Sildenafil dosing question
Seek advice from your physician or other qualified healthcare providers with questions you may have regarding your symptoms and medical condition for a complete medical diagnosis. Do not delay or disregard seeking professional medical advice because of something you have read on this website.
- Sildenafil may cause dizziness; avoid operating machinery after taking.
- Monitor for any adverse reactions and report to your doctor.
- Use with caution if you have pre-existing conditions like low blood pressure.
Read our Editorial Process to know how we create content for health articles and queries. Applies to the following strengths: 10 mg/mL; 10 mg/12.5 mL; 20 mg; 25 mg; 50 mg; 100 mg; 75 mg TABLETS (Viagra) Initial dose: 50 mg orally once a day, as needed, about 1 hour prior to sexual activity Maintenance dose: May increase to 100 mg or decrease to 25 mg once a day, based on efficacy and tolerability. Maximum dose: 100 mg orally once a day Comments: This drug may be taken anywhere from 30 minutes to 4 hours before sexual activity. TABLETS (Revatio)/ORAL SUSPENSION (Revatio, Liqrev): Initial dose: 20 mg orally 3 times a day Maintenance dose: May titrate up to 80 mg orally 3 times a day, if required, based on symptoms and tolerability.
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Initiate treatment with 25 mg orally once a day, as needed, about 1 hour prior to sexual activity Patients should be stable on alpha blocker therapy prior initiating treatment with this drug. Administration with CYP450 3A4 Inhibitors (e.g., ketoconazole, itraconazole, saquinavir) or Erythromycin: Consider a starting dose of 25 orally once a day, as needed, about 1 hour prior to sexual activity. Recommended dose: 25 mg orally, as needed, about 1 hour prior to sexual activity Maximum dose: 25 mg orally within a 48 hour period Known hypersensitivity to either the active component or to any of the ingredients; hypersensitivity reactions have been reported, including rash and urticaria In patients who are using a guanylate cyclase (GC) stimulators, such as riociguat; phosphodiesterase type 5 inhibitors (PDE5), including this drug, may potentiate the hypotensive effects of GC stimulators. In patients who are using nitric oxide donors such as organic nitrates or organic nitrites in any form either regularly and/or intermittently; this drug has been shown to potentiate the hypotensive effects of nitrates based on its mechanism of action After patients have taken this drug for ED, it is unknown when nitrates, if necessary, can be safely administered. Although plasma levels of this drug at 24 hours post-dose are much lower than at peak concentration, it is unknown whether nitrates can be safely co-administered at this time point.
Allergy warning
Concomitant use of organic nitrates in any form, either regularly or intermittently, because of the greater risk of hypotension Concomitant use of riociguat, a guanylate cyclase stimulator; PDE5 inhibitors, including this drug, may potentiate the hypotensive effects of riociguat. Known hypersensitivity to either the active component or to any of the ingredients of the tablet, injection, or oral suspension; hypersensitivity reactions have been reported, sildenafil oral jelly 100 mg including anaphylactic reaction, anaphylactic shock, and anaphylactoid reaction Safety and efficacy have not been established in patients with ED younger than 18 years. Safety and efficacy have not been established in patients with PAH younger than 1 year. Due to high plasma protein binding and poor elimination in urine, removal via hemodialysis is unlikely. Tablets: Administer orally with or without food.
Does sildenafil interact with foods or drinks?
Reconstitute product before oral administration, and shake well before use. An oral syringe is recommended for dose sildenafil 60mg measurement (and delivery). Use within 60 days after reconstitution; discard any remainder after expiration. The liquid suspension is premixed and may contain flavoring. Shake well before oral administration and use a calibrated measuring device for accurate dosing. Maximum dose: 80 mg orally 3 times a day IV: 10 mg IV bolus 3 times a day Comments: No adjustment for body weight is required for IV dosing.
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The 10 mg IV bolus dose is predicted to provide an equivalent pharmacological effect to that of 20 mg orally. Doses up to a maximum of 80 mg orally 3 times a day are supported by delayed clinical worsening with long-term use in clinical studies despite a lack of observed dose-response improvement in exercise ability in short-term clinical studies.
- Do not exceed the recommended dose to avoid side effects.
- Consult a doctor if you have cardiovascular issues before use.
- Avoid taking with high-fat meals, as they may delay effectiveness.
