Vardenafil Better Choice for Premature Ejaculation

Total Page:16

File Type:pdf, Size:1020Kb

Vardenafil Better Choice for Premature Ejaculation August 15, 2005 • www.familypracticenews.com Men’s Health 47 Vardenafil Better Choice for Premature Ejaculation BY ROBERT FINN (24%) of the men and was secondary (in On a self-rating scale of 0-8, where 0 Center but is now at the University of San Francisco Bureau most cases to erectile dysfunction) in the means PE almost never, 4 means PE about Hamburg. remaining 26 men (77%). half the time, and 8 means PE almost al- Self-ratings of sexual satisfaction, on a 0- S AN A NTONIO — Vardenafil improved After a 4-week run-in period, 17 men ways, the mean score was 6.14 at baseline, 5 scale, where 0 means not at all satisfied premature ejaculation more than sertra- were given 10-mg vardenafil 10 minutes 4.28 with sertraline, and 3.2 with varde- and 5 means extremely satisfied, averaged line, Frank Sommer, M.D., reported at the before intercourse for 6 weeks. The other nafil. 1.4 at baseline, 3.2 with sertraline, and 4.2 annual meeting of the American Urolog- 17 received 50 mg of sertraline 4 hours be- IVELT, as measured by a stopwatch, with vardenafil. In addition, the partners’ ical Association. fore intercourse. averaged 0.54 minutes at baseline, 2.87 sexual satisfaction showed significant in- Both vardenafil (Levitra), a phosphodi- After a 1-week washout period, the men minutes with sertraline, and 5.23 minutes creases for sertraline and even more so for esterase-5 inhibitor, and sertraline (Zoloft), who had been receiving sertraline with vardenafil, reported Dr. Sommer, vardenafil. a selective serotonin reuptake inhibitor, re- switched to vardenafil and vice versa for who conducted the research at the Dr. Sommer stated that he had no con- sulted in significant improvements in sev- an additional 6 weeks. Cologne (Germany) University Medical flicts of interest related to his study. ■ eral measures of premature ejaculation (PE) over baseline, but vardenafil proved significantly better than sertraline on all measures. The relatively small, crossover study in- #1 RECOMMENDED METER* volved 34 heterosexual men who report- ed PE more than half the time and who had intravaginal ejaculatory latency times (IVELT) of less than 1.5 minutes at base- line. PE was the primary complaint in 8 FDA: Vision Loss Reported With ED Drug Use he Food and Drug Administration has Tapproved revised labeling for Cialis (tadalafil), Levitra (vardenafil), and Viagra (sildenafil) to reflect a small number of postmarketing reports of sudden vision loss. The sudden loss of eyesight is attributed to nonarteritic ischemic optic neuropathy, in which blood flow is blocked to the op- tic nerve. It’s not known if these erectile dysfunction medications cause this condi- tion. People with a higher chance of de- veloping this condition include those who: Ǡ Have heart disease. Ǡ Are older than 50 years. Ǡ Have diabetes. Ǡ Have high blood pressure. Ǡ Have high cholesterol. Ǡ Smoke. Ǡ Have certain eye problems. Patients taking these medications are advised to discontinue use and contact their physician immediately if they expe- rience sudden vision loss or decreased vi- sion in one or both eyes. In addition, pa- tients taking or considering these products UNLESS HE TESTS WITH ONETOUCH® ULTRA.® should inform their physician if they have ever had severe loss of vision, which could The blues are in his blood. Fortunately, OneTouch® Ultra® requires so little that B.B. reflect a prior episode of nonarteritic is- can also test on his arm† when he wants to save those sensitive fingers for what they chemic optic neuropathy. Such patients do best. Either way, he’ll get a less painful test** with results in just five seconds. have an increased risk of developing the condition again. Less pain. Less blood. Less time. More compliance. For additional information about la- More info? Call 1-800-524-7226 or visit www.LifeScan.com. beling changes to Cialis, visit www.fda. gov/cder/drug/infopage/cialis/ default.htm. For additional information about la- beling changes to Levitra, visit www.fda. gov/cder/drug/infopage/vardenafil/ default.htm. *Recommended by Diabetologists, Endocrinologists, Diabetes Educators, and Pharmacists, PET Tracking Study, Fall 2002. †Whenting ontes the arm, patients should read the owner’s booklet and talk to their healthcare professional. **Allows for a less painful stick when used with OneTouch® UltraSoft® Adjustable Blood Sampler For additional information about la- and OneTouch® UltraSoft® Lancets. © 2005 LifeScan, Inc. Milpitas, CA 95035 1/05 AW 058-882B beling changes to Viagra, visit www. fda.gov/cder/consumerinfo/Viagra/ Viagra.htm. —Kerri Wachter.
