Sildenafil is a treatment for adult men with erectile dysfunction, sometimes known as impotence.

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What is Sildenafil?

Sildenafil is the name of the active medical ingredient in Viagra.  It also comes in the same strengths and dosages as Viagra, therefore Sildenafil and Viagra will have identical effects. Sildenafil is used to treat erectile dysfunction (ED) and has proven to be extremely effective in ameliorating the effects ED enabling men to achieve stronger erections and last longer during penetrative sex.

Most erectile dysfunction treatments including Sildenafil (Viagra) belong to a class of medications known as PDE-5 (Phosphodiesterase 5) inhibitors. PDE-5 inhibitors will only work if the individual who has taken the medication is sexually aroused.

Alternatives to Sildenafil in this medication class are Cialis, Spedra and Levitra.

Side effects of Sildenafil

Viagra or sildenafil is by far the most popular medicine for ed, and it is a drug that is both safe and effective for most men. However, less than 2% of men who use it might experience some unwanted side effects from it. These negative effects are rarely severe, and many of them disappear after a few hours at most. You may experience the following side effects:

Common side effects

  • Nausea (feeling unwell)
  • Flushing of the face (face turning red)
  • Sweaty palms (sudden feeling of heat in your upper body)
  • Indigestion
  • Your eyesight is going through a colour change.
  • Hazy or blurred vision
  • Visual disturbances
  • Stuffy nose
  • Dizziness

Uncommon side effects

  • Vomiting (throwing up)
  • Skin rash
  • Irritation of the eyes
  • Eyes become bloodshot or reddened
  • Feeling pain in the eyes
  • Observing brief bursts of light
  • Things seem to be brighter than they normally are.
  • Sensitivity to the light
  • Moist eyes
  • A rapid and hammering pulse
  • A racing heartbeat
  • High blood pressure
  • Low blood pressure
  • Muscle pain
  • Feeling sleepy
  • A diminished capacity to feel things
  • Vertigo (feeling things are moving or whirling around)
  • A buzzing sound in each of your ears
  • Mouth becomes dry
  • Congested or stuffed up
  • Inflammation of the nose lining (symptoms include runny nose, sneezing, and a stuffy nose)
  • The ache in the upper part of your abdomen
  • Gastroesophageal reflux
  • The urine contained blood
  • Pain in either the arms or the legs
  • Nosebleed
  • Feeling hot
  • Feeling exhausted

Rare side effects

  • Fainting
  • Stroke or heart attack
  • Heart rhythm becomes abnormal
  • Temporary reduction in the amount of blood flow to some regions of the brain
  • A sensation of constriction of the throat.
  • A numb mouth
  • Bleeding in the posterior chamber of the eye
  • Double vision
  • Diminished clarity in one's vision
  • Inflammation of the eyelids or the eye itself
  • Observing specks or particles of dust in your field of vision
  • Observing haloes, which are coloured rings, around lights
  • The widening of the pupil
  • The shift in the colouring of the white portion of your eye.
  • Penile bleeding
  • Blood in semen
  • Dry nose
  • Inflammation of the tissue that lines the interior of the nose
  • Being prone to irritability
  • Having difficulty hearing or experiencing complete loss of hearing

As your body gets used to the medication and the dose, these usually subside. If you get persistent side effects stop taking the medication and seek advice from your online doctor immediately.

Do the effects last a long time?

Men can use Sildenafil for an extended period of time without putting a significant strain on their health and without increasing the likelihood that they would experience adverse effects.

In addition, there is research that demonstrates that even when men use Sildenafil for an extended period, they do not develop a resistance to the medication and continue to find it beneficial. This indicates that you can continue to use sildenafil for as long as you feel you require it without any adverse effects.

Difference between Sildenafil and Viagra

Viagra is a branded medication that was developed and marketed by Pfizer brand, whereas sildenafil (generic Viagra) is the generic form of Viagra. Sildenafil (generic Viagra) is also sold under the name of Viagra connect. This medication is responsible for its beneficial effects for erectile dysfunction treatment.

Regardless of whether you refer to it as Viagra sildenafil, or both as Viagra or sildenafil (generic Viagra), they are the same thing. They both contain the same active ingredient i.e. sildenafil citrate and work exactly in a similar manner. The cost is typically the primary distinction between the two, generic sildenafil is available at a much lower cost than the branded version of the same medicine i.e. Viagra.

So, after taking a prescription from our online doctors you are free to buy sildenafil online.

What are the benefits of Sildenafil?

According to scientific research, a daily dose of Viagra or Viagra connect (sildenafil) has multiple benefits to offer.