In adults 65 years or older, use caution with dose selection due to a higher incidence of compromised renal, cardiac, and/or hepatic function, and of concomitant disease or drug therapy. Use: For the treatment of PAH (WHO Group I) to improve exercise ability and delay clinical worsening TABLETS (Viagra) Initial dose: 25 mg orally once a day, as needed, about 1 hour prior to sexual activity Maintenance dose: May titrate up to 100 mg orally once a day, based on effectiveness and toleration. Maximum dose: 100 mg orally once a day Comments: This drug may be administered anywhere from 30 minutes to 4 hours before sexual activity. A reduced starting dose is recommended in older adults due to higher systemic exposure as compared to younger adults. TABLETS (Revatio)/ORAL SUSPENSION (Revatio) 1 to less than 18 years: Weight 20 kg or less: 10 mg orally 3 times a day Weight greater than 20 kg to 45 kg: 20 mg orally 3 times a day Weight greater than 45 kg: 20 mg orally 3 times a day; dose may be titrated up to a maximum of 40 mg orally 3 times a day, if required, based on symptoms and tolerability Use: For the treatment of pulmonary arterial hypertension (WHO Group I) to improve exercise ability and, in pediatric patients too young to perform standard exercise testing, pulmonary hemodynamics thought to underlie improvements in exercise ERECTILE DYSFUNCTION: Mild to Moderate Renal Dysfunction (CrCl 30 to 80 mL/min): No adjustment recommended Severe Renal Dysfunction (CrCl less than 30 mL/min): Consider a starting dose of 25 mg orally once a day, about 1 hour prior to sexual activity Mild, Moderate, or Severe Renal Dysfunction (CrCl 80 to less than 30 mL/min): No adjustment recommended ERECTILE DYSFUNCTION: Mild, Moderate, or Severe Liver Dysfunction (Child-Pugh A, B, or C): Consider a starting dose of 25 mg orally once a day, about 1 hour prior to sexual activity. Mild or Moderate Liver Dysfunction (Child-Pugh A or B): No adjustment recommended Severe Liver Dysfunction (Child-Pugh C): Data not available in this population. Initiate treatment with 25 mg orally once a day, as needed, about 1 hour prior to sexual activity Patients should be stable on alpha blocker therapy prior initiating treatment with this drug. Administration with CYP450 3A4 Inhibitors (e.g., ketoconazole, itraconazole, saquinavir) or Erythromycin: Consider a starting dose of 25 orally once a day, as needed, about 1 hour prior to sexual activity. Recommended dose: 25 mg orally, as needed, about 1 hour prior to sexual activity Maximum dose: 25 mg orally within a 48 hour period Known hypersensitivity to either the active component or to any of the ingredients; hypersensitivity reactions have been reported, including rash and urticaria In patients who are using a guanylate cyclase (GC) stimulators, such as riociguat; phosphodiesterase type 5 inhibitors (PDE5), including this drug, may potentiate the hypotensive effects of GC stimulators. In patients who are using nitric oxide donors such as organic nitrates or organic nitrites in any form either regularly and/or intermittently; this drug has been shown to potentiate the hypotensive effects of nitrates based on its mechanism of action After patients have taken this drug for ED, it is unknown when nitrates, if necessary, can be safely administered. Although plasma levels of this drug at 24 hours post-dose are much lower than at peak concentration, it is unknown whether nitrates can be safely co-administered at this time point. Concomitant use of organic nitrates in any form, either regularly or intermittently, because of the greater risk of hypotension Concomitant use of riociguat, a guanylate cyclase stimulator; PDE5 inhibitors, including this drug, may potentiate the hypotensive effects of riociguat. Known hypersensitivity to either the active component or to any of the ingredients of the tablet, injection, or oral suspension; hypersensitivity reactions have been reported, sildenafil oral jelly 100 mg including anaphylactic reaction, anaphylactic shock, and anaphylactoid reaction Safety and efficacy have not been established in patients with ED younger than 18 years. Safety and efficacy have not been established in patients with PAH younger than 1 year. Due to high plasma protein binding and poor elimination in urine, removal via hemodialysis is unlikely.
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Tablets: Administer orally with or without food. Reconstitute product before oral administration, and shake well before use. An oral syringe is recommended for dose sildenafil 60mg measurement (and delivery). Use within 60 days after reconstitution; discard any remainder after expiration. The liquid suspension is premixed and may contain flavoring. Shake well before oral administration and use a calibrated measuring device for accurate dosing.
