How does Viagra work? Effect, duration and tips explained | Fellos
Learn how Viagra supports blood flow, what the intake tips are, and how you can discreetly obtain a prescription through Fellos.
How exactly does Viagra work?
Viagra is the best-known medication for erectile dysfunction. Many men are familiar with the name. However, not everyone knows exactly what the drug does in the body.
It is mainly used by men who have difficulty getting an erection or maintaining an erection long enough during sex.
At Fellos, you can obtain it without visiting a clinic. You fill in a short online intake form. A Dutch doctor will then assess your situation. If treatment is possible, you will receive a prescription. The medication will then be delivered discreetly to your home via the pharmacy.
In this blog, you can read about how Viagra works. You will discover how quickly it takes effect. We also explain how long the medication works and what you need to take into account when using it.
What happens in your body when you use Viagra?
An erection is caused by blood flow to the penis. This is due to a complex interaction of nerves, blood vessels and hormones. When (sexual) stimulation occurs, nerves send signals from the brain to the penis. This causes more blood to flow to the erectile tissue.
In some men, this process does not work as well. Viagra helps the blood vessels to relax more easily. This makes it easier for blood to flow. Research shows that factors such as age, stress, diabetes, cardiovascular disease and lifestyle can play a role in this.
The drug does not cause spontaneous erections. Sexual stimulation is still necessary. Without arousal, nothing usually happens. Viagra can therefore be seen as a support. It helps the natural process. It does not replace it.
How quickly does Viagra work after taking it?
Many men notice the effect within an hour. In general, it starts working between 30 and 60 minutes after taking it. This varies from person to person.
That is why it is usually recommended to take the drug about an hour in advance.
What you eat can have an influence. A heavy meal can sometimes slow down the absorption of the drug. Fatty foods in particular can enhance this effect.
A few simple tips that often help:
- Take Viagra on time.
- Swallow it with water.
- Avoid a large meal just before taking it.
This increases the chance that the effect will be present when you need it.
How long does Viagra work?
The effect usually lasts for several hours. For many men, this is four to six hours.
This does not mean that you will have an erection for all that time. It just means that during that period, the body responds more easily to sexual stimuli.
The exact duration varies from person to person. Age can play a role, as can health. The chosen dosage also has an influence.
A doctor can help you determine the right amount. This often produces the best results.
What factors can influence the effect?
The effect of Viagra does not only depend on the medicine itself. Daily habits also play a role.
Research has shown that alcohol can reduce the effect. The body then responds less strongly to stimuli.
A heavy meal can slow down absorption. Fatty foods in particular have this effect.
Stress also plays a role for many men. Tension can make it more difficult to get an erection.
Fatigue sometimes has the same effect. The body then responds more slowly.
Some medications can also have an influence. That is why a medical assessment is always important.
A few practical tips:
- Drink little alcohol.
- Eat lightly before taking the medication.
- Make sure you get enough rest.
Can you use Viagra safely?: Who is Viagra suitable for and who is it not suitable for?
Viagra is intended for men with erectile problems. In many cases, it can be an appropriate treatment.
However, the medication is not suitable for everyone. Research shows that some medical conditions require extra caution.
For example, specific serious heart problems or already very low blood pressure.
Certain medications can also make a combination unsafe.
That is why a doctor always assesses your health first. This is also the case at Fellos.
After the online intake, a Dutch doctor will assess your answers. Only then will a decision be made as to whether the medicine is safe for you.
Possible side effects
As with many medicines, side effects may occur. Most are mild.
Common complaints resulting from research are:
- Headache
- A red or warm face
- A blocked nose
- Heartburn
And in some cases, users may experience mild dizziness.
Not everyone experiences these side effects. Many men use the medication without any problems. Serious side effects are rare. Nevertheless, it is important to always use medication as prescribed.
At Fellos, a doctor only prescribes dosages that are considered safe.
How does Fellos help with erection problems?
Discussing erection problems can feel difficult. Many men therefore delay seeking help.
Fellos tries to lower that threshold.
The process is simple.
- You start with a short online intake. This takes about three minutes.
- A Dutch doctor will then review your answers and assess whether treatment is possible.
- If so, you will receive a prescription. The medication will then be sent via a registered pharmacy in discreet packaging.
Fellos doesn't just look at medication. Lifestyle often plays a role too. Stress, sleep and mental factors can affect sexual performance.
Taking a broader view often leads to a better approach.
What men say about their experience with Fellos
Many users particularly appreciate the convenience. Everything can be arranged online.
You don't have to make an appointment in a waiting room. That gives many men peace of mind.
Reviews often mention the same points. The process is clear. Communication is clear. Discretion is also often mentioned.
Many men feel that they are taken seriously. This helps them to seek help more quickly.
Safe and reliable treatment through Fellos
Erectile problems are more common than many people think. Fortunately, safe treatments are available.
At Fellos, you receive guidance from Dutch doctors. Everything is done online. No waiting times or awkward conversations.
The medication comes directly from a registered pharmacy. Original and discreetly delivered.
Would you like to know what options are available to you?
Start your intake at Fellos today. You will quickly discover which treatment suits your situation.
- Alpert, J. S. (2005). Viagra: the risks of recreational use. The American Journal Of Medicine, Volume 118(6), p569-570. https://www.amjmed.com/article/S0002-9343(05)00257-3/fulltext
- Burnett, A. L., et al. (2018). Erectile Dysfunction: AUA Guideline. The Journal Of Urology, 200(3), 633–641. https://doi.org/10.1016/j.juro.2018.05.004
- Moreira, S. G., Brannigan, R. E., Spitz, A., Orejuela, F. J., Lipshultz, L. I., & Kim, E. D. (2000). Side-effect profile of sildenafil citrate (Viagra) in clinical practice. Urology, 56(3), 474–476. https://doi.org/10.1016/s0090-4295(00)00649-x
Fellos adheres to strict editorial guidelines for sources to ensure the accuracy and timeliness of our content. Our content is based on scientific publications, research from academic institutions, and reputable medical organizations. If you notice an error, please let us know at [email protected].
This article is for informational purposes only and does not constitute medical advice. The information herein is not a substitute for professional medical advice and should never be relied upon. Always discuss the risks and benefits of any treatment with your doctor.
This content was last updated on
9/3/2026

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