Some advantages are:

Prevents erectile dysfunction from progressing and improves sexual activity

According to researchers, one way to "reduce the intensity of progression of ED" is to take Viagra tablets every day in a small dose. They call it "prophylactic."

Enhances the capacity to urinate

The ability to urinate is improved by daily Viagra sildenafil use.

Because the prostate enlarges with age, men experience a slight increase in difficulty urinating. Like the penis, the prostate contains a lot of smooth muscle. By relaxing the smooth muscle, the prostate's grip on the urethra will be lessened. Urination difficulties are brought on by the higher grip.

Enhances the standard of living

A man's sexual life is closely correlated with his sense of self-worth, self-confidence, and self-esteem.

Favorable to endothelial

This PDE5 inhibitor drug is good for endothelial health. Endothelium serves as the lining of blood vessels. When this lining is damaged, It causes the development of plaque or atherosclerosis.

This is the rationale behind the researcher's statement that "one can argue that taking a PDE5 inhibitor daily has led to "fewer strokes, fewer heart attacks, and better erections.

How does Sildenafil work?

Sildenafil (generic form) enhances the blood flow into the blood vessels of the penis facilitating an erection.

An erection is initiated when you are sexually aroused which stimulates centers within the brain thereby increasing levels of a chemical called nitric oxide.

This in turn activates the production of cyclic guanosine monophosphate (cGMP) throughout the body. Within the penis, cGMP relaxes the penile vessel walls allowing the arteries to fill with blood, this then produces an erection.

In cases of erectile dysfunction, men have a defective cGMP pathway and an enzyme called PDE-5 responsible for the degradation of cGMP is hyperactive. This prevents cGMP from functioning as it should thereby reducing blood flow to the penis.

Sildenafil citrate is an active ingredient of both Viagra and Viagra connect or sildenafil is a PDE-5 enzyme inhibitor i.e. it blocks activity, this allows the cGMP to last longer within the bloodstream and function correctly. Adequate concentrations of cGMP within the body allows the penile vessels to dilate and take in more blood, thereby facilitating a stronger erection.

What if Sildenafil doesn't work?

  • Ensure that you are taking the right strength of sildenafil dosage. The dosage you are taking may not be enough. If you are on the lower dosages of 25mg or 50mg please discuss with your doctor to change your dosage if appropriate.
  • Sildenafil is not a continual medication, for it to work you must be sexually aroused.
  • Certain other medications, some foods and drinks may reduce the effect of Sildenafil. Heavy ‘fatty' meals taken with your tablet or consumption of alcohol will have some impact on the effectiveness of your tablet.

Can women have Sildenafil?

This prescription-only medication is used for erectile dysfunction treatments. At this time, the FDA has only approved this medication for use in male patients. This medicine is currently licensed for ONLY men. Doctors only consider providing Sildenafil to men over 18 years of age.

What does Sildenafil look like?

Both Viagra and sildenafil have the same outward appearance. It is of diamond shape or oval or round. They are typically blue or off-white in color. On one side of the tablets is the word "PFIZER," and the other side will have dosage. For example, V50 if using Viagra or sildenafil 50mg or followed by either 25/50/100 if using Viagra 25mg/50mg/100mg. The tablets come in a variety of dosage strengths.

How to take Sildenafil?

Among many other oral medications, sildenafil is one of them. Take this blue pill as directed with a full glass of water or fruit juice (but not grapefruit juice).

It is recommended that patients using sildenafil for erectile dysfunction do so on an empty stomach. If you take it with heavy meals, it could potentially delay its onset of action.

When you take Sildenafil, what happens?

Sildenafil is used to treat erectile dysfunction by increasing the amount of blood that flows to the penis when the patient is sexually stimulated. Because of the increase in blood flow, one may get an erection. Sildenafil is used to treat pulmonary hypertension by relaxing the blood arteries in the lungs, which in turn makes it easier for blood to circulate.

Can alcohol be consumed while taking sildenafil?

Viagra or Sildenafil (generic version) is by far the most successful Ed treatment. On the other hand, drinking alcohol is likely one of the factors that led to the development of ed in the first place. Drinking alcohol can have a negative impact on a person's ability to have sexual satisfaction.

Consuming alcohol influences the gland in the brain that produces hormones, which can result in decreased testosterone output and perhaps hormone-induced erectile dysfunction (ED). It is also believed that the quantities of alcohol in the body can influence the nerves in the penis that induce an erection; however, the precise mechanism by which alcohol causes erectile dysfunction is not yet established. You should avoid drinking alcohol if you're using Viagra or the generic version of it because you've had trouble getting or maintaining an erection in the past.