Recommended publications
  • The Postmortem Distribution of Vardenafil (Levitra | in an Aviation
    Journal of Analytical Toxicology, Vol. 31, July/August 2007 The Postmortem Distribution of Vardenafil (Levitra| in an Aviation Accident Victim with an Unusually High Blood Concentration* Robert D. Johnson ~, Russell J. Lewis, and Mike K. Angler Downloaded from https://academic.oup.com/jat/article/31/6/328/682815 by guest on 27 September 2021 Civil Aerospace Medical Institute, Federal Aviation Administration, Analytical Toxicology and Accident Research Laboratory, AAM-610, CAMI Building, 6500 S. MacArthur Blvd., Oklahoma City, Oklahoma 73169-6901 I Abstract phodiesterase type 5 enzyme (PDE5) found predominantly in the penile corpus cavernosum (2-7). Vardenafil (tevitra) is one of the most widely prescribed Vardenafil undergoes hepatic metabolism, producing the treatments for erectile dysfunction. This report presents a active desethyl metabolite M1. M1 contributes to the ob- rapid and reliable method for the identification and quantification served pharmacological effects provided by vardenafil, as M1 of vardenafil in postmortem fluids and tissues, applies this method exhibits approximately 30% of the potency of the parent to a postmortem case, and describes the distribution of vardenafil in various fluids and tissues.This procedure utilizes sildenafil-d8, drug (1). Under steady-state conditions, the plasma concen- which is structurally closely related to vardenafil, as an tration of M1 is approximately 26% of that seen for vardenafil internal standard for more accurate and reliable quantitation. (1). After oral administration of vardenafil, peak plasma con- The method incorporates solid-phaseextraction and liquid centrations are obtained within 30-60 min (1). Vardenafil chromatography-tandem mass spectrometry (MS) and and its active metabolite have a terminal half-life of approx- MS-MS-MS utilizing an atmospheric pressure chemical imately 4-5 h (1).
    [Show full text]
  • Tainted Products Marketed As Dietary Supplements
    Tainted Products Marketed as Dietary Supplements Jason Humbert, MPS Nicole Kornspan, MPH Regulatory Operations Officer Consumer Safety Officer Food and Drug Administration Office of Regulatory Affairs Health Fraud Branch Overview • Definition of health fraud • Tainted products – then and now • Dietary Supplement Health and Education Act of 1994 (DSHEA) • Concerns related to tainted products • Enforcement challenges • Resources 2 FDA Definition of Health Fraud • The deceptive promotion, advertisement, or sale of products as being effective to diagnose, prevent, cure, treat, or mitigate disease, or to provide a beneficial effect on health, but which have not been scientifically proven safe and effective for such purposes. • May be deliberate, or done without adequate knowledge or understanding of the product. 3 Health Fraud: What are the Risks? • Direct health hazard: product is likely to cause injury, death or other serious adverse effect when used as directed • Indirect health hazard: product poses no direct hazard, but consumer is likely to delay or discontinue appropriate medical treatment by relying on product. 4 4 Tainted Products – Then • 1865-1906: “Golden age” of American quackery • 1905 estimate: 50,000 patent medicines – Drugs were bought and sold like any other consumer good. – Contain dangerous, addictive, misidentified ingredients – Alcohol, cocaine, heroin, opium, without restrictions – Did not have to disclose ingredients – No warnings about misuse – Manufacturer not listed 5 Tainted Products – Now 6 6 Dietary Supplement
    [Show full text]
