The History and Development of Sildenafil
Sudden vision loss in one or both eyes can be a sign of a serious eye problem called non-arteritic anterior ischemic optic neuropathy (NAION).
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What are the possible side effects of VIAGRA? an erection that will not go away (priapism). If you have an erection that lasts more than 4 hours, get medical help right away. If it is not treated right away, priapism can permanently damage your penis. sudden vision loss in one or both eyes. It is uncertain whether PDE5 inhibitors directly cause the vision loss. Stop taking VIAGRA and call your healthcare provider right away if you have sudden vision loss in one or both eyes. Some people may also have ringing in their ears (tinnitus) or dizziness.
| Product | Dosage | Quantity + Bonus | Price | |
|---|---|---|---|---|
| Viagra Generic | 150mg | 360 + 10 Pills | 423.48€ 403.31€ | |
| Viagra Generic | 100mg | 120 + 6 Pills | 149.50€ 142.38€ | |
| Viagra Original | 100mg | 76 + 4 Pills | 306.59€ 291.99€ | |
| Viagra Professional | 100mg | 120 + 4 Pills | 262.83€ 250.31€ | |
| Viagra Generic | 25mg | 10 Pills | 25.19€ 23.99€ | |
| Viagra Generic | 150mg | 60 + 4 Pills | 111.25€ 105.95€ | |
| Viagra Generic | 150mg | 90 + 6 Pills | 147.18€ 140.17€ | |
| Viagra Soft Tabs | 100mg | 120 + 8 Pills | 232.21€ 221.15€ | |
| Viagra Generic | 50mg | 270 + 8 Pills | 198.48€ 189.03€ | |
| Viagra Soft Tabs | 100mg | 180 + 10 Pills | 314.95€ 299.95€ |
If you have these symptoms, stop taking VIAGRA and contact a doctor right away. The most common side effects of VIAGRA are: abnormal vision, such as changes in color vision (such as having a blue color tinge) and blurred vision In addition, heart attack, stroke, irregular heartbeats and death have happened rarely in men taking VIAGRA. Most, but not all, of these men had heart problems before taking VIAGRA.
Lạm dụng
Do not take VIAGRA if you take any other medicines called "nitrates." Nitrates are used to treat chest pain (angina). A sudden drop in blood pressure can cause you to feel dizzy, faint, or have a heart attack or stroke. Do not take VIAGRA if you take medicines called guanylate cyclase stimulators which include: Riociguat (Adempas®) a medicine that treats pulmonary arterial hypertension and chronic-thromboembolic pulmonary hypertension. Tell all your healthcare providers that you take VIAGRA. If you need emergency medical care for a heart problem, it will be important for your healthcare provider to know when you last took VIAGRA.
What is sildenafil used for?
Stop sexual activity and get medical help right away if you get symptoms such as chest pain, dizziness, or nausea during sex. Sexual activity can put an extra strain on your heart, especially if your heart is already weak from a heart attack or heart disease. Ask your doctor if your heart is healthy enough to handle the extra strain of having sex. VIAGRA does not protect you or your partner from getting sexually transmitted diseases, including HIV—the virus that causes AIDS. VIAGRA is a prescription medicine used to treat erectile dysfunction (ED). It is not known if VIAGRA caused these problems. Tell your healthcare provider if you have any side effect that bothers viagra connect form you or does not go away. These are not all the possible side effects of VIAGRA.
- Viagra's mechanism involves inhibiting the enzyme PDE5.
- The drug requires sexual stimulation to be effective.
- Pfizer's research on sildenafil was crucial for Viagra's development.
- The medication is designed to last for about 4-6 hours.
- Viagra has been linked to minor vision changes such as blue tinting.
- It is essential to follow medical advice when using Viagra.
- Viagra's international approval varied, with some countries restricting its use.
- Pfizer invested heavily in marketing Viagra to physicians and consumers.
- The medication's popularity saw a rise alongside increased awareness of ED.
For more information, ask your healthcare provider or pharmacist. Call your doctor for medical advice about side effects.
Xem thêm
Archived from the original on 20 May 2013. ^ "Actavis Launches Generic Viagra in Europe as Patents Expire". Archived from the original on 29 October 2013. "What Will Happen When Viagra Goes Generic?". Archived from the original on 23 April 2011.