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Seek advice from your physician or other qualified healthcare providers with questions you may have regarding your symptoms and medical condition for a complete medical diagnosis. Do not delay or disregard seeking professional medical advice because of something you have read on this website. Read our Editorial Process to know how we create content for health articles and queries. Applies to the following strengths: 10 mg/mL; 10 mg/12.5 mL; 20 mg; 25 mg; 50 mg; 100 mg; 75 mg TABLETS (Viagra) Initial dose: 50 mg orally once a day, as needed, about 1 hour prior to sexual activity Maintenance dose: May increase to 100 mg or decrease to 25 mg once a day, based on efficacy and tolerability. Maximum dose: 100 mg orally once a day Comments: This drug may be taken anywhere from 30 minutes to 4 hours before sexual activity.
What’s the difference between sildenafil and Viagra?
TABLETS (Revatio)/ORAL SUSPENSION (Revatio, Liqrev): Initial dose: 20 mg orally 3 times a day Maintenance dose: May titrate up to 80 mg orally 3 times a day, if required, based on symptoms and tolerability. Maximum dose: 80 mg orally 3 times a day IV: 10 mg IV bolus 3 times a day Comments: No adjustment for body weight is required for IV dosing. The 10 mg IV bolus dose is predicted to provide an equivalent pharmacological effect to that of 20 mg orally. Doses up to a maximum of 80 mg orally 3 times a day are supported by delayed clinical worsening with long-term use in clinical studies despite a lack of observed dose-response improvement in exercise ability in short-term clinical studies. In adults 65 years or older, use caution with dose selection due to a higher incidence of compromised renal, cardiac, and/or hepatic function, and of concomitant disease or drug therapy.
Some side effects can be serious. If you experience any of the following symptoms, call your doctor immediately:
Use: For the treatment of PAH (WHO Group I) to improve exercise ability and delay clinical worsening TABLETS (Viagra) Initial dose: 25 mg orally once a day, as needed, about 1 hour prior to sexual activity Maintenance dose: May titrate up to 100 mg orally once a day, based on effectiveness and toleration. Maximum dose: 100 mg orally once a day Comments: This drug may be administered anywhere from 30 minutes to 4 hours before sexual activity. A reduced starting dose is recommended in older adults due to higher systemic exposure as compared to younger adults. TABLETS (Revatio)/ORAL SUSPENSION (Revatio) 1 to less than 18 years: Weight 20 kg or less: 10 mg orally 3 times a day Weight greater than 20 kg to 45 kg: 20 mg orally 3 times a day Weight greater than 45 kg: 20 mg orally 3 times a day; dose may be titrated up to a maximum of 40 mg orally 3 times a day, if required, based on symptoms and tolerability Use: For the treatment of pulmonary arterial hypertension (WHO Group I) to improve exercise ability and, in pediatric patients too young to perform standard exercise testing, pulmonary hemodynamics thought to underlie improvements in exercise ERECTILE DYSFUNCTION: Mild to Moderate Renal Dysfunction (CrCl 30 to 80 mL/min): No adjustment recommended Severe Renal Dysfunction (CrCl less than 30 mL/min): Consider a starting dose of 25 mg orally once a day, about 1 hour prior to sexual activity Mild, Moderate, or Severe Renal Dysfunction (CrCl 80 to less than 30 mL/min): No adjustment recommended ERECTILE DYSFUNCTION: Mild, Moderate, or Severe Liver Dysfunction (Child-Pugh A, B, or C): Consider a starting dose of 25 mg orally once a day, about 1 hour prior to sexual activity. Mild or Moderate Liver Dysfunction (Child-Pugh A or B): No adjustment recommended Severe Liver Dysfunction (Child-Pugh C): Data not available in this population. IV: Administer as an IV bolus injection; the supplied product is ready for use.
| Condition | Contraindicates Use | Explanation |
|---|---|---|
| Use with Nitrates | Do not use | Risk of severe hypotension |
| Severe Liver Disease | Caution | Altered drug metabolism |
| Recent Stroke or Heart Attack | Consult doctor | Cardiovascular risk |
| Allergic Reaction to Sildenafil | Avoid | Potential hypersensitivity |
| Use of Certain Antibiotics (e.g., Ritonavir) | Adjust dosage | Drug interactions possible |
Tablets/IV solution: Store at 20C to 25C (68F to 77F); excursions permitted to 15C to 30C (59F to 86F). Oral suspension (liquid): Store at 20C to 25C (68F to 77F); excursions permitted to 15C to 30C (59F to 86F). Oral suspension (powder): Store below 30C (86F) in the original package in order to protect from moisture. After reconstitution, store below 30C (86F) or in refrigerator at 2C to 8C (36F to 46F); do not freeze. Oral suspension (powder): Reconstitute with water (total 90 mL) in separate additions; shake vigorously after each addition. Do not mix with other medications or flavoring; insert adaptor into bottle neck.
