what is difference between cialis viagra and levitra

what is difference between cialis viagra and levitra




п»ї

Comparison of Viagra, Levitra and Cialis

Male sexual dysfunction is one of the most common health problems affecting men and is more common with increasing age. Chronic ED affects about 5% of men in their 40s and 15пїЅ25% of men by the age of 65. Transient ED and inadequate erection affect as many as 50% of men between the ages of 40 and 70.

In around 95% of the cases, a satisfactory treatment can be found. Erectile dysfunction is treatable at any age, and awareness of this fact has been growing. More men have been seeking help and returning to normal sexual activity because of improved, successful treatments for erectile dysfunction.

Three PDE-5 inhibitors

Currently, there are three oral medications approved by the FDA for the treatment of erectile dysfunction: sildenafil (Viagra), vardenafil (Levitra), and tadalafil (Cialis). They block the enzyme phosphodiesterase type 5 (PDE-5) and belong to a class called phosphodiesterase (PDE) inhibitors.

Since introduction of the first PDE-5 inhibitor Viagra, there has been a fundamental change in the treatment of erectile dysfunction. Although there are a number of options available for non-surgical treatment, it is clear that oral therapy has revolutionized the treatment approach to patients with erectile dysfunction. The development of the PDE-5 inhibitors Levitra and Cialis prompts the question of whether and how these sexual medications differ in terms of their efficacy and adverse effects.

Viagra was the first and is probably the most famous of the three PDE-5 inhibitors used to treat erectile dysfunction. Viagra was approved for erectile dysfunction in March 27, 1998. Viagra is manufactured by Pfizer, Inc.

Levitra was the second PDE-5 inhibitor to come to market in the United States, and it was approved by the FDA in August 19, 2003. Levitra is manufactured by Bayer Pharmaceuticals Corporation.

Cialis was the third PDE-5 inhibitor to come to market in the United States and was approved by the FDA at the end of November 21, 2003. Cialis is manufactured by Lilly ICOS LLC.

The major advantage of these medications for sexual enhancement is that they do not cause an erection at inappropriate times, because they act only in response to sexual stimulation. If there is no sexual stimulation drug remains in the background. All three are taken orally prior to planned sexual activity, acting to increase blood flow in the penis in response to sexual stimulation. However, there are important differences between the three, differences that could influence safety, specificity, duration of action, adverse effects, and ultimately, public acceptance within this class.

back pain, muscle aches, nasal congestion, facial flushing, dizziness

Mechanism of action

Sildenafil, vardenafil, and tadalafil do not directly cause an erection of the penis, but they alter the body's response to sexual stimulation by enhancing the effect of the nitric oxide, a chemical that is normally released during stimulation. Nitric oxide causes relaxation of the muscles in the penis, which allows for better blood flow to the penile area.

All PDE-5 inhibitors have demonstrated excellent efficacy in general and in specific populations (eg, men with diabetes mellitus or those who have undergone radical prostatectomy). Viagra, at 84%, is slightly more effective than Levitra at 80% and Cialis at 81%.

Viagra and Levitra differ only minimally in terms of their structure, while Cialis differs markedly from Viagra and Levitra in terms of its molecular structure, which is also reflected in pharmacokinetic differences.

  • Viagra. 25 mg, 50 mg 100 mg tablets
    • Onset of action. 30 minutes (effect delayed if taken with food)
    • Duration of action. 4 to 5 hours
  • Levitra. 2.5 mg, 5 mg, 10 mg, 20 mg tablets
    • Onset of action. 25 minutes (effect delayed by fatty meal)
    • Duration of action. 4 to 5 hours
  • Cialis. 5 mg, 10 mg, 20 mg tablets
    • Onset of action. 16-45 minutes (effect NOT delayed by food)
    • Duration of action. 36 hours

Viagra does not work as well as it would otherwise if you eat a high-fat meal around the time you take it. Viagra should be taken on an empty stomach. Levitra may be slightly less effective if you eat a high-fat meal, but a moderate-fat meal does not reduce its effectiveness. Cialis works without regard to what you eat.

Viagra and Levitra have similar half-lives, and onset and duration of action. Cialis has a slower onset of action and longer duration of action, which is attributed to its longer half-life.