  • Screening of Phosphodiesterase-5 Inhibitors and Their Analogs in Dietary Supplements by Liquid Chromatography–Hybrid Ion Trap–Time of Flight Mass Spectrometry
    molecules Article Screening of Phosphodiesterase-5 Inhibitors and Their Analogs in Dietary Supplements by Liquid Chromatography–Hybrid Ion Trap–Time of Flight Mass Spectrometry 1,2, 1,3, 4 5 3 Unyong Kim y, Hyun-Deok Cho y, Myung Hee Kang , Joon Hyuk Suh , Han Young Eom , Junghyun Kim 6, Sumin Seo 1, Gunwoo Kim 1, Hye Ryoung Koo 1, Nary Ha 1, Un Tak Song 1 and Sang Beom Han 1,* 1 Department of Pharmaceutical Analysis, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea; [email protected] (U.K.); [email protected] (H.-D.C.); [email protected] (S.S.); [email protected] (G.K.); [email protected] (H.R.K); [email protected] (N.H.); [email protected] (U.T.S.) 2 Biocomplete Co., Ltd., 272 Digital-ro, Guro-gu, Seoul 08389, Korea 3 Bioanalysis and Pharmacokinetics Study Group, Korea Institute of Toxicology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Korea; [email protected] 4 Agro-Livestock and Fishery Products Division, Busan Regional Korea Food and Drug Administration, 222 Geoje-daero, Yunje-gu, Busan 47537, Korea; [email protected] 5 Department of Food Science and Human Nutrition, Citrus Research and Education Center, University of Florida, 700 Experiment Station Rd, Lake Alfred, FL 33850, USA; joonhyuksuh@ufl.edu 6 Forensic Toxicology Division, National Forensic Service, 10 Ipchoon-ro, Wonju, Gangwon-do 26460, Korea; [email protected] * Correspondence: [email protected]; Tel.: +82-2-820-5596 These authors contributed equally to this work. y Received: 22 May 2020; Accepted: 9 June 2020; Published: 12 June 2020 Abstract: An accurate and reliable method based on ion trap–time of flight mass spectrometry (IT–TOF MS) was developed for screening phosphodiesterase-5 inhibitors, including sildenafil, vardenafil, and tadalafil, and their analogs in dietary supplements.
    [Show full text]
  • Pharmacy and Poisons (Third and Fourth Schedule Amendment) Order 2017
    Q UO N T FA R U T A F E BERMUDA PHARMACY AND POISONS (THIRD AND FOURTH SCHEDULE AMENDMENT) ORDER 2017 BR 111 / 2017 The Minister responsible for health, in exercise of the power conferred by section 48A(1) of the Pharmacy and Poisons Act 1979, makes the following Order: Citation 1 This Order may be cited as the Pharmacy and Poisons (Third and Fourth Schedule Amendment) Order 2017. Repeals and replaces the Third and Fourth Schedule of the Pharmacy and Poisons Act 1979 2 The Third and Fourth Schedules to the Pharmacy and Poisons Act 1979 are repealed and replaced with— “THIRD SCHEDULE (Sections 25(6); 27(1))) DRUGS OBTAINABLE ONLY ON PRESCRIPTION EXCEPT WHERE SPECIFIED IN THE FOURTH SCHEDULE (PART I AND PART II) Note: The following annotations used in this Schedule have the following meanings: md (maximum dose) i.e. the maximum quantity of the substance contained in the amount of a medicinal product which is recommended to be taken or administered at any one time. 1 PHARMACY AND POISONS (THIRD AND FOURTH SCHEDULE AMENDMENT) ORDER 2017 mdd (maximum daily dose) i.e. the maximum quantity of the substance that is contained in the amount of a medicinal product which is recommended to be taken or administered in any period of 24 hours. mg milligram ms (maximum strength) i.e. either or, if so specified, both of the following: (a) the maximum quantity of the substance by weight or volume that is contained in the dosage unit of a medicinal product; or (b) the maximum percentage of the substance contained in a medicinal product calculated in terms of w/w, w/v, v/w, or v/v, as appropriate.
