Nhận Dạng Quốc Tế & Đặc Tính Hóa Học
Monoisotopic mass
366.219494826
InChI
InChI=1S/C24H30O3/c1-22-6-3-12(25)9-17(22)13-10-14(13)20-16(22)4-7-23(2)21(20)15-11-18(15)24(23)8-5-19(26)27-24/h9,13-16,18,20-21H,3-8,10-11H2,1-2H3/t13-,14+,15-,16+,18+,20-,21+,22-,23+,24+/m1/s1
InChI Key
InChIKey=METQSPRSQINEEU-HXCATZOESA-N
IUPAC Name
(1R,2R,4R,10R,11S,14S,15S,16S,18S,19S)-10,14-dimethylspiro[hexacyclo[9.8.0.0^{2,4}.0^{5,10}.0^{14,19}.0^{16,18}]nonadecane-15,2'-oxolan]-5-ene-5',7-dione
Traditional IUPAC Name
drospirenone
SMILES
[H][C@@]12C[C@]1([H])[C@@]1([H])[C@]3([H])[C@]4([H])C[C@]4([H])[C@@]4(CCC(=O)O4)[C@@]3(C)CC[C@]1([H])[C@@]1(C)CCC(=O)C=C21
Refractivity
101.68 m3·mol-1
Dược Lực Học :
Drospirenone differs from other synthetic progestins in that its pharmacological profile in preclinical studies shows it to be closer to the natural progesterone. As such it has anti-mineralocorticoid properties, counteracts the estrogen-stimulated activity of the renin-angiotensin-aldosterone system, and is not androgenic.
Cơ Chế Tác Dụng :
Drospirenone is a synthetic progestin that is an analog to spironolactone. It is found in a number of birth control formulations. Drospirenone differs from other synthetic progestins in that its pharmacological profile in preclinical studies shows it to be closer to the natural progesterone. As such it has anti-mineralocorticoid properties, counteracts the estrogen-stimulated activity of the renin-angiotensin-aldosterone system, and is not androgenic. It was shown in animal studies that drospirenone exhibits antiandrogenic activity judging from accessory sex gland growth in castrated, androgen-treated, juvenile rats.
Progestins such as drospirenone diffuse freely into target cells in the female reproductive tract, mammary gland, hypothalamus, and the pituitary and bind to the progesterone receptor. Once bound to the receptor, progestins slow the frequency of release of gonadotropin releasing hormone (GnRH) from the hypothalamus and blunt the pre-ovulatory LH surge.
Dược Động Học :
▧ Absorption :
Oral bioavailability is approximately 76%.
▧ Protein binding :
95-97%
▧ Metabolism :
Extensively metabolized following oral or intravenous administration. The two major metabolites are inactive and are formed independent of the CYP450 enzyme system. The metabolites are the acid form of drospirenone formed by opening of the lactone ring and the 4,5-dihydro-drospirenone-3-sulfate.
▧ Half Life :
30 hours
Chỉ Định :
For the prevention of pregnancy in women who elect an oral contraceptive.
Tương Tác Thuốc :
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Artemether
Artemether may decrease the effectiveness of drospirinone by increasing its metabolism via CYP3A4. Consider an alternate non-hormonal means of contraception during artemether therapy.
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Benazepril
Increased risk of hyperkalemia
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Bexarotene
Bexarotene may decrease the serum concentration of Contraceptives (Progestins). Since bexarotene is teratogenic and can lower serum concentrations of drospirenone, it is advised that women of childbearing potential use two forms of contraception (including at least one non-hormonal form).
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Boceprevir
Boceprevir increases levels by affecting CYP3A4 metabolism. Concomitant therapy is contraindicated.
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Candesartan
Increased risk of hyperkalemia
-
Captopril
Increased risk of hyperkalemia
-
Cilazapril
Increased risk of hyperkalemia
-
Colesevelam
Bile Acid Sequestrants may decrease the serum concentration of Contraceptives (Progestins). Administer oral progestin-containing contraceptives at least 1-4 hours prior to or 4-6 hours after administration of a bile acid sequestrant. Consider alternatives in order to avoid this combination when possible, due to the risk for impaired contraceptive effectiveness.
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Enalapril
Increased risk of hyperkalemia
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Eprosartan
Increased risk of hyperkalemia
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Fosinopril
Increased risk of hyperkalemia
-
Heparin
Heparin can increase risk of hyperkalemia for patients on drospirenone
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Irbesartan
Increased risk of hyperkalemia
-
Lisinopril
Increased risk of hyperkalemia
-
Losartan
Increased risk of hyperkalemia
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Olmesartan
Increased risk of hyperkalemia
-
Perindopril
Increased risk of hyperkalemia
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Potassium
Increased risk of hyperkalemia
-
Quinapril
Increased risk of hyperkalemia
-
Ramipril
Increased risk of hyperkalemia
-
Telmisartan
Telmisartan may increase the hyperkalemic effect of Drospirenone. Monitor for increased serum potassium concentrations during concomitant therapy.
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Thiopental
Thiopental may decrease the effect of Drospirenone. Contraceptive failure may occur. Alternative nonhomomonal contraception should be used during concomitant therapy.
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Trandolapril
Increased risk of hyperkalemia. Monitor serum potassium levels.
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Treprostinil
Additive hypotensive effect. Monitor antihypertensive therapy during concomitant use.
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Tretinoin
Oral Tretinoin may decrease the effect of oral contraceptive, Drospirenone. An alternate form of contraception should be used during concomitant therapy.
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Triamterene
Increased risk of hyperkalemia
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Warfarin
Drospirenone may alter the anticoagulant effect of warfarin. Concomitant therapy should be avoided. Monitor for changes in coagulation status if drospirenone is initiated, discontinued or dose changed.
Liều Lượng & Cách Dùng :
Tablet - Oral - 0.451 mg levomefolate calcium
Tablet - Oral - 3 mg drospirenone (DRSP), 0.03 mg ethinyl estradiol (EE) as betadex clathrate and 0.451 mg levomefol
Tài Liệu Tham Khảo Thêm
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