Key factors that play role in the efficacy of Sildenafil

There are several factors that take part in the efficacy of sildenafil tablets, including the following,

  • Avoid taking Sildenafil with a large ‘fatty' meal as this can slow down the absorption of Sildenafil, therefore, taking longer to work.
  • Limit alcohol consumption, this can affect the absorption of Sildenafil and alter your BP and blood flow, as well as increase side effects such as dizziness.
  • Avoid ingesting milk, watermelon, and grapefruit juice at the same time as your tablet.
  • Swallow the tablet whole, crushing the tablet can degrade and reduce the effectiveness of the active ingredient.

And this is how sildenafil works best for you. If you are not benefiting from Sildenafil despite having already increased your dosage and have followed all the advice listed above, it is recommended you consult your doctor.

Who shouldn't take Sildenafil?

There are certain individuals who should not take sildenafil. Before taking sildenafil, you should consult your primary care physician or pharmacist if you have any of the following conditions:

  1. If you experienced a hypersensitivity or allergic reaction to sildenafil or any other medication
  2. If you treating your chest pain (angina) with medications called nitrates
  3. Have a major issue with either your heart or your liver
  4. Having recently recovered from a heart attack, stroke, or other cardiovascular condition, your physician should carefully evaluate whether or not your heart can handle the added strain of having sexual activity.
  5. Have low BP (hypotension)
  6. Suffer from an extremely uncommon inherited eye condition, such as retinitis pigmentosa
  7. Have an anomaly of the red blood cells known as sickle cell anemia, a malignancy of the white blood cells known as leukemia, or multiple myeloma (cancer of bone marrow)
  8. Own an abnormality in the shape of your penis or Peyronie's illness (curved penis)
  9. Suffer from an ulcer of the stomach
  10. Have a bleeding problem like Hemophilia

If your body has any sort of health condition mentioned above, then before you buy sildenafil online, must take a consultation with your doctor.

How long does Sildenafil last?

Viagra or Sildenafil (generic version) stays in the bloodstream for up to 4 hours (at the ideal plasma concentration), but its benefits start to wear off after that time has passed. In most males, it begins to function within 30–60 minutes, and it is at its most effective within the first 2 hours.

Can a Sildenafil tablet be taken in conjunction with other erectile dysfunction medication?

No, you should never take Sildenafil tablets in conjunction with any other erectile dysfunction medications. Since all drugs for erectile dysfunction have the same mechanism of action, taking two or more of them at the same time could result in major adverse effects or even an overdose.

Drug-to-drug interactions

The following medications may have an interaction with Sildenafil. If you are currently taking any of the following, you need to make sure that you inform your doctor about it:

  • Use of nitrates
  • Use of poppers or recreational drugs (nitric oxide donors)
  • Inhibitors of proteases (used to treat HIV)
  • Medication, known as alpha-blockers
  • Riociguat, prescribed to patients with pulmonary hypertension.

Herbal or supplementary medicines have the potential to induce side effects and interfere with the effects of Sildenafil. You should discuss any herbal remedies you are currently taking with your online doctor service to determine whether or not there is a potential for adverse interaction between the two.

Sildenafil strengths/dosages

Dosages Sildenafil can be prescribed in varying strengths of 25mg, 50mg and 100mg. All of these are available from the Access Doctor website.

Low strength

  • Sildenafil 25mg tablets are recommended for men over 65 years of age and those that are sensitive to the effects of sildenafil.

Standard strength

  • Sildenafil 50mg tablets are the usual starting recommended dose by the doctor.


  • Sildenafil 100mg tablets are the maximum recommended dosage. It is usually only recommended by the doctor after men have not achieved adequate benefits with the standard strength capsules.

Before adjusting the dosage of erectile dysfunction medications, be sure to get your physician's approval beforehand.

If you have never tried Sildenafil before and are unsure which dose to start with, Doctor's suggest that you begin with sildenafil 50mg.

Both Sildenafil and Viagra are administered in the same manner since they have the same active ingredient (sildenafil citrate).

How often should you take Sildenafil tablets?

Take one sildenafil tablet per day. Shouldn't take more than one tablet a day, even if the tablet is of the lowest dose i.e. sildenafil 25 mg (the lowest dose available). If you take more than one tablet in 24 hours, then in this condition, you are putting yourself in danger because you have not been evaluated for that dosage. Additionally, the drug levels in your body may build up, causing side effects, so you should avoid taking multiple doses of the medication. In addition, the maximum dosage of sildenafil that can be used in a single day is 100 mg.

Consume one tablet of sildenafil approximately one hour before you start to fulfil your sexual desire.

