What Is Sildenafil (SIL)?

You're interested in broader digital health services.

Side Effects

Stop taking the medication and call your healthcare provider right away if you experience these symptoms. Sudden hearing decrease, hearing loss, ringing in their ears (tinnitus) or dizziness. If you experience these symptoms, stop taking the medication and contact a healthcare provider right away. 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 12 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 NAION Have kidney problems or currently undergoing dialysis treatment Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements. Sildenafil, Tadalafil, and Vardenafil may affect how other medicines work, and other medicines may affect how these medications work, causing side effects.

Warnings for other groups

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 Sildenafil, tadalafil, and vardenafil should not be used with REVATIO or with other PAH treatments containing sildenafil, tadalafil, vardenafil, or any other PDE5 inhibitors (such as Adcirca tadalafil) Sildenafil, tadalafil, and vardenafil do not protect against sexually transmitted diseases, including HIV. The most common side effects of sildenafil, tadalafil, and vardenafil include headache, flushing, runny nose, congestion, throat or nose irritation, back pain, muscle pain, upset stomach, and heartburn. Sildenafil, Tadalafil, and Vardenafil are FDA-approved prescription medications for erectile dysfunction (ED) and are also prescribed off-label for other conditions. Friday Plans is currently available in select US states but we are working to expand. Current states that we facilitate consultative health services in are AL, AZ, AR, CA, CO, CT, DE, FL, GA, HI, ID, IL, IN, IA, KS, KY, LA, MA, ME, MD, MI, MO, MT, NE, NV, NH, NJ, NM, NY, NC, OH, OK, PA, RI, SD, TN, TX, UT, VT, VA, WA, WV, WI, and WY.

More common

Alabama, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Massachusetts, Maine, Maryland, Michigan, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, and Wyoming . There are several factors to consider when choosing between BlueChew, Hims, and Roman; BlueChew is best for chewable, lower cost generics with a simple subscription, Hims for broader men’s health care with branded and daily tadalafil options, and Roman for a more structured telehealth experience with ongoing care. See below for key differences in medication formats, pricing, plan flexibility, and availability. Before starting, review safety cautions like nitrates or recent cardiac events, complete an honest intake, and arrange follow up since ED can signal cardiovascular or metabolic disease, and seek urgent care for chest pain or an erection over 4 hours; your detailed next steps, safety guidance, cost comparisons, and a symptom check tool are provided below. Discover likely causes of erectile dysfunctionFind out if ED needs care todaySee what’s behind your erectile problemsExplore OTC options for erectile concernsFind a doctor for sexual healthUnderstand safe home remedies for EDTake a symptom check for ED If you're dealing with erectile dysfunction (ED), you're not alone. ED is often treatable—but sometimes it's a signal.

But it doesn't replace a full medical evaluation.

• Sildenafil is part of a class of drugs called phosphodiesterase inhibitors.
• Chewing sildenafil tablets can potentially cause burns or irritation.
• Always follow your doctor’s instructions for sildenafil dosage.
• Sildenafil may cause a drop in blood pressure in some users.
• Use sildenafil only under medical supervision.
• Do not use sildenafil if you are taking certain alpha-blockers.
• Chewing sildenafil is not a recommended administration route.
• Keep track of sexual activity and medication effects.
• Regular check-ups are advised when using sildenafil long-term.

If you haven't had a recent physical exam, blood pressure check, cholesterol test, or blood sugar screening, now is a good time.

Types of PDE5 inhibitors

BlueChew MAX delivers results in as little as 15 minutes. Traditional ED meds take up to 60 minutes. Sublingual form kicks in quicker than pills BlueChew MAX delivers results that last long after the moment begins. MAX enhances circulation and endurance, helping you perform at your best — whenever the moment calls. With MAX, confidence isn't scheduled — it's ready when you are.

Incidence not known

Quick to activate and long-lasting, it removes the pressure of timing and planning. Do not take Sildenafil (sildenafil citrate), Tadalafil, or Vardenafil if you take medication containing nitrates or guanylate cyclase stimulators for pulmonary hypertension as this could cause an unsafe drop in blood pressure. If you are allergic to Sildenafil, Tadalafil, or Vardenafil or any ingredients contained in these medications, do not consume BLUECHEW. Discuss your health with your provider to ensure that you are healthy enough for sex. If you experience chest pain, dizziness, or nausea during sex, seek immediate medical help.

Regional issues

Sildenafil, Tadalafil, and Vardenafil can cause serious side effects. An erection lasting more than 4 hours. If you experience a prolonged erection, seek immediate medical attention as this can cause permanent damage if left untreated. Sudden vision loss in one or both eyes. This can be a sign of a serious eye problem. You may also want to start with a free Erectile Dysfunction symptom assessment tool to explore underlying causes and get personalized insights before committing to a treatment platform.