    [Show full text]
  • Wo 2010/075090 A2
    (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date 1 July 2010 (01.07.2010) WO 2010/075090 A2 (51) International Patent Classification: (81) Designated States (unless otherwise indicated, for every C07D 409/14 (2006.01) A61K 31/7028 (2006.01) kind of national protection available): AE, AG, AL, AM, C07D 409/12 (2006.01) A61P 11/06 (2006.01) AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, (21) International Application Number: DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, PCT/US2009/068073 HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, (22) International Filing Date: KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, 15 December 2009 (15.12.2009) ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, (25) Filing Language: English SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, (26) Publication Language: English TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (30) Priority Data: (84) Designated States (unless otherwise indicated, for every 61/122,478 15 December 2008 (15.12.2008) US kind of regional protection available): ARIPO (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, (71) Applicant (for all designated States except US): AUS- ZW), Eurasian (AM, AZ, BY, KG, KZ, MD, RU, TJ, PEX PHARMACEUTICALS, INC.
    [Show full text]
  • Repurposing Erectile Dysfunction Drugs Tadalafil and Vardenafil to Increase Bone Mass
    Repurposing erectile dysfunction drugs tadalafil and vardenafil to increase bone mass Se-Min Kima,b,1, Charit Tanejaa,b, Helena Perez-Penac, Vitaly Ryua,b, Anisa Gumerovaa,b, Wenliang Lic, Naseer Ahmada,b, Ling-Ling Zhua,b, Peng Liua,b, Mehr Mathewa,b, Funda Korkmaza,b, Sakshi Geraa,b, Damini Santa,b, Elina Hadeliaa,b, Kseniia Ievlevaa,b,d, Tan-Chun Kuoa,b, Hirotaka Miyashitaa,b, Li Liue,f, Irina Tourkovae,f, Sarah Stanleyb, Daria Liznevaa,b, Jameel Iqbala,b, Li Suna,b, Ronald Tamlerb, Harry C. Blaire,f, Maria I. Newa,g,1, Shozeb Haiderc, Tony Yuena,b,2, and Mone Zaidia,b,2 aThe Mount Sinai Bone Program, Icahn School of Medicine at Mount Sinai, New York, NY 10029; bDepartment of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY 10029; cDepartment of Pharmaceutical and Biological Chemistry, University College London School of Pharmacy, WC1N 1AX London, United Kingdom; dDepartment of Reproductive Health, Scientific Center for Family Health and Human Reproduction Problems, 664003 Irkutsk, Russian Federation; eDepartment of Pathology, Pittsburgh Veterans Affairs Healthcare System, Pittsburgh, PA 15240; fDepartment of Pathology, University of Pittsburgh, Pittsburgh, PA 15261; and gDepartment of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY 10029 Contributed by Maria I. New, April 17, 2020 (sent for review January 27, 2020; reviewed by Yousef Abu-Amer, Fayez F. Safadi, and Mei Wan) We report that two widely-used drugs for erectile dysfunction, bone mass, respectively (18, 19). Likewise, soluble guanylate cy- tadalafil and vardenafil, trigger bone gain in mice through a com- clase has also been targeted for bone gain (20, 21).