- Store sildenafil tablets in a cool, dry place away from moisture.
- Keep out of reach of children and pets.
- Do not use expired medication; check expiry date on the pack.
Consult the manufacturer product information for detailed instructions. Cardiovascular: Cardiac status/risk factors (prior to initiation); blood pressure (periodically during treatment in patients with PAH on concomitant anti-hypertensive agents) Drug Interactions: For concomitant use of medications that may be contraindicated or for dose adjustment (at baseline and during treatment) Ocular: NAION risk factors (prior to initiation) Read the US FDA-approved patient labeling (Patient Information and/or Instructions for Use). Tell your healthcare provider about all of the medicines you (or your child take). Regular and/or intermittent use of nitric oxide donors (e.g., organic nitrates or nitrites) in any form Other PDE5 inhibitors or products containing sildenafil Seek immediate medical attention in the event of: Sudden loss of vision in one or both eyes Sudden decrease or loss of hearing; may be accompanied by tinnitus and dizziness An erection that persists longer than 4 hours.
- Common side effects include headaches, flushing, and nasal congestion.
- Serious side effects like vision changes or priapism require urgent medical attention.
- Inform your doctor about any medications to prevent interactions.
It is not recommended to take this drug more than once a day. This medication can cause your blood pressure to unsafely drop suddenly if it is taken with certain other medicines. Stop sexual activity and seek medical attention if you experience symptoms such as chest pain, dizziness, or nausea during sex, or if you have any side effect that bothers you or does not go away. Use protective measures to guard against sexually sildenafil premature ejaculation transmitted diseases, including the Human Immunodeficiency Virus (HIV). Customer: Refill my ordeeDoctor's Assistant: I understand you'd like to refill your order. Could you please tell me what item or service you are trying to reorder?Customer: slidenafil 50 mg tablets generic for viagraDoctor's Assistant: Thank you. I need some further details to help the Computer Technician. Can I have your full name?Customer: ***Doctor's Assistant: Thanks! What's your ZIP code?Customer: ***Doctor's Assistant: Perfect.
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Recreational use
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Regional issues
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Usual Pediatric Dose for Pulmonary Hypertension
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In case of emergency/overdose
IV: Administer as an IV bolus injection; the supplied product is ready for use. Tablets/IV solution: Store at 20C to 25C (68F to 77F); excursions permitted to 15C to 30C (59F to 86F). Oral suspension (liquid): Store at 20C to 25C (68F to 77F); excursions permitted to 15C to 30C (59F to 86F). Oral suspension (powder): Store below 30C (86F) in the original package in order to protect from moisture. After reconstitution, store below 30C (86F) or in refrigerator at 2C to 8C (36F to 46F); do not freeze.
Usual Adult Dose for:
Oral suspension (powder): Reconstitute with water (total 90 mL) in separate additions; shake vigorously after each addition. Do not mix with other medications or flavoring; insert adaptor into bottle neck. Consult the manufacturer product information for detailed instructions. Cardiovascular: Cardiac status/risk factors (prior to initiation); blood pressure (periodically during treatment in patients with PAH on concomitant anti-hypertensive agents) Drug Interactions: For concomitant use of medications that may be contraindicated or for dose adjustment (at baseline and during treatment) Ocular: NAION risk factors (prior to initiation) Read the US FDA-approved patient labeling (Patient Information and/or Instructions for Use). Tell your healthcare provider about all of the medicines you (or your child take).
Who is Sildenafil 50mg suitable for?
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| Medication Class | Interaction Effect | Notes |
|---|---|---|
| Nitrates | Severe hypotension | Absolute contraindication |
| Alpha-blockers | Enhanced blood pressure lowering | Use with caution |
| CYP3A4 Inhibitors (e.g., Ketoconazole) | Increased sildenafil levels | Dose adjustment needed |
| Protease Inhibitors | Increased risk of side effects | Monitor patient closely |
| Other PDE5 inhibitors | Additive effects | Not recommended to combine |
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