Drug Interactions Table
^ "Is Viagra about to lose its pulling power in the UK?". Archived from the original on 30 October 2013. Archived from the original on 22 August 2009. Archived from the original on 25 June 2007. "Viagra from the pharmacist: insight from reclassification in New Zealand". You may report side effects to FDA at 1-800-FDA-1088.
Cơ chế
Archived from the original on 17 May 2021. ^ "Generic Viagra developers queue up, but may have to wait". Archived from the original on 28 December 2021. ^ "Approved Viagra copies flood drugstores in Korea". ^ "Viagra prescriptions almost triple in a decade".
What should I tell my healthcare provider before taking sildenafil?
Archived from the original on 1 July 2024. ^ "MHRA reclassifies Viagra Connect tablets to a Pharmacy medicine". ^ "Viagra viagra gel to be available without prescription in UK". VIAGRA- sildenafil citrate tablet, film coated Pfizer Laboratories Div Pfizer Inc What is the most important information I should know about VIAGRA? VIAGRA can cause your blood pressure to drop suddenly to an unsafe level if it is taken with certain other medicines. Store VIAGRA at room temperature between 68°F to 77°F (20°C to 25°C).
| Medication | Generic Name | Onset of Action | Duration | Common Dosage | Notes |
|---|---|---|---|---|---|
| Viagra | Sildenafil citrate | 30-60 minutes | 4-6 hours | 50-100 mg | Most widely used ED drug |
| Cialis | Tadalafil | 30-60 minutes | Up to 36 hours | 10-20 mg | Longer-lasting effect |
| Levitra | Vardenafil | 25-60 minutes | 4-5 hours | 10-20 mg | Similar to Viagra, different formulation |
Keep VIAGRA and all medicines out of the reach of children. General information about the safe and effective use of VIAGRA.
| Dosage Form | Strengths (mg) | Available Packaging | Typical Use Cases |
|---|---|---|---|
| Tablets | 25 | Blister packs of 4, 8 | Mild to moderate ED |
| Tablets | 50 | Blister packs of 4, 8 | Common dose, initial use |
| Tablets | 100 | Blister packs of 4, 8 | Severe ED issues |
Medicines are sometimes prescribed for purposes other than those listed in a Patient Information leaflet. Do not use VIAGRA for a condition for which it was not prescribed. Do not give VIAGRA to other people, even if they have the same symptoms that you have.
| Condition | Warning Level | Reason |
|---|---|---|
| Uncontrolled hypertension | High | Risk of severe hypotension |
| Cardiovascular disease | High | Increased cardiac risk |
| Use of nitrate medications | High | Dangerous drop in blood pressure |
| Retinitis pigmentosa | Moderate | Potential retinal complications |
This Patient Information leaflet summarizes the most important information about VIAGRA.
Before taking this medicine
You will not get an erection just by taking this medicine. VIAGRA helps a man with erectile dysfunction get and keep an erection only when he is sexually excited (stimulated). VIAGRA is not for use in women or children. It is not known if VIAGRA is safe and effective in women or children under 18 years of age. take medicines called nitrates (such as nitroglycerin) use street drugs called "poppers" such as amyl nitrate or amyl nitrite, and butyl nitrate take any medicines called guanylate cyclase stimulators such as riociguat (Adempas) are allergic to sildenafil, as contained in VIAGRA and REVATIO, or any of the ingredients in VIAGRA.
What would happen if I took a larger dose of Viagra than my doctor prescribed — for example, 150 mg or 200 mg?
See the end of this leaflet for a complete list of ingredients in VIAGRA. What should I tell my healthcare provider before taking VIAGRA? Before you take VIAGRA, tell your healthcare provider if you: have or have had heart problems such as a heart attack, irregular heartbeat, angina, chest pain, narrowing of the aortic valve or heart failure have had heart surgery within the last 6 months have low blood pressure, or high blood pressure that is not controlled have had an erection that lasted for more than 4 hours have problems with your blood cells such as sickle cell anemia, multiple myeloma, or leukemia have retinitis pigmentosa, a rare genetic (runs in families) eye disease have ever had severe vision loss, including an eye problem called non-arteritic anterior ischemic optic neuropathy (NAION) have kidney problems or are having kidney dialysis Tell your healthcare provider about all the medicines you take1, including prescription and over-the-counter medicines, vitamins, and herbal supplements. VIAGRA may affect the way other medicines work, and other medicines may affect the way VIAGRA works causing side effects. Especially tell your healthcare provider if you take any of the following: medicines called nitrates (see "What is the most important information I should know about VIAGRA?") medicines called guanylate cyclase stimulators, such as riociguat (Adempas) medicines called alpha blockers such as Hytrin (terazosin HCl), Flomax (tamsulosin HCl), Cardura (doxazosin mesylate), Minipress (prazosin HCl), Uroxatral (alfuzosin HCl), Jalyn (dutasteride and tamsulosin HCl), or Rapaflo (silodosin). If you would like more information, talk with your healthcare provider. You can ask your healthcare provider or pharmacist for information about VIAGRA that is written for health professionals.
