmacologic effects on the central nervous system. Its primary actions of therapeutic value are analgesia and sedation. Fentanyl may increase the patient's tolerance for pain and decrease the perception of suffering, although the presence of the pain itself may still be recognized. In addition to analgesia, alterations in mood, euphoria and dysphoria, and drowsiness commonly occur. Fentanyl depresses the respiratory centers, depresses the cough reflex, and constricts the pupils.
Cơ Chế Tác Dụng :
A potent narcotic analgesic, abuse of which leads to habituation or addiction. It is primarily a mu-opioid agonist. Fentanyl is also used as an adjunct to general anesthetics, and as an anesthetic for induction and maintenance. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1078)
Opiate receptors are coupled with G-protein receptors and function as both positive and negative regulators of synaptic transmission via G-proteins that activate effector proteins. Binding of the opiate stimulates the exchange of GTP for GDP on the G-protein complex. As the effector system is adenylate cyclase and cAMP located at the inner surface of the plasma membrane, opioids decrease intracellular cAMP by inhibiting adenylate cyclase. Subsequently, the release of nociceptive neurotransmitters such as substance P, GABA, dopamine, acetylcholine and noradrenaline is inhibited. Opioids also inhibit the release of vasopressin, somatostatin, insulin and glucagon. Fentanyl's analgesic activity is, most likely, due to its conversion to morphine. Opioids close N-type voltage-operated calcium channels (OP2-receptor agonist) and open calcium-dependent inwardly rectifying potassium channels (OP3 and OP1 receptor agonist). This results in hypopolarization and reduced neuronal excitability.
Dược Động Học :
▧ Absorption :
Bioavailability is 92% following transdermal administration and 50% following buccal administration.
▧ Volume of Distribution :
* 3 to 8 L/kg [Surgical Patients]
* 0.8 to 8 [Hepatically Impaired Patients]
▧ Protein binding :
80-85%
▧ Metabolism :
Fentanyl is metabolized primarily via human cytochrome P450 3A4 isoenzyme system.
▧ Route of Elimination :
Fentanyl is metabolized primarily via human cytochrome P450 3A4 isoenzyme system and mostly eliminated in urine. Within 72 hours of IV fentanyl administration, approximately 75% of the dose is excreted in urine, mostly as metabolites with less than 10% representing unchanged drug.
▧ Half Life :
7 hours (range 3-12)
▧ Clearance :
* 27 – 75 L/h [Surgical Patients receving IV administration]
* 3 – 80 L/h [Hepatically Impaired Patients receving IV administration]
* 30 – 78 L/h [Renally Impaired Patients receving IV administration]
Độc Tính :
Fentanyl has an LD50 of 3.1 milligrams per kilogram in rats, and, 0.03 milligrams per kilogram in monkeys. The LD50 in humans is not known.
Chỉ Định :
For the treatment of cancer patients with severe pain that breaks through their regular narcotic therapy.
Tương Tác Thuốc :
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Alvimopan
Increases levels by receptor binding competition. Discontinue opioid administration at least 7 days prior to administrating Alvimopan.
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Amiodarone
Possible bradycardia, hypotension
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Amprenavir
The protease inhibitor, amprenavir, may increase the effect and toxicity of fentanyl.
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Bicalutamide
CYP3A4 Inhibitors like bicalutamide may increase the serum concentration of fentanyl. The risk of prolonged adverse effects, including potentially fatal respiratory depression is increased. Consider therapy modification.
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Cimetidine
Cimetidine, a moderate CYP3A4 inhibitor, may decrease the metabolism of fentanyl. Closely monitor changes in the therapeutic and adverse effects of fentanyl if cimetidine is initiated, discontinued or dose changed.