Men who wish for spontaneity may opt for Cialis, which may allow for successful intercourse up to 36 hours postdose, even though it takes longer to reach peak effect. The considerably longer duration of effect for Cialis will likely allow less frequent dosing and greater impulsiveness between partners, but also could potentially prolong adverse effects.

PDE-5 inhibitors are primarily excreted via the fecal route with varying percentages eliminated renally.

The recommended dose for Viagra is 50 mg, and the physician may adjust this dose to 100 mg or 25 mg, depending on the patient.

The recommended dose for either Levitra or Cialis is 10 mg, and the physician may adjust this dose to 20 mg if 10 mg is insufficient. A lower dose of 5 mg is available for men who take other medicines or have conditions that may decrease the body's ability to use the drug. Levitra is also available in a 2.5 mg dose.

None of these PDE-5 inhibitors should be used more than once a day.

Most common side effects:

  • Viagra. headache, epistaxis, flushing, indigestion, dizziness, nasal congestion, abnormal vision
  • Levitra. headache, flushing, indigestion, nausea, dizziness, nasal congestion
  • Cialis. headache, indigestion, back pain

PDE-5 inhibitors are generally well tolerated. Side effects include headache, flushing, dyspepsia, and nasal congestion.

Visual abnormalities are encountered with Viagra, but are less likely with Levitra and unlikely with Cialis. Flushing and dyspepsia that are associated with Viagra and Levitra are less common with Cialis. Back pain and muscle aches (myalgia) may occur with Cialis, but are unusual with either Viagra or Levitra. Side effects of Cialis tend to last longer, but are less marked than with the other drugs.

Precautions and contraindications

All PDE-5 inhibitors are absolutely contraindicated in persons who take organic nitrates, because they induce vasodilation.

The FDA no longer considers concomitant use of alpha-blockers a contraindication to use of PDE-5 inhibitors. However, persons on alpha-blockers must be on a stable dose of alpha-blocker prior to using a PDE-5 inhibitor.

Since both Viagra and Levitra have moderate vasodilatory and hypotensive effects, they should not be given in the presence of marked arterial or orthostatic hypotension, and should only be administered with caution in aortic stenosis or hypertrophic obstructive cardiomyopathy.

Men who have had a heart attack or stroke within the past 6 months and those with certain medical conditions (e.g. uncontrolled high blood pressure, severe low blood pressure or liver disease, unstable angina) that make sexual activity inadvisable should not take Cialis. Dosages of the drug should be limited in patients with kidney or liver disorders.

The differences between the 3 drugs are not great. All appear to be effective and safe. Levitra has less side effects compared to Viagra and lasts about the same time as Viagra in the body. Cialis has few side effects and lasts longer in the body to increase spontaneity than either Levitra or Viagra and there is no reduction in absorption when Cialis is taken with food. However, the longer half-life imposes increased risk for drug interactions.

  • 1. The Merck Manual of Medical Information. Mark H. Beers et al. eds. 2nd Home Edition. Whitehouse Station, NJ: Merck; 2003.
  • 2. Doggrell SA. Comparison of clinical trials with sildenafil, vardenafil and tadalafil in erectile dysfunction. Expert Opin Pharmacother. 2005 Jan;6(1):75-84.
  • 3. Viagra Prescribing Information PDF
  • 4. Levitra Prescribing Information PDF
  • 5. Cialis Prescribing Information PDF

Published: May 05, 2007
Last updated: March 24, 2016

Difference between levitra and cialis

levitra

I have also taken your advice and researched the link between alcoholism and erectile dysfunction. VERY SCARY STUFF. So scary in fact that I admitted to him that I had looked into it and gave the info to him to read. Must of worried him as well, as he has agreed to give up drinking at home altogether (something I have wanted him to do since our son was born) and to only drink light beer when he is at the pub on the weekends.

I also use to suffer from extreme and constant fatigue and loss of strength. I no longer have the fatigue problem and my strength is back thanks to Testosterone Therapy having boosted my T levels to about 780. Even so I still suffer from the ED. I can achieve about a 3/4 errection but never a fully very hard erection. The one I do achieve require much effort on my part ,if not I will loose the errection as quick as it came.