    [Show full text]
  • LEVITRA (Vardenafil Hcl) Tablets
    LEVITRA (vardenafil HCl) Tablets DESCRIPTION LEVITRA® is an oral therapy for the treatment of erectile dysfunction. This monohydrochloride salt of vardenafil is a selective inhibitor of cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase type 5 (PDE5). Vardenafil HCl is designated chemically as piperazine, 1-[[3-(1,4-dihydro-5- methyl-4-oxo-7-propylimidazo[5,1-f][1,2,4]triazin-2-yl)-4- ethoxyphenyl]sulfonyl]-4-ethyl-, monohydrochloride and has the following structural formula: O O HN N x HCl x 3H2O N N O S O N N Vardenafil HCl is a nearly colorless, solid substance with a molecular weight of 579.1 g/mol and a solubility of 0.11 mg/mL in water. LEVITRA is formulated as orange, round, film-coated tablets with "BAYER" cross debossed on one side and "2.5", "5", "10", and "20" on the other side corresponding to 2.5 mg, 5 mg, 10 mg, and 20 mg of vardenafil, respectively. In addition to the active ingredient, vardenafil HCl, each tablet contains microcrystalline cellulose, crospovidone, colloidal silicon dioxide, magnesium stearate, hypromellose, polyethylene glycol, titanium dioxide, yellow ferric oxide, and red ferric oxide. CLINICAL PHARMACOLOGY Mechanism of Action Penile erection is a hemodynamic process initiated by the relaxation of smooth muscle in the corpus cavernosum and its associated arterioles. During sexual stimulation, nitric oxide is released from nerve endings and endothelial cells in the corpus cavernosum. Nitric oxide activates the enzyme guanylate cyclase resulting in increased synthesis of cyclic guanosine monophosphate (cGMP) in the smooth muscle cells of the corpus cavernosum. The cGMP in turn triggers smooth muscle relaxation, allowing increased blood flow into the penis, resulting in erection.
    [Show full text]
  • Phosphodiesterase (PDE)
    Phosphodiesterase (PDE) Phosphodiesterase (PDE) is any enzyme that breaks a phosphodiester bond. Usually, people speaking of phosphodiesterase are referring to cyclic nucleotide phosphodiesterases, which have great clinical significance and are described below. However, there are many other families of phosphodiesterases, including phospholipases C and D, autotaxin, sphingomyelin phosphodiesterase, DNases, RNases, and restriction endonucleases, as well as numerous less-well-characterized small-molecule phosphodiesterases. The cyclic nucleotide phosphodiesterases comprise a group of enzymes that degrade the phosphodiester bond in the second messenger molecules cAMP and cGMP. They regulate the localization, duration, and amplitude of cyclic nucleotide signaling within subcellular domains. PDEs are therefore important regulators ofsignal transduction mediated by these second messenger molecules. www.MedChemExpress.com 1 Phosphodiesterase (PDE) Inhibitors, Activators & Modulators (+)-Medioresinol Di-O-β-D-glucopyranoside (R)-(-)-Rolipram Cat. No.: HY-N8209 ((R)-Rolipram; (-)-Rolipram) Cat. No.: HY-16900A (+)-Medioresinol Di-O-β-D-glucopyranoside is a (R)-(-)-Rolipram is the R-enantiomer of Rolipram. lignan glucoside with strong inhibitory activity Rolipram is a selective inhibitor of of 3', 5'-cyclic monophosphate (cyclic AMP) phosphodiesterases PDE4 with IC50 of 3 nM, 130 nM phosphodiesterase. and 240 nM for PDE4A, PDE4B, and PDE4D, respectively. Purity: >98% Purity: 99.91% Clinical Data: No Development Reported Clinical Data: No Development Reported Size: 1 mg, 5 mg Size: 10 mM × 1 mL, 10 mg, 50 mg (R)-DNMDP (S)-(+)-Rolipram Cat. No.: HY-122751 ((+)-Rolipram; (S)-Rolipram) Cat. No.: HY-B0392 (R)-DNMDP is a potent and selective cancer cell (S)-(+)-Rolipram ((+)-Rolipram) is a cyclic cytotoxic agent. (R)-DNMDP, the R-form of DNMDP, AMP(cAMP)-specific phosphodiesterase (PDE) binds PDE3A directly.
