Discuss with your doctor what’s an appropriate dose for you. For daily use, Goldstein said, the generic form, sildenafil, comes in 20-mg tablets. “We prescribe one 20-mg tablet a night, a classic dose,” he said. “Should they wish to have sex, they bump up the dose to four more tablets to get to the 100-mg maximum dose.
| Brand/Source | Price per Tablet | Package Size | Cost per Pack | Notes |
|---|---|---|---|---|
| Brand A | $3.00 | 30 tablets | $90.00 | Trademarked, pharmacy purchase |
| Generic B | $0.50 | 60 tablets | $30.00 | FDA-approved generic |
| Online Supplier C | $0.20 | 90 tablets | $18.00 | Bulk purchase, check authenticity |
| Local Pharmacy D | $1.00 | 20 tablets | $20.00 | Over-the-counter available |
When used to get an erection, Viagra generally takes about half an hour to an hour to work.
Exactly how soon it works varies individually.
But in all cases, you’ll need to be sexually aroused to get an erection. Prescriptions for daily use of Viagra are now relatively common, Goldstein said, especially since the FDA approval of daily Cialis.
They’ll consider your overall health and any other medical conditions you are being treated for. Viagra may not be safe for you if you have high blood pressure, kidney problems, or a heart condition, for example. It also may interact negatively with some other medications. Viagra should only be taken once a day. Goldstein, director of San Diego Sexual Medicine at Alvarado Hospital and clinical professor of surgery at the University of California San Diego, explained to Healthline why blood flow to the penis is important.
Arterial blood goes through other organs all the time, but the penis doesn’t have that. During the day, there’s very little blood flow in the penis. Only during sildenafil film tablet erections is there blood flow. All the other organs are getting the 100 mm of oxygen all day and night, but the penis doesn’t.” “The penis only gets arterial blood flow during erections and during sleep. A routine night situation would involve 3 or maybe 4 or 5 hours of erection time, depending on how many hours the person slept.
So from the perspective of the penis, sleep is the real time when oxygenation occurs.” For people with ED, a daily dose of Viagra can improve oxygenation for the penis by improving the quality of nighttime erections. Goldstein noted that having good nighttime erections can help “prevent the scarring of the penis” that normally occurs with age. Ultrasound gives us the ability to assess the degree of scarring in an individual, Goldstein said. “Taking a PDE5 inhibitor every night can magnify the night erections and increase the chance of oxygenation, which increases the chance of getting rid of that scar tissue.” Viagra and Cialis (tadalafil) are both phosphodiesterase type 5 (PDE5) inhibitors. This class of drugs works to relax the smooth muscle in the blood vessels of your penis, which increases blood flow and helps you have and keep an erection. Side effects from Viagra are usually mild and may go away in time. Goldstein noted that there were very few side effects with a 20-mg daily dose. Viagra was the first ED medication, but now there are several drugs to use for ED. So if Viagra doesn’t work well for you, discuss other options with your doctor.
Each of these drugs is slightly different in composition from Viagra, and you may react differently to them. Tadalafil, for example, starts at a smaller dose and is active in your system for a longer time. Taking a daily dose of Viagra can help stop the intensity of the progression of ED. It also has other benefits, including improving your ability to urinate and improving your quality of life in general. Discuss dosage and frequency with your doctor to determine what works best for you.
| Product | Dosage | Quantity + Bonus | Price | |
|---|---|---|---|---|
| Viagra Generic | 50mg | 10 Pills | 26.87€ 25.59€ | |
| Kamagra Soft Tabs | 100mg | 60 + 4 Pills | 180.59€ 171.99€ | |
| Viagra Generic | 50mg | 120 + 6 Pills | 129.64€ 123.47€ | |
| Viagra Generic | 100mg | 270 + 10 Pills | 270.47€ 257.59€ | |
| Viagra Generic | 150mg | 30 + 2 Pills | 72.32€ 68.88€ | |
| Viagra Generic | 50mg | 180 + 8 Pills | 158.82€ 151.26€ | |
| Kamagra Polo | 100mg | 12 Pills | 60.21€ 57.34€ | |
| Viagra Generic | 200mg | 60 + 4 Pills | 125.19€ 119.23€ | |
| Viagra Generic | 150mg | 180 + 10 Pills | 236.46€ 225.20€ | |
| Kamagra Oral Jelly | 100mg | 63 + 7 Sachets | 224.18€ 213.50€ | |
| Kamagra Oral Jelly | 100mg | 90 + 8 Sachets | 303.56€ 289.10€ | |
| Viagra Generic | 150mg | 360 + 10 Pills | 423.48€ 403.31€ | |
| Viagra Generic | 100mg | 360 + 10 Pills | 330.21€ 314.49€ |
Marjorie Hecht is a longtime magazine editor and writer, now working as a freelancer on Cape Cod. Her specialties are science, technology, and medicine, but her eclectic career includes being a reporter at the United Nations and covering politics in Washington, D.C. She has an MSW from Columbia University, a BA from Smith College, and she did postgraduate work in race and demography at the London School of Economics. Most men researching sildenafil vs tadalafil vs vardenafil want a simple answer: which one is best?
Formulas and/or material listed are not to be interpreted as a promise, guarantee or claim of therapeutic efficacy or safety. The information contained herein is not intended to replace or substitute for conventional medical care, or encourage its abandonment. Every patient is unique, and formulas should be adjusted to meet their individual needs.No compounded medications are reviewed by the FDA for safety or efficacy. No compounded medications are reviewed by the FDA for safety or efficacy. Age > 65 years, hepatic impairment: 25 mg Severe renal impairment (CrCl < 30 ml/min): 25 mg Moderate hepatic impairment: initial 5 mg, max 10 mg Mild, moderate, severe renal impairment: No adjustment Mild or moderate hepatic impairment: max 10 mg once daily Moderate renal impairment: initial 5 mg once daily, max 10 mg every 48 hours Severe renal impairment (CrCl < 30 ml/min) on hemodialysis: max 5 mg Taking Viagra or similar medications daily can benefit your urinary and sexual health.