I also do not understand why the u urologist did not test further for anything and was content to just give him some Levitra to try. And like the nocturnal erections, the Levitra erections do not stay and fail before ejaculation. You have almost loving wife who so for you to help you in any way she can to final solution. And your love to her is so evident as well to follow up with her ideas..you must be a great couple.

hello everyone, I am a 20 year old male who has been masturbating since a very young age( maybe 9 years old). I used to masturbate everyday when i was younger, and still masturbate every other day on average but i prolong my masturbation, so i do it for hours. Now my penis has gotten sore and i only get weak erections. I feel like the harder the erection becomes the more sore it gets, so it stays really soft.

Luckily things really have changed and mainly with the meteoric arrival of the drug Viagra and then its relatives Cialis and Levitra. These drugs heralded the notion that although there might be a physical or a psychological problem, it was solvable and reliably so, by taking the medications. The arrival of these medications also opened the box of shame and enabled men to discuss the issues rather more openly.

I had a pretty good handle on the cancer, but I gained a new (better) perspective and an appreciation of what was happening to me, through me, and in me after reading it. Piper's website -- www.desiringgod.org -- has the document in text form. Though not everyone may agree 100% with everything he has written, I believe most will find a good portion of it beneficial and that what he has written will alter the way they view their cancer--or any trial. God's Peace.

. Viagra, Cialis. etc.). However, my erections are at about 80 - 85% and have a tendency to go away quickly without significant stimulation. Please note that this is also the same when it comes to masturbation on my own. I sometimes look at pornography (not often) and do not find myself getting nearly as aroused as I should. I also rarely wake up with a full erection in the mornings and when I do, they go away very quickly once I wake up.

I had my doctor prescribe me viagra, cialis or levitra to help the matter and that did not make a big difference. If I was not sexually excited, the medicine would not work. If I lost excitement during sex due to lack of penis sensation, the medicine would stop working. This has been going on for years. Between all my issues, I used to masturbate just to alleviate my sexual frustrations. I would do it once a day, twice a day, or sometimes 3-4 times a day.

[4][5] Dihydropyridines including felodipine (Plendil), nicardipine (Cardene), difedipine, nisoldipine (Sular), nitrendipine (Bayotensin)[4] losartan (Cozaar)[4] The Cough Suppressant dextromethorphan repaglinide (Prandin)[4] verapamil (Calan SR, Covera HS, Isoptin SR, Verelan)[4] Antiarrhythmics including amiodarone (Cordarone), quinidine (Quinidex, Cardioquin, Quinora), disopyramine (Norpace), propafenone (Rhythmol), and carvedilol[4] Antihistaminic terfenadine Cisapride which treat G

The doc looked at it and said he didn't know what it was all about, but gave me some samples of Viagra, Cialis. and Levitra to try. I was also on Cymbalta for depression at the time, prescribed by him. I stopped taking it after about a year and the vein thing went away and has not returned. My wife also noticed that my penis had looked smaller lately. I thought she was being funny and was going to make a comment about it "being cold" in the room, or something.

I have tried cialis, viagra and levitra with absolutely no effect apart from headaches and a redness all over my face and neck and chest.I've had a doppler scan which showed normal blood flow and no apparent problems. Ive tried the caverject injections and they give me a small erection but it hurts my penis as it feels as though its stretching my blood vessels too much. I refuse to believe that a penis can shrink in size from 7 inches to 4 1/2 inches for no reason.

I've been taking oxycodone for over a year now, and I'm wondering if there's a connection between narcotic usage for chronic pain and suppressed testosterone production.

It's kind of funny, maybe ironic - my wife works in a urologist's and brings home sample of Levitra. Viagra and Cialis. Maybe she's due for a career change.

it could be a medication he is taking and just a matter of changing it. There is Viagra and Cialis to help and for the most stubborn mind an injection which makes the little guy stand to attention no matter what. IF it is in the mind, its a tiny little needle they would not feel it. Ladies this takes a lot of tact and gentle care. imagine them as poor little souls that have.

Their knowledge was limited and knew only what their Cialis. Levitra. and Viagra reps had taught them (a bit bias to say the least). I took the pills and generally had the same problem and began to grow really concerned that a solution may not exist me. Me, being the bulheaded "never take no for an answer" son-of-a-***** that I am, decided to take this a step further and fully explore my medical state.

