10 OVERDOSAGE
If you have these symptoms, stop taking sildenafil and contact a doctor right away.
- Sildenafil citrate is available by prescription; do not buy unregulated versions.
- Dose adjustments are essential for individuals with liver or kidney impairment.
- Always adhere to prescribed guidelines when using sildenafil citrate.
In addition, heart attack, stroke, irregular heartbeats, and death have happened sildenafil citrate tablets 50mg rarely in people taking sildenafil.
- At 200mg, visual side effects like blue-green tint are more pronounced.
- This occurs because PDE6 in retinal rods is also inhibited at high doses.
- Transient light sensitivity and blurred vision may last several hours.
- Risk increases with dose; 200mg has higher incidence than 50mg or 100mg.
- In most cases, visual changes are reversible upon drug elimination.
- Patients with retinitis pigmentosa should avoid sildenafil altogether.
- NAION (non-arteritic ischemic optic neuropathy) risk is dose-independent.
- Annual eye exams may be advised for patients using high-dose sildenafil.
- Report any sudden vision loss immediately; it may be permanent.
Most, but not all, of these people had heart problems before taking this medicine. It is not known if sildenafil caused these problems. Tell all your healthcare providers that you take sildenafil.
| Parameter | Value | Notes |
|---|---|---|
| Absorption Rate | Peak plasma concentration in 1 hour | Bioavailability around 40-50% |
| Distribution Volume | Approximately 105 L points to wide tissue distribution | |
| Metabolism | Primarily via CYP3A4 and CYP2C9 enzymes | Liver processing |
| Half-life | Roughly 4 hours | Eliminates 50% of drug from blood |
| Excretion | Mainly in feces (~80%), urine (~13%) |
If you need emergency medical care for a heart problem, it will be important for your healthcare provider to know when you last took sildenafil.
- Sildenafil citrate 200mg should only be used under medical supervision.
- Higher doses like 200mg may lead to priapism, a prolonged erection needing emergency care.
- Store sildenafil citrate in a cool, dry place away from direct sunlight.
Stop sexual activity and get medical help right away if you get symptoms such as chest pain, dizziness, or nausea during sex.
4.3 Concomitant Guanylate Cyclase (GC) Stimulators
Throw away any unused mixed Revatio® oral liquid after 60 days. It is important that you tell all of your doctors that you take sildenafil. If you need emergency medical care for a heart problem, it is important that your doctor knows when you last took sildenafil. Do not use this medicine if you are also using a nitrate medicine, often used to treat angina or high blood pressure. Some illegal ("street") drugs called "poppers" (such as amyl nitrate, butyl nitrate, or nitrite).
Related treatment guides
Do not use this medicine if you also use riociguat (Adempas®). If you will be taking this medicine for pulmonary arterial hypertension, your doctor will want to check your progress at regular visits. This will allow your doctor to see if the medicine is working properly and to decide if you should continue to take it. If you take sildenafil for pulmonary arterial hypertension, do not take Viagra®, Vibrique™ or other PDE5 inhibitors, including tadalafil (Cialis®) or vardenafil (Levitra®). If you take too much sildenafil or take it together with these medicines, the chance for side effects will be higher.
Less common
It is important to tell your doctor about any heart problems you have now or may have had in the past. This medicine can cause serious side effects in patients with heart problems. If you experience a prolonged or painful erection for 4 hours or more, contact your doctor immediately. This condition may require prompt medical treatment to prevent serious and permanent damage to your penis. If you experience a sudden loss of vision in one or both eyes, contact your doctor immediately. Sexual activity can put an extra strain on your heart, especially if your heart is already weak from a heart attack or heart disease.
