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.
| Product name | Vardenafil | |
| Test Items | Specification | Test Results |
| Description | White or almost white crystalline powder | White crystalline powder |
| Melting Point | 191.0~193.0°C | 192°C |
| Loss of drying | ≤1.0% | 0.5% |
| Heavy Metal | ≤20ppm | 15ppm |
| TLC | Only one spot | Only one spot |
| Assay | ≥99.5% | 99.91% |
| Conclusion | It complies with the USP 32 | |
Vardenafil Effect
Vardenafil is a PDE5 inhibitor used for treating erectile dysfunction. 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 that a nitrogen atom has different 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.
Further, Vardenafil lengthens QT interval. Therefore it should not be taken by men taking other medications that affect the QT interval (such as Amiodarone).
Vardenafil Dosage
Patients taking are usually started on a 10 mg dose, which they take no more than once daily, about one hour before sexual activity. It can take as little as 30 minutes for to work in some patients. Like with , dosages are adjusted depending on a person's reaction, with doctors generally decreasing doses to to 2.5 mg or increasing them to no more than 20 mg once a day.
Vardenafil, as with all PDE5 inhibitors, should not be used by men taking nitrate medications, because combining them with Vardenafil might provoke potentially life-threatening hypotension (low blood pressure).
Vardenafil Side Effects
Facial flushing (reddening), headaches, stomach upset, diarrhea, flu like symptoms and nausea. Vardenafil also may cause chest pain, low blood pressure, blurred vision and changes in color vision, abnormal ejaculation and priapism (painful erection).