Thành phần hoá học
Take VIAGRA about 1 hour before sexual activity. You may take VIAGRA between 30 minutes to 4 hours before sexual activity if needed. VIAGRA can be taken with or without food. If you take VIAGRA after a high india viagra fat meal (such as a cheeseburger and french fries), VIAGRA may take a little longer to start working Do not take VIAGRA more than 1 time a day. If you accidentally take too much VIAGRA, call your doctor or go to the nearest hospital emergency room right away. For more information, go to or call 1-888-4VIAGRA Inactive ingredients: microcrystalline cellulose, anhydrous dibasic calcium phosphate, croscarmellose sodium, magnesium stearate, hypromellose, titanium dioxide, lactose, triacetin, and FD & C Blue #2 aluminum lake This Patient Information has been approved by the U.S. Food and Drug Administration. This product's label may have been updated. For current full prescribing information, please visit Viagra (sildenafil citrate), Revatio (sildenafil), Cardura (doxazosin mesylate), and Minipress (prazosin HCl) are registered trademarks of Pfizer Inc.
What If I Missed A Dose Of Pfizer Viagra 50mg Tablet 2s
Alpha-blockers are sometimes prescribed for prostate problems or high blood pressure. In some patients, the use of VIAGRA with alpha-blockers can lead to a drop in blood pressure or to fainting. medicines called HIV protease inhibitors, such as ritonavir (Norvir), indinavir sulfate (Crixivan), saquinavir (Fortovase or Invirase) or atazanavir sulfate (Reyataz) some types of oral antifungal medicines, such as ketoconazole (Nizoral), and itraconazole (Sporanox) some types of antibiotics, such as clarithromycin (Biaxin), telithromycin (Ketek), or erythromycin other medicines that treat high blood pressure VIAGRA contains sildenafil, which is the same medicine found in another drug called REVATIO. REVATIO is used to treat a rare disease called pulmonary arterial hypertension (PAH). VIAGRA should not be used with REVATIO or with other PAH treatments containing sildenafil or any other PDE5 inhibitors (such as Adcirca [tadalafil]).
Common Adverse Effects
Ask your healthcare provider or pharmacist for a list of these medicines, if you are not sure. Keep a list of them to show to your healthcare provider and pharmacist when you get a new medicine. Take VIAGRA exactly as your healthcare provider tells you to take it. Your healthcare provider will tell you how much VIAGRA to take and when to take it. Your healthcare provider may change your dose if needed. The other brands listed are trademarks of their respective owners and are not trademarks of Pfizer Inc. The makers of these brands are not affiliated with and do not endorse Pfizer Inc or its products.
- Viagra is sometimes used recreationally, raising health concerns.
- The World Health Organization recognizes ED as a common health issue.
- Education about safe Viagra use has improved over the years.
- Pfizer continues research into new uses and formulations of sildenafil.
- Viagra has helped destigmatize male sexual health issues.
- The drug's cost can vary based on region and insurance coverage.
- Pfizer's earnings from Viagra significantly contributed to its revenues.
- Viagra's side effects can sometimes include dizziness and visual disturbances.
- The development of Viagra helped shift perceptions of sexual health medication.
↑ Boolell, M; Allen, MJ; Ballard, SA; Gepi-Attee, S; Muirhead, GJ; Naylor, AM; Osterloh, IH; Gingell, C (tháng 6 năm 1996). ↑ "The Viagra jackpot: A history of the little blue pill at 20". Viagra (drug) tại Encyclopædia Britannica (bằng tiếng Anh) Pfizer Pharmaceutical (Company website) - manufacturer of Viagra; prescribing information available in PDF format. FDA Web Site for Viagra Consumer Information FDA current Viagra label (a form of clinical information and report) MedlinePLUS drug Information - Side Effects of sildenafil Lưu trữ ngày 28 tháng 9 năm 2007 tại Wayback Machine