Doublewin Biological Technology Co., Ltd.(expird)
Free supplier Enterprise Certification
- Free
supplier - 4th
years
Free supplier Enterprise Certification
Business Type:Lab/Research institutions
Product Certification&
Enterprise Certification
Country: 
China (Mainland)
Business Type:Lab/Research institutions
CAS NO.224785-90-4
1. We have experience in exporting steroids, as you know, EU places much emphasis on them, and you must find a experienced partner who will assure you;
2. Quality: Our company is a professional leading factory in China in pharmaceutical area, We had stable customers and exported to Germany, Spain, UK, USA, Australia, Middle East, and any other countries. We can provide good references about our company. As for the quality of the products, we 're sure they can satisfy you well enough;
3. Package: Professional packing with professional materials
4. Delivery: We have products in stock, and we will deliver them soon when your PO arrived.
Meanwhile we will give you the tracking number in order to make you know the exact location of the products. We will keep track of the product until they arrive you; We choose the best courier service for you, and with the delivery around 4-7 working days.
5. Service: Best Service with after-sales service and consultation.
Specifications:
Product Name: Vardenafil
CAS NO.: 224785-91-5
Molecular Formula: C23H32N6O4S
Appearance: White to almost white crystalline powder, odorless, a little acerbity
Solubility: soluble in water, ethanol
Use: It is pharmaceutical raw material, indicated for the treatment of erectile dysfunction.
Description:
Vardenafil (Levitra)- is an oral drug for the treatment of erectile dysfunction, which is manufactured by Bayer company. These pills are often rescued suffering from impotence in men when and Cialis were powerless. So, if you’ve tried any drugs to increase potency, but they have not brought tangible results, it’s time to buy Levitra or its analogs.
*********what is vardenafil
Vardenafil is just one of the most preferred treatments for impotence that functions by stopping a specific enzyme - PDE5 - from reversing the blood circulation into the tissues of the penis. Vardenafil is grouped as a PDE5 inhibitor and is made use of to manage male impotence.
*********effects about vardenafil
Vardenafil is used to treat erectile dysfunction (impotence; inability to get or keep an erection) in men. Vardenafil is in a class of medications called phosphodiesterase (PDE) inhibitors. It works by increasing blood flow to the penis during sexual stimulation. This increased blood flow can cause an erection. Vardenafil does not cure erectile dysfunction or increase sexual desire. Vardenafil does not prevent pregnancy or the spread of sexually transmitted diseases such as human immunodeficiency virus (HIV).
*********Whether there have matters need attention before using
For us,your health is the first,Some medical conditions may interact with . Tell your doctor or pharmacist if you have any medical conditions, for example:
*if you are pregnant, planning to become pregnant, or are breast-feeding
*if you are taking any prescription or nonprescription medicine,herbal preparation, or dietary supplement
*if you have allergies to medicines, foods, or other substances
*if you have heart disease, heart failure, coronary artery disease, angina (chest pain), high cholesterol levels, swelling (edema), lung disease, or sleep apnea (long pauses in breathing while you sleep)
*if you have diabetes, an enlarged prostate, kidney or liver disease, high blood calcium levels, or obesity
*if you have a history of blood clots
*********Dosage
It is available in 2.5 mg, 5 mg, 10 mg, and 20 mg doses in round orange tablets. The normal starting dose is 10 mg(roughly equivalent to 50 mg of silde/nafil). Vardenafil should be taken 1 to 2 hours prior to sexual activity, with a maximum dose frequency of once per day. In some territories, such as the UK, only certain doses may be available.Vardenafil is also available under the name Staxyn as a tablet which dissolves on the tongue rather than being swallowed in the form of a pill.
*********If there have adverse reactions during use it
1.immediately stop using it
2.Going to the hospital as soon as possible,then ask doctor about reason and suggestions
3.You can also tell me, I will do my best to help you, you are not only my customer,but also my friend
Brief History:
Vardenafil was co-marketed by Bayer Pharmaceuticals, GlaxoSmithKline, and Schering-Plough under the trade name Levitra. As of 2005, the co-promotion rights of GSK on Levitra have been returned to Bayer in many markets outside the U.S. In Italy, Bayer sells vardenafil as Levitra and GSK sells it as Vivanza. Thus, because of European Union trade rules, parallel imports might result in Vivanza sold next to Levitra in the EU.
An orally disintegrating form, marketed as Staxyn and Levitra Soft. has been gaining approvals in countries such as the United States and Canada.
Treatment of ED:
Vardenafil's indications and contra-indications are the same as with other PDE5 inhibitors; it is closely related in function to sildenafil citrate () and tadalafil (Cialis). The difference between the vardenafil molecule and sildenafil citrate is a nitrogen atom's position and the change of sildenafil's piperazine ring methyl group to an ethyl group. Tadalafil is structurally different from both sildenafil and vardenafil. Vardenafil's relatively short effective time is comparable to but somewhat longer than sildenafil's.
Beyond its indications for erectile dysfunction, vardenafil may be effective in the treatment of premature ejaculation, where it may significantly increase the time from penetration to ejaculation.
How Does Vardenafil Work
It has a mechanism of action that is similar to sildenafil (), and tadalafil (Cialis). Penile erection is caused by the engorgement of the penis with blood. This engorgement occurs when the blood vessels delivering blood to the penis increase in size and increase the delivery of blood to the penis. At the same time, the blood vessels carrying blood away from the penis decrease in size and decrease the removal of blood from the penis. Sexual stimulation that leads to the engorgement and erection causes the production and release of nitric oxide in the penis. Nitric oxide then activates the enzyme, guanylate cyclase to produce cyclic guanosine monophosphate (cGMP). The cGMP is primarily responsible for increasing and decreasing the size of the blood vessels carrying blood to and from the penis, respectively. Vardenafil prevents an enzyme called phosphodiesterase-5 (PDE-5) from destroying cGMP so that cGMP persists longer. The longer cGMP persists, the more prolonged the engorgement of the penis. Vardenafil was approved by the FDA in August 2003.
Direct contact
Contraindications:
This medication is a highly effective treatment for erectile dysfunction (impotence) in men. However, it is not meant for everyone. Here are a few warnings to consider before taking Levitra:
Do not take this drug if you are being treated with other medications that contain nitrates
Do not use this medication if you suffer from retinitis pigmentosa
Avoid this product it if you are allergic to vardenafil or any other ingredients in this medicine
Do not use if you have a history of severe heart, kidney and liver problems
Do not take this medicine if you are taking drugs for HIV or fungal infections
Avoid if you have non-arteritic anterior ischaemic optic neuropathy (NAION)
Do not use if you have a condition that causes bleeding such as a stomach ulcer
Do not consume if you have sickle cell disease, bone cancer or leukaemia.
Possible Side Effects:
Levitra tablets are not known to have any serious side effects and, as a matter of fact, they probably exhibit the least negative side effects when compared to any other erectile dysfunction treatment. Mild side effects may include dizziness, facial flushing, blocked nose, nausea, impaired vision and upset stomach. If experienced, these side effects should subside within a few hours. Major side effects such as erections that last more than 4 hours, temporary vision loss or impairment of hearing are very rare. If you ever experience such effects, you need to report these immediately to a doctor.