I watch way too much and the line between fantasy and reality is blurred. I get so remorseful but then I do it again. Any suggestions on how to stop as ED is also an issue for me.

These problems can be resolved with correct treatment and time. Penile blood flow and scrotal sensation is a complex balance between each the hormones and neurotransmitters. Testosterone helps improve blood flow through the penis. However, an excess may actually reduce blood flow. For example, testosterone can both increase and decrease blood pressure - depending on its relationship (e.g. ratio, activity, level, etc.) to other hormones such as estradiol and DHEA.

This was all comforting, since I have been developing a lot of other symptoms lately, and being the research junkie that I am, I was finding conditions matching my symptoms ranging from diabetes to cancer, and many things in between. Happily, the tests ruled out any of these conditions, and it is likely that just the anxiety from this one condition is causing all these other symptoms, each one compounding the anxiety, mimicking even more conditions.

Erectile Dysfunction: What Are The Differences Between Viagra, Levitra And Cialis?

Viagra, Levitra and Cialis are often the first treatment tried for erectiledysfunction . For most men with erectile problems, they work well and have few side effects. All three medications improve erectile function in the same basic way, but the effects of Cialis last longer. This and a few other minor differences among these medications may make one a better choice over another for some men.

Viagra. Levitra and Cialis increase levels of nitric oxide, a chemical produced by your body during sexual stimulation that causes blood vessels in the penis to relax and open. This allows you to achieve and maintain an erection. These medications don’t automatically trigger an erection; sexual arousal is needed to start the whole process.

Which is best for you ?

Viagra, Levitra and Cialis each have a slightly different chemical make up. These minor differences affect the way they work, such as how quickly they take effect and wear off; how they interact with other medications; and side effects.

Your doctor will consider these factors when deciding if one of these medications is a good choice for you. Your doctor will also consider any other health problemsyou have and whether any of your current medications could cause problems when taken with Viagra, Levitra or Cialis.

Viagra and Levitra are taken without food no more than once a day, they should be taken 30-60 minutes before sex and last up to 4 hours. Cialis can be taken with or without food, no more than once a day. It should be taken 30minutes before sex and lasts up to 36 hours

Other articles you may be interested in.

Most Recent Reviews

- Excellent service; medicines received in a timely manner; clear information and instructions; excellent pricing. Judith Woehr. Sep 9th, 2016

- I love Planet Drug. Originally I came to Planet Drug for Plavix. It sold at Walmart for $200.00 for a one month supply and there was no way I could afford that. So I thought, Why not try it? And I did and have been with them for some six or se. Karen Land. Sep 9th, 2016

- You guys are great people to work with--so efficient and speedy and polite. (My only complaint is that sometimes I get an Hispanic on the line and I then miss hearing that great Canadian speech pattern. ) Donald and Sue Clark. Sep 9th, 2016

View all 13202 reviews Leave a review

Search Articles

xenical availability on nhspenurunan berat badan dengan xenicalhow often should you take xenicalmore infoETH 125 Week 4 DQ1riesgos de xenicalMATH 533 (GM 533 DeVry Applied Managerial Statistics) Course Project; AJ Davis Department Stores (PART A, B and PART C)side effects of long term use of xenicalvisit web pagecontinue readingdissertation signature page ou dissentclick the following articlehttp://itsharenet.org/map281.phpread articlego herexenical es un quemador de grasaBUS 310 Week 9 Discussion 1

URL сайта:

 
Розташування / контакти Новини Акції Дисконтні картки

салон красоты одесса

ПРИВЕДИ ДРУЗЕЙ!

ПРИВЕДИ ДРУЗЕЙ на Обслуживание

и получи скидку от 10-15% 

+  дисконтную карту в подарок для себя и друзей!

Дорогие Студенты!

Приглашаем  Вас

На  обслуживание со скидкой – 10%

на весь спектр услуг!

Дисконтная програма

Дисконтная карта дает право на получение скидок при пользовании услугами студии определяет принадлежность держателя карты к клубу гостей нашей студии красоты. Руководство Студии Красоты «Санторини» гарантирует конфиденциальность личных данных, предоставленных владельцем при регистрации и данных, полученных при использовании дисконтных карт.

Дисконтная карта является семейной и не подлежит передаче другим лицам.   подробнее...