    [Show full text]
  • Phosphodiesterase Type 5 Inhibitors for the Treatment of Erectile Dysfunction in Patients with Diabetes Mellitus
    International Journal of Impotence Research (2002) 14, 466–471 ß 2002 Nature Publishing Group All rights reserved 0955-9930/02 $25.00 www.nature.com/ijir Phosphodiesterase type 5 inhibitors for the treatment of erectile dysfunction in patients with diabetes mellitus MA Vickers1,2* and R Satyanarayana1 1Department of Surgery, Togus VA Medical Center, Togus, Maine, USA; and 2Department of Surgery, Division of Urology, University of Massachusetts Medical School, Worcester, Massachusetts, USA Sildenafil, a phosphodiesterase 5 (PDE5) inhibitor, has become a first-line therapy for diabetic patients with erectile dysfunction (ED). The efficacy in this subgroup, based on the Global Efficacy Question, is 56% vs 84% in a selected group of non-diabetic men with ED. Two novel PDE5 inhibitors, tadalafil (Lilly ICOS) and vardenafil (Bayer), have recently completed efficacy and safety clinical trials in ‘general’ and diabetic study populations and are now candidates for US FDA approval. A summary analysis of the phase three clinical trials of sildenafil, tadalafil and vardenafil in both study populations is presented to provide a foundation on which the evaluation of the role of the individual PDE5 inhibitors for the treatment of patients with ED and DM can be built. International Journal of Impotence Research (2002) 14, 466–471. doi:10.1038=sj.ijir.3900910 Keywords: phosphodiesterase inhibitor; erectile dysfunction; diabetes mellitus; sildenafil; tadalafil; vardenafil Introduction (NO), vasointestinal peptide and prostacyclin, de- creases. Additionally, the endothelial cells that line the cavernosal arteries and sinusoids have a Pathophysiology of ED in diabetes decreased response to nitric oxide due to increased production of advanced glycation end-products and changes associated with insulin resistance.5,6 The Diabetes mellitus is a risk factor for erectile diabetic also experiences a decreased level of dysfunction (ED).
    [Show full text]
  • Guideline for Preoperative Medication Management
    Guideline: Preoperative Medication Management Guideline for Preoperative Medication Management Purpose of Guideline: To provide guidance to physicians, advanced practice providers (APPs), pharmacists, and nurses regarding medication management in the preoperative setting. Background: Appropriate perioperative medication management is essential to ensure positive surgical outcomes and prevent medication misadventures.1 Results from a prospective analysis of 1,025 patients admitted to a general surgical unit concluded that patients on at least one medication for a chronic disease are 2.7 times more likely to experience surgical complications compared with those not taking any medications. As the aging population requires more medication use and the availability of various nonprescription medications continues to increase, so does the risk of polypharmacy and the need for perioperative medication guidance.2 There are no well-designed trials to support evidence-based recommendations for perioperative medication management; however, general principles and best practice approaches are available. General considerations for perioperative medication management include a thorough medication history, understanding of the medication pharmacokinetics and potential for withdrawal symptoms, understanding the risks associated with the surgical procedure and the risks of medication discontinuation based on the intended indication. Clinical judgement must be exercised, especially if medication pharmacokinetics are not predictable or there are significant risks associated with inappropriate medication withdrawal (eg, tolerance) or continuation (eg, postsurgical infection).2 Clinical Assessment: Prior to instructing the patient on preoperative medication management, completion of a thorough medication history is recommended – including all information on prescription medications, over-the-counter medications, “as needed” medications, vitamins, supplements, and herbal medications. Allergies should also be verified and documented.