| Product | Dosage | Quantity + Bonus | Price | |
|---|---|---|---|---|
| Viagra Generic | 200mg | 90 + 6 Pills | 170.79€ 162.66€ | |
| Viagra Generic | 150mg | 270 + 10 Pills | 326.61€ 311.06€ | |
| Kamagra Soft Tabs | 100mg | 120 + 6 Pills | 311.78€ 296.93€ | |
| Viagra Generic | 100mg | 120 + 6 Pills | 149.50€ 142.38€ | |
| Viagra Generic | 25mg | 120 + 6 Pills | 125.56€ 119.58€ | |
| Viagra Generic | 50mg | 360 + 10 Pills | 225.33€ 214.60€ | |
| Viagra Generic | 200mg | 180 + 10 Pills | 277.56€ 264.34€ | |
| Kamagra | 100mg | 12 Pills | 55.64€ 52.99€ | |
| Kamagra Oral Jelly | 100mg | 90 + 8 Sachets | 303.56€ 289.10€ | |
| Kamagra Soft Tabs | 100mg | 84 + 4 Pills | 233.05€ 221.95€ |
Sildenafil does not protect you or your partner from getting sexually transmitted diseases, including Human Immunodeficiency Virus (HIV).
8.4 Pediatric Use
You may report side effects to the FDA at 1-800-FDA-1088. Pronunciation: sil-DEN-a-fil Generic name: sildenafil Brand names: Revatio, Viagra, Vybrique Dosage form: tablets (20 mg; 25 mg, 50 mg, 100 mg), injection (10 mg/12.5 mL), oral suspension (10 mg/mL), oral film (25 mg, 50 mg, 75 mg, 100 mg) Drug classes: Agents for pulmonary hypertension, Impotence medications Sildenafil is used to treat erectile dysfunction (ED) in adult men or pulmonary arterial hypertension (PAH) in adults and children, depending on the brand or formulation. Sildenafil tablets (25 mg, 50 mg, 100 mg; Viagra, generic) and sildenafil oral film (25 mg, 50 mg, 75 mg, 100 mg; Vybrique) are used for ED. Sildenafil tablets (20 mg; Revatio, generic), sildenafil oral suspension (Revatio, generic), and sildenafil injection (Revatio, generic) are used for PAH. Sildenafil is a phosphodiesterase type 5 (PDE5) inhibitor, which breaks down cyclic GMP and enhances nitric oxide (NO) -mediated smooth muscle relaxation.
Viagra Tablets
In erectile dysfunction (ED), this increases blood flow to penile tissue, facilitating an erection. In pulmonary arterial hypertension (PAH), it dilates pulmonary vessels by the same mechanism, reducing pulmonary blood pressure and improving exercise capacity. Sildenafil first gained FDA approval on March 27, 1998. Do not take sildenafil if you are also using a nitrate drug for chest pain or heart problems, including nitroglycerin, isosorbide dinitrate, isosorbide mononitrate, and some recreational drugs such as "poppers". Taking sildenafil with a nitrate medicine can cause a sudden and serious decrease in blood pressure.
Common Side Effects
Some medicines can cause unwanted or dangerous effects when used with sildenafil. Tell your doctor about all your current medicines, especially riociguat (Adempas). The most common side effects of sildenafil tablets for ED are: Abnormal vision, such as changes in color vision (such as having a blue color tinge) andblurred vision The most common side effects of sildenafil oral film for ED are: Abnormal vision, such as changes in color and blurred vision The most common side effects of sildenafil tablets/ oral suspension, and injection for PAH are: Sildenafil can cause the following serious side effects. 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. Sildenafil may cause low blood pressure, which may cause you to feel faint or dizzy.
8.1 Pregnancy
Sildenafil can decrease blood flow to the optic nerve of the eye, causing sudden vision loss. This has occurred in a small number of people taking sildenafil, most of whom also had heart disease, diabetes, high blood pressure, high cholesterol, or certain pre-existing eye problems, and in those who smoked or were over 50 years old. 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). Stop taking sildenafil and call your healthcare provider right away if you havesudden vision loss in one or both eyes. Some people may also have ringing in their ears (tinnitus) or dizziness. Lie down if you feel faint or dizzy. Tell your doctor if you get more short of breath after you start sildenafil. More shortness of breath than usual may be due to your underlying medical condition.