Some people may experience mild side effects that typically go away with time. Since 1998, Viagra (sildenafil) has been used for treating erectile dysfunction (ED). It’s available by prescription for males ages 18 years and older. Side effects are not frequent and usually not severe. But can you take Viagra daily, and what’s the benefit?
We spoke with Dr. Irwin Goldstein, a primary researcher on the landmark study of oral sildenafil in the 1990s, to answer this and other questions. The short answer is yes; you can take Viagra or its generic form, sildenafil, every day. Whether you need to or should, depends. Since each person is different, you should consult with a doctor about what’s best for you. The honest answer is more useful—and more interesting. These three medications share the same mechanism but create different experiences based on timing, duration, and lifestyle fit.
| Parameter | Value | Notes |
|---|---|---|
| Absorption Rate | Rapid | Peak plasma levels in ~60 minutes |
| Bioavailability | Approximately 40% | Due to first-pass metabolism |
| Half-life | About 4 hours | Time to reduce plasma concentration by half |
| Metabolism | Liver (primarily via CYP3A4) | Enzymatic breakdown |
| Excretion | Mainly feces (~80%) | Some via urine (~13%) |
The real question isn't which is objectively superior, but which aligns with how you actually live.
| Dosage | Recommended Use | Onset of Action | Duration of Effect | Typical Frequency |
|---|---|---|---|---|
| 10 mg | Mild to moderate ED cases | 30-60 minutes | Up to 4-6 hours | Once per day, as needed |
| 20 mg | Moderate to severe ED | 30-60 minutes | Up to 4-6 hours | Once per day, as needed |
| 5 mg | For elderly or sensitive users | 30-60 minutes | Up to 4 hours | Once per day, as needed |
At Maximus, we prescribe all three medications in our Vardenafil, Tadalafil, Sildenafil combination protocol that most providers don't offer. This means we're not invested in pushing one option over another.
The slow dissolution in the mouth allows for targeted local or systemic effects, potentially enhancing the efficacy of the medication. As with any medication, side effects can occur. Common side effects may include headache, flushing, upset stomach, abnormal vision, and muscle pain. If you experience any severe or persistent side effects, contact your healthcare provider immediately. Yes, this medication can be taken with or without food.
However, it is recommended to avoid consuming high-fat meals as they may delay the absorption of the medication. If it is close to the time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take two doses at the same time. It is generally recommended to avoid alcohol while taking this medication as it may increase the risk of side effects such as dizziness and lightheadedness. This medication is not typically used in women.
However, if you are pregnant, planning to become pregnant, or breastfeeding, discuss with your healthcare provider before taking this medication. Store this medication at room temperature, away from heat, light, and moisture. Keep out of reach of children and pets. If you suspect an overdose, seek immediate medical attention or call your local poison control center. Symptoms of overdose may include severe dizziness, fainting, or an erection that lasts longer than 4 hours. We're invested in helping you understand what makes each compound distinct so you can optimize for your specific situation—whether that's sexual confidence, gym performance, cognitive function, or all-day vitality. This guide goes beyond the typical comparison table. You'll get the clinical data that matters, real-world use cases competitors ignore, and a framework for deciding whether one medication fits your life—or whether situational flexibility serves you better. Whether you're a 35-year-old looking to enhance workout recovery, a 50-year-old managing relationship dynamics, or simply curious about what these compounds actually do, you'll leave with a clear understanding of your options.
How PDE5 Inhibitors Work (The Shared Foundation) Before comparing sildenafil, tadalafil, and vardenafil, you need to understand their shared mechanism. All three belong to a drug class called PDE5 inhibitors (phosphodiesterase type 5 inhibitors). When you're sexually aroused, your body releases nitric oxide in penile tissue.
Goldstein discussed the benefits of a daily dose of Viagra. Taking Viagra daily in a small dose is a way to “reduce the intensity of progression of ED,” according to Goldstein. “Daily use of Viagra improves people’s ability to urinate,” Goldstein said. “As men get older, they have a little bit more difficulty urinating because the prostate gets bigger. The prostate, like the penis, consists of a lot of smooth muscle in it, and relaxing the smooth muscle will lessen the grip of the prostate on the urethra.
The higher grip is what causes difficulty in urinating.” “Self-esteem, self-confidence, and self-worth in the male are highly related to sexual function,” Goldstein said. “And there are multiple reports on men taking PDE5 inhibitors and exhibiting better life quality from the perspective of confidence and satisfaction.” “PDE5 inhibitors are endothelial friendly medications,” Goldstein said. The sildenafil citrate 150 mg red pill endotheleum is the lining of the blood vessel. When it gets injured, this leads to the development of plaque or artherosclerosis.” For this reason, Goldstein said “one can argue that taking a PDE5 inhibitor daily has led to “fewer strokes, fewer heart attacks, and better erections.” He noted that the Food and Drug Administration (FDA) had approved a daily dose of Cialis (tadalafil), another PDE5 inhibitor for ED and other uses, in January 2008. Viagra comes as an oral tablet in different dosages. This triggers production of cyclic guanosine monophosphate (cGMP), which relaxes smooth muscle cells and allows blood vessels to dilate.