Sildenafil
Prescription Reviewed & Sent Fast
Sildenafil is a widely used prescription medication for erectile dysfunction (ED). Often known as generic Viagra, sildenafil helps improve blood flow to the penis, making it easier to maintain an erection during sexual activity. With 24hrdoc, eligible patients can request a sildenafil prescription online after completing a short medical questionnaire reviewed by a virtual provider.
- Reviewed by a licensed U.S. provider
- Prescription sent to your local pharmacy
- No insurance required
at just
$39.99
5-minute assessment • No office visit required
About this Medication
Sildenafil belongs to a class of erectile dysfunction medications known as PDE5 inhibitors. They work by helping blood vessels open more fully, allowing better blood flow to the penis when a man is sexually aroused.
Sildenafil tablets are commonly prescribed for men who have trouble getting or keeping an erection firm enough for sexual intercourse. ED symptoms may happen occasionally, or they may become an ongoing concern that affects confidence and sex life.
Sildenafil may be prescribed for men experiencing ED related to:
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Occasional difficulty getting an erection
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Ongoing trouble maintaining an erection
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Performance anxiety
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Age-related changes
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Lifestyle-related ED
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Circulation-related health problems
24hrdoc makes it easier to access medical treatment for ED from the privacy of home. After you answer questions about your symptoms, medical history, medications, and risk factors, a licensed healthcare provider will review your information to determine whether sildenafil is appropriate for your treatment plan.
24hrdoc's online ED service is designed primarily for adults ages 40–70. Patients must be 18 or older.
What is sildenafil?
Sildenafil is a prescription medication primarily used to treat erectile dysfunction (ED) in men. It works by increasing blood flow to the penis during sexual stimulation, helping to achieve and maintain an erection.
Originally developed to treat high blood pressure and angina, Sildenafil belongs to a class of drugs known as phosphodiesterase type 5 (PDE5) inhibitors. It is also available under the brand name Viagra.
What is sildenafil used for?
Sildenafil is primarily used to treat:
- Erectile dysfunction (ED)
- Pulmonary arterial hypertension (PAH) (under brand name Revatio)
- Off-label: Raynaud’s phenomenon, altitude sickness
Side effect of sildenafil
Common side effects of Sildenafil:
- Headache
- Flushing (warmth or redness in face)
- Upset stomach
- Nasal congestion
- Dizziness
- Vision changes (blurred vision, sensitivity to light)
Dosage forms and strengths
Tablets: 25 mg, 50 mg, and 100 mg.
The typical starting dose for ED is 50 mg, taken as needed about 30–60 minutes before sexual activity.
How to take it?
Sildenafil should be taken orally, usually 30 to 60 minutes before sexual activity. Do not take more than once per day.
- Swallow with water
- Can be taken with or without food (avoid high-fat meals)
- Follow your doctor’s dosage instructions
Contraindications
Sildenafil should not be used with certain medications or conditions, especially nitrates, due to the risk of a dangerous drop in blood pressure. Avoid if you have:
- Recent heart attack or stroke
- Uncontrolled low or high blood pressure
- Severe liver or kidney disease
- Retinitis pigmentosa
- Are taking nitrates or nitric oxide donors
Quick Facts
Medication Type: PDE5 inhibitor
Treats: Erectile dysfunction (ED)
Common Brand Name: Viagra
Generic Name: Sildenafil
Medication Form: Sildenafil tablets
Prescription Required: yes
How It Is Taken: By mouth before sexual activity
When It Starts Working: Often within 30–60 minutes
How Long It Lasts: About 4 hours for many patients
Online Availability: Eligible patients may get sildenafil prescribed online after medical review
Pharmacy Access: Approved prescriptions can be sent to a local pharmacy
Insurance Coverage: Insurance does not cover the 24hrdoc consultation fee, but insurance may be used for pharmacy medications when accepted by the pharmacy
Is Sildenafil Right For You?
You may be a candidate if you:
- Experience difficulty achieving or maintaining an erection
- Are seeking treatment for erectile dysfunction reviewed by a licensed provider
- Are not currently taking nitrate medications for chest pain
- Do not have medical conditions that would make sexual activity unsafe
Not sure? A provider will review your information before prescribing to ensure it’s safe and appropriate.
Simple 3-Step Process
How it Works
If approved, your prescription is sent to your pharmacy for pickup often within hours.
1. Choose Sildenafil
Answer a short medical questionnaire so we can understand your goals, health history, and whether medicine is appropriate for you.
- Takes 3–5 minutes
- No insurance required
- Transparent pricing before checkout
2. Licensed Provider Review
A licensed medical provider reviews your information and determines if the medication is appropriate for you.
- Real medical review
- Safe, personalized decision
- No commitment
3. Prescription Sent to Your Pharmacy
If approved, your prescription is electronically sent to your preferred pharmacy for pickup.
- Fast electronic delivery
- Secure & confidential
- Ongoing support if needed
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*24hrdoc is not a pharmacy. We do not carry or
ship medicines. Online Doctor Prescriptions are
sent electronically to your pharmacy after an
online medical consultation.