Product Reviews
Check with your doctor right away if you have a sudden decrease in hearing or loss of hearing, which may be accompanied by dizziness and ringing in the ears. If you already use medicine for high blood pressure (hypertension), sildenafil could make your blood pressure go too low. Call your doctor right away if you have blurred vision, confusion, dizziness, faintness, or lightheadedness when getting up from a lying or sitting position suddenly, sweating, or unusual tiredness or weakness. This medicine does not protect you against sexually transmitted diseases (including HIV or AIDS). Use protective measures and ask your doctor if you have any questions about this.
Are you currently using Sildenafil (Viagra, Revatio)?
Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements. Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. Check with your doctor immediately if any of the following side effects occur: burning feeling in the chest or stomach burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings decrease in amount of urine or the frequency of urination dizziness or lightheadedness, especially when getting up suddenly from a lying or sitting position dryness, redness, scaling, or peeling of the skin increase in the size of the pupil redness, burning, or swelling of the eyes redness, itching, or tearing of the eyes seeing shades of colors differently than before swelling of the face, hands, feet, or lower legs unusual feeling of burning or stinging of the skin Some side effects may occur that usually do not need medical attention.
4. Export Certifications
These side effects may go away during treatment as your body adjusts to the medicine. Also, your health sildenafil 10mg care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them: pain or tenderness around the eyes and cheekbones diarrhea or stomach cramps (severe or continuing) numbness or tingling of the hands, legs, or feet redness, soreness, swelling, or bleeding of the gums sensation of motion, usually whirling, either of one's self or of one's surroundings sexual problems in men (continuing), including failure to experience a sexual orgasm sores in the mouth and on the lips Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional. Call your doctor for medical advice about side effects. Do not take Viagra while also taking Revatio.
| Country | Approved Use | Prescription Required | Maximum Allowed Dose | Notes |
|---|---|---|---|---|
| United States | Erectile Dysfunction | Yes | 100mg tablet max | 200mg often not approved OTC |
| European Union | Erectile Dysfunction | Yes | 100mg per dose | 200mg used only under medical supervision |
| Australia | Pulmonary Hypertension | Yes | Up to 200mg daily | Under special prescription |
| India | Both Uses | Yes | 200mg dose | Commonly available in pharmacies |
Tell your healthcare provider if you have any side effect that bothers you or does not go away. These are not all of the possible side effects of sildenafil.
- Sildenafil citrate may interact with certain antifungals and antibiotics, increasing side effects.
- Always review current medications with your healthcare provider before using sildenafil citrate.
- Report any adverse reactions immediately to prevent worsening health conditions.
Have allergies to sildenafil, Viagra, Revatio, Vybrique, or any of the ingredients in the sildenafil formulation you are taking Take other medicines for pulmonary arterial hypertension, such as riociguat (Adempas) Take other medicines for pulmonary arterial hypertension, such as riociguat (Adempas) Take other medicines that lower your blood pressure, such as nitroglycerin, isosorbide dinitrate, isosorbide mononitrate, and some recreational drugs that also contain nitrates, such as "poppers". To make sure sildenafil is safe for you, tell your healthcare provider about all your medical conditions, including 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 Had heart surgery within the last 6 months Low blood pressure, or high blood pressure that is not controlled A physical deformity of the penis (such as Peyronie's disease) Been told you should not have sexual intercourse for health reasons and you are a male Had an erection that lasted for more than 4 hours Problems with your blood cells, such as sickle cell anemia, multiple myeloma, or leukemia Retinitis pigmentosa, a rare genetic (runs in families) eye disease Ever had severe vision loss, including an eye problem called non-arteritic anterior ischemic optic neuropathy (NAION) Kidney problems or are having kidney dialysis Are pregnant or intending to become pregnant (for patients with PAH) Are breastfeeding or intending to breastfeed (for patients with PAH).
