Viagra vs Levitra
Viagra thiab Levitra yog cov tshuaj tiv thaiv erectile kawg. Ob leeg koom nrog hauv chav kawm ntawm PDE-5 inhibitors thiab tau pom zoo los ntawm FDA. Viagra yog nrov ntawm ntau ntau. Lub hauv paus mechanism ntawm cov tshuaj no yog tib yam. Lawv pab ua kom cov ntshav khiav thiab ua rau erection.
Viagra
Cov tshuaj lom neeg hauv Viagra yog sildenafil citrate. Cov tshuaj siv sijhawm li ib nrab teev los pib nws txoj haujlwm thiab cov teebmeem yuav kav li plaub teev. Cov koob tshuaj uas yuav tsum tau ua kom tau txais cov tshuaj lom neeg yog siab dua. Nws yog thawj zaug pom zoo tshuaj ntawm PDE-5 inhibitors.
PDE-5 inhibitors inhibits qhov kev ua ntawm phosphodiesterase hom 5 uas ua rau degradation ntawm cyclic GMP hauv cov leeg nqaij. Lub enzyme yog tam sim no nyob rau hauv cov nqaij mos hlwb ntawm noov thiab cov hlab ntsha ntawm lub ntsws. Li no cov tshuaj tau paub tias muaj txiaj ntsig zoo hauv kev kho mob ntsws pulmonary hypertension.
Levitra
Levitra yog lub npe ntawm vardenafil hydrochloride. Cov tshuaj feem ntau yog siv los kho erectile kawg thiab cov teebmeem tau tshaj tawm tias yuav kav ntev. Lub sijhawm rau qhov pib ntawm kev ua haujlwm lom neeg kuj tsawg. Cov tshuaj muaj txiaj ntsig zoo ntawm cov tshuaj me me ntawm 10-20 mg. Contraindications thiab cov kev phiv tshwm sim tau raug qhia.
Qhov txawv ntawm Viagra thiab Levitra
1. Chav kawm tshuaj - ob leeg koom rau tib chav kawm ntawm cov tshuaj PDE-5 inhibitors.
2. Mechanism ntawm kev ua - lawv tau pom los thaiv qhov kev ua tsis zoo ntawm Phosphodiesterase hom 5 ntawm cyclic GMP pom nyob rau hauv cov leeg nqaij ntawm qhov chaw mos thiab cov phab ntsa ntawm lub ntsws. Qib siab cGMP tso cai rau cov leeg nqaij du thiab cov ntshav ntws zoo dua. Cov ntshav ntws nce ntau ua rau erection.
3. Lub sijhawm pib ntawm kev ua lom lom - Ob leeg siv sijhawm zoo sib xws rau kev pib ua haujlwm lom neeg. Txawm li cas los xij, cov txiaj ntsig tau tshaj tawm yog tias Viagra tau noj tsawg kawg 1 teev ua ntej kev sib deev. Levitra ntawm qhov tod tes yuav tsum tau noj ua ntej ib nrab teev.
4. Lub sij hawm ntawm kev ua tau zoo - Viagra cov teebmeem paub tias yuav kav ntev li plaub teev thaum L: evitra muab lub sijhawm ntev dua mus txog 6 teev.
5. Kev pom zoo los ntawm FDA- Ob qho tshuaj tau pom zoo los ntawm FDA thiab yog cov tshuaj noj. Viagra yog muag yam tsis muaj tshuaj nyob hauv qee lub tebchaws.
6. Cov kev mob tshwm sim - Feem ntau ntawm cov kev mob tshwm sim yog tshwm sim rau ob qho tshuaj thiab suav nrog mob taub hau, txawv txav los yog qhov muag tsis pom kev, raws plab, tso zis nyuaj thiab lwm yam. Levitra pom tias muaj qhov sib piv tsis tshua muaj tshwm sim los ntawm kev siv tshuaj tsawg.
7. Contraindications - Cov tshuaj tsis pom zoo rau cov neeg mob ntawm cov tshuaj nitrate thiab qee yam kab mob plawv.