• Sildenafil's primary action is to inhibit PDE5 enzyme activity.
• Chewing sildenafil could lead to uneven drug distribution.
• Take sildenafil with a glass of water for best absorption.
• Avoid taking sildenafil with heavy or fatty foods.
• Keep a record of your response to adjust dosage if needed.
• Sildenafil's effectiveness depends on proper administration.
• Discuss potential health risks with your healthcare provider.
• Watch for any allergic reactions after taking sildenafil.
• Discontinuing sildenafil should be done under medical supervision.

Consider whether you want a subscription or flexible ordering.

Further information

Branded Viagra and Cialis (in some cases) Pricing may be higher than discount-focused competitors Best for:Men who want a more comprehensive telehealth experience with structured follow-up care. Here's a simplified look at how they compare: You must complete a medical intake form. A licensed healthcare provider reviews your information. Common side effects of ED medications include: Rare but serious side effects can include vision changes, hearing loss, or an erection lasting longer than 4 hours (priapism). ED medications are not safe for everyone.

Returns and refunds

You should not take sildenafil or tadalafil if you: Have had a recent stroke or heart attack This is why honesty during your online medical intake is critical. Mixing them with certain heart medications can cause dangerous drops in blood pressure. If you have chest pain, shortness of breath, or symptoms of heart disease, speak to a doctor immediately rather than starting ED medication online. BlueChew is often more budget-friendly for monthly users. Hims offers competitive generic pricing but charges more for branded medications.

Other forms of sildenafil can work under the tongue

Roman may be slightly more expensive but emphasizes structured medical oversight. Insurance typically does not cover these online ED services. You want ED treatment plus other men's health options. You're interested in daily low-dose treatment. You want a more structured telehealth platform. Follow up with a primary care doctor if you have underlying conditions.

Serious side effects of sildenafil

ED affects millions of men in the U.S., especially those over 40—but it can happen at any age. The good news is that effective treatments are available, and online platforms have made getting help easier and more private than ever. In this BlueChew vs Hims vs Roman comparison, we'll break down how these services work, what they offer, and how to decide which one may be right for you. We'll also discuss when it's important to speak to a doctor in person. Erectile dysfunction is the consistent difficulty getting or keeping an erection firm enough for sex.

Pulmonary hypertension

But if it happens regularly, it could signal: ED can sometimes be an early warning sign of heart disease. That's why it's important not to ignore it. If you're unsure whether what you're experiencing qualifies as ED, you might consider using a free, AI-powered Erectile Dysfunction symptom checker to help identify possible causes and better understand your symptoms before choosing a treatment path. All three services provide prescription ED medications through online consultations. But they differ in medication format, pricing structure, and overall approach.

Viagra overdose

What it offers:BlueChew provides chewable versions of FDA-approved active ingredients: Good for men who dislike swallowing pills Typically lower cost than brand-name drugs Subscription-based only (no one-time orders) Limited to ED medications (not broader men's health) Not available in every U.S. state Best for:Men who want chewable ED medication and prefer a simple, no-frills subscription model. What it offers:Hims provides ED medications plus a broader range of men's health services (hair sildenafil citrate 150 mg red pill loss, mental health, skincare). Branded Viagra and Cialis (in some cases) One-time or subscription options (depending on medication) Pricing can vary depending on medication choice May cost more than competitors for certain options Best for:Men who want ED treatment plus access to other health services in one place. What it offers:Roman provides ED medications and a wider digital health platform under the Ro brand. If you experience chest pain, fainting, severe shortness of breath, or an erection lasting more than four hours, seek immediate medical care.

• Sildenafil may cause flushing or nasal congestion.
• Chewing sildenafil may lead to inconsistent dosing.
• Discuss any allergies with your healthcare provider.
• Sildenafil may be less effective in older adults.
• Use caution with sildenafil if you have retinal disorders.
• Do not take sildenafil if you are taking recreational drugs.
• Proper storage of sildenafil keeps it effective longer.
• Be aware of the risk of sudden vision or hearing loss.
• Always use sildenafil responsibly as prescribed.

And if your ED is persistent, worsening, or accompanied by other symptoms like fatigue, weight changes, or reduced libido, speak to a doctor. Some causes of ED can be life threatening if left untreated.

• Sildenafil is often effective within 30-60 minutes after intake.
• Chewing sildenafil may alter its intended pharmacokinetics.
• Always follow your healthcare provider’s instructions carefully.
• Maintain open communication with your doctor regarding results.
• Sildenafil isn’t suitable for everyone; medical screening is necessary.
• Use sildenafil responsibly to avoid dependency.
• Be aware of possible side effects before using the medication.
• Proper hydration and diet can optimize sildenafil’s effects.
• Never share prescription medication with others.

In this BlueChew vs Hims vs Roman comparison, there is no single "best" choice—only the best choice for you.

All three offer convenient, discreet access to effective medications backed by well-established medical science.