    [Show full text]
  • Drug-Facilitated Sexual Assault Panel, Blood
    DRUG-FACILITATED SEXUAL ASSAULT PANEL, BLOOD Blood Specimens (Order Code 70500) Alcohols Analgesics, cont. Anticonvulsants, cont. Antihistamines, cont. Ethanol Phenylbutazone Phenytoin Cyclizine Amphetamines Piroxicam Pregabalin Diphenhydramine Amphetamine Salicylic Acid* Primidone Doxylamine BDB Sulindac* Topiramate Fexofenadine Benzphetamine Tapentadol Zonisamide Guaifenesin Ephedrine Tizanidine Antidepressants Hydroxyzine MDA Tolmetin Amitriptyline Loratadine MDMA Tramadol Amoxapine Oxymetazoline* Mescaline* Anesthetics Bupropion Pyrilamine Methcathinone Benzocaine Citalopram Tetrahydrozoline Methamphetamine Bupivacaine Clomipramine Triprolidine Phentermine Etomidate Desipramine Antipsychotics PMA Ketamine Desmethylclomipramine 9-hydroxyrisperidone Phenylpropanolamine Lidocaine Dosulepin Aripiprazole Pseudoephedrine Mepivacaine Doxepin Buspirone Analgesics Methoxetamine Duloxetine Chlorpromazine Acetaminophen Midazolam Fluoxetine Clozapine Baclofen Norketamine Fluvoxamine Fluphenazine Buprenorphine Pramoxine* Imipramine Haloperidol Carisoprodol Procaine 1,3-chlorophenylpiperazine (mCPP) Mesoridazine Cyclobenzaprine Rocuronium Mianserin* Norclozapine Diclofenac Ropivacaine Mirtazapine Olanzapine Etodolac Antibiotics Nefazodone Perphenazine Fenoprofen Azithromycin* Nordoxepin Pimozide Hydroxychloroquine Chloramphenicol* Norfluoxetine Prochlorperazine Ibuprofen Ciprofloxacin* Norsertraline Quetiapine Ketoprofen Clindamycin* Nortriptyline Risperidone Ketorolac Erythromycin* Norvenlafaxine Thioridazine Meclofenamic Acid* Levofloxacin* Paroxetine
    [Show full text]
  • 1.0 INTRODUCTION the Aim of This Work Is to Validate the Analytical
    1.0 INTRODUCTION The aim of this work is to validate the analytical method of quantifying Sildenafil, Vardenafil, Tadalafil and their analogues (Hydroxyhomosildenafil, Norneosildenafil, Acetildenafil, Homosildenafil, Aminotadalafil, Thiosildenafil, N- Desmethylacetildenafil, Thiohomosildenafil, Gendenafil, Carbodenafil, Hydroxythiohomosildenafil, N-Desethylvardenafil, N-Desmethylsildenafil, Udenafil, Hydroxyacetildenafil, Piperiacetildenafil, Dimethylsildenafil, Chloropretadalafil, and Noracetildenafil) using the Liquid Chromatography Tandem Mass Spectrometer (LC- MS/MS) system. This method has been accredited and used daily in the forensic division of the Department of Chemistry (DOC), Malaysia. Sildenafil Citrate (Viagra®), Vardenafil (Levitra®) and Tadalafil (Cialis®) are the only phosphodiesterase-5 (PDE5) enzyme inhibitors approved by the Food and Drugs Administration (FDA) in United State of America to treat male sex problem function or erectile dysfunction if and only if the consumption of those drugs need to be followed and supervised by physicians due to its harmful side-effects. A Phosphodiesterase type 5 inhibitor, often shortened to PDE5 inhibitor, are a drug used to block the degradative action phosphodiesterase-5 enzyme on cyclic GMP in the smooth muscle cells lining the blood vessels supplying one of the part of the penis named corpus cavernosum. Corpus cavernosum is one of a pair of sponge like regions of erectile tissue which contain most of the blood in penis during penile erection (Marshall). Analogue is the term refers to structural derivative of a parent compound that often differs from it by a single element. Or in simple terms can describe as a substance that has major chemical structures in common with another chemical. Unfortunately, no toxicological data of these analogues published and the safety of its largely unknown 1 and unpredictable (James, 2007).
    [Show full text]