Precautions to take before taking Sildenafil tablets

Precautions and safety measures must be taken before taking any medicines or drugs. It helps you to avoid any inconvenience in your treatment.

Sildenafil treatment is mainly used for treating erectile dysfunction.

Talk about your health history and current health conditions to your doctor. So that they came out with the best ed treatment for you, either sildenafil or any other ed medication.

When used, does Sildenafil (Viagra) make you more sexually active for longer?

If you struggle to get an erection or find that you are losing your erection too rapidly, using Viagra may be able to help you remain sexually active for a longer period.

After an orgasmic experience, you run the risk of losing your erection, and it may be difficult for you to get another one for a long time. The refractory period is a term used to describe this entirely natural occurrence. Viagra can help you last longer by lowering your refractory period. This means that you will be able to have sex more quickly after you have orgasmed because it will take less time for your body to recover from the experience.

Can Sildenafil lower blood pressure?

Some men may experience changes in their blood pressure because of taking sildenafil.  Studies have shown that men who take Viagra or sildenafil see a reduction in their BP, regardless of whether they previously suffered from BP issues. This drop is deemed to be "clinically small," which implies that it is not going to cause any substantial health issues for most men.

It should not come as a surprise that sildenafil lowers BP, given that this effect was discovered by chance while researchers were looking for novel ways to treat hypertension. One of the reasons Viagra makes it simpler to get an erection is because of the way it lowers BP.

Interesting new findings on Sildenafil / Viagra

These two studies on Sildenafil or Viagra are very intriguing, and we will go over them in more detail below,

The link between sildenafil and the formation of blood clots

Viagra works to produce erections in men by elevating levels of cGMP, a molecule that is also essential to the process of blood coagulation. According to the findings of the study, Viagra may raise the risk of developing blood clots since it causes levels of cGMP to rise.

The link between sildenafil and the functioning of the brain.

Taking the medication sildenafil was associated with a reduced risk of developing Alzheimer's disease in patients. In human neurons grown in culture, sildenafil promoted cell proliferation and decreased Alzheimer's disease biomarkers. The findings lend credence to the idea that sildenafil could be investigated further as a potential treatment for Alzheimer's disease

Can you buy sildenafil online without a prescription?

Sildenafil is not available for purchase over the counter. It is a prescription-only medication, so you cannot buy sildenafil online without a prescription. If you take this medication when you do not have a need for it, there is a possibility that you will develop a variety of unhealthy illnesses because of using this drug.

If you are taking an online prescription from our online doctor service then we will prescribe Sildenafil safely if it is the right erectile dysfunction treatment for you.

Is it safe to buy Sildenafil online without risk?

Yes, buying medicines online from reputable and authorized online pharmacies like Access Doctor makes it possible to do so without risk.

Make sure that the online pharmacy from which you buy Sildenafil online in the UK is registered with the General Pharmaceutical Council (GPhC). This organization is responsible for ensuring that the company is selling original Sildenafil and that real doctors are prescribing it.

Where to buy Sildenafil online?

Getting prescription online from a legal online pharmacy is your best bet. A pharmacist and a doctor are the best resource for information regarding branded and generic medication and their potential effects.

One should not order sildenafil tablets online from websites that provide prescription medicine at lower sildenafil prices. They may be fake or the medicines they provide may not be of the same quality.

People who would rather not leave the comfort of their homes to seek medical assistance should look for UK registered doctors and pharmacists. That means they have their credentials verified by the General Medical Council. Also, they can buy sildenafil online from them.

Consultation with the doctor

In addition to taking sildenafil tablets, ed treatment requires proper consultation from a specialist. You may not be able to treat erectile dysfunction by yourself, it may worsen your condition.

Our doctors also provide free online consultations with a free private prescription.

Is counselling a good option?

Counselling may be helpful for certain men whose erectile dysfunction is due to psychological issues. These guys may benefit from receiving counselling.

All men who are struggling with erectile dysfunction, which can be a stressful problem, should make an appointment with a medical professional i.e. online consultation with their online doctor at access doctor, to have a comprehensive evaluation and guidance.

Access Doctor, an online pharmacy

We at Access Doctor, are a UK registered online pharmacy among other UK online pharmacies, provide you with a convenient solution to get your erection back. Our online doctor service is also governed by the general pharmaceutical council. After giving you a private prescription of your prescription-only medication, our doctors recommend the best possible treatment for your erectile dysfunction.

Therefore, there is no need for you to hold back if you are also experiencing issues with your erection. You should start your road toward a more pleasant sexual life by obtaining the patient information leaflet that was prescribed to you by Access Doctor.

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