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Clotrimazole
CYP3A4 Inhibitors (Moderate) such as clotrimazole may increase the serum concentration of fentanyl. Concurrent use of fentanyl with any CYP3A4 inhibitor may result in increased fentanyl concentrations and could increase or prolong adverse effects, including potentially fatal respiratory depression. Patients receiving fentanyl and any CYP3A4 inhibitor should be closely monitored for several days following initiation of the combination, and fentanyl dosage reductions should be made as appropriate.
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Conivaptan
CYP3A4 Inhibitors (Strong) may increase the serum concentration of Fentanyl. Concurrent use of fentanyl with any CYP3A4 inhibitor may result in increased fentanyl concentrations and could increase or prolong adverse effects, including potentially fatal respiratory depression. Patients receiving fentanyl and any CYP3A4 inhibitor should be closely monitored for several days following initiation of the combination, and fentanyl dosage reductions should be made as appropriate.
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Eltrombopag
Increases levels of Fentanyl via metabolism decrease. UDP-glucuronosyltransferase inhibition.
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Fluconazole
Fluconazole may increase levels/toxicity of fentanyl.
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Fosamprenavir
The protease inhibitor, fosamprenavir, may increase the effect and toxicity of fentanyl.
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Indinavir
The protease inhibitor, indinavir, may increase the effect and toxicity of fentanyl.
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Itraconazole
Itraconazole may increase levels/toxicity of fentanyl.
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Ketoconazole
Ketoconazole may increase levels/toxicity of fentanyl.
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Nelfinavir
The protease inhibitor, nelfinavir, may increase the effect and toxicity of fentanyl.
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Rifampicin
Rifampin may decrease the serum level and therapeutic effect of fentanyl.
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Ritonavir
Ritonavir increases the effect and toxicity of fentanyl/alfentanyl
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Rotigotine
Pharmacodynamic synergism may increase the effects of rotigotine. Monitor therapy closely.
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Saquinavir
The protease inhibitor, saquinavir, may increase the effect and toxicity of fentanyl.
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Telithromycin
Telithromycin may reduce clearance of Fentanyl. Consider alternate therapy or monitor for changes in the therapeutic/adverse effects of Fentanyl if Telithromycin is initiated, discontinued or dose changed.
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Tranylcypromine
Possible increased risk of serotonin syndrome.
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Triprolidine
The CNS depressants, Triprolidine and Fentanyl, may increase adverse/toxic effects due to additivity. Monitor for increased CNS depressant effects during concomitant therapy.
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Voriconazole
Voriconazole, a strong CYP3A4 inhibitor, may increase the serum concentration of fentanyl by decreasing its metabolism. Adverse effects include life-threatening respiratory depression. Monitor for changes in the therapeutic and adverse effects of fentanyl if voriconazole is initiated, discontinued or dose changed.
Liều Lượng & Cách Dùng :
Injection, solution - Intravenous - 0.05 mg/mL
Lozenge - Oral - 200 mcg; 400 mcg; 600 mcg; 800 mcg; 1200 mcg; 1600 mcg
Patch - Transdermal
Solution - Nasal - 400 mcg/spray
Spray - Sublingual - 100 mcg; 200 mcg; 400 mcg; 600 mcg; 800 mcg
Tablet - Buccal - 100 mcg; 200 mcg; 400 mcg; 600 mcg; 800 mcg
Tablet - Sublingual - 100 mcg; 200 mcg; 300 mcg; 400 mcg; 600 mcg; 800 mcg
Dữ Kiện Thương Mại
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Nhà Sản Xuất
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Sản phẩm biệt dược : Abstral
-
Sản phẩm biệt dược : Actiq
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Sản phẩm biệt dược : Duragesic
-
Sản phẩm biệt dược : Durogesic
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Sản phẩm biệt dược : Fentanest
-
Sản phẩm biệt dược : Lazanda
-
Sản phẩm biệt dược : Nasalfent
-
Sản phẩm biệt dược : Rapinyl
-
Sản phẩm biệt dược : Subsys
Tài Liệu Tham Khảo Thêm
National Drug Code Directory