How Does Viagra Work? All The Information You Need

In this article, we’ll discuss how Viagra works along with some additional useful related information.


Viagra is the trade name for a drug called Sildenafil. It’s one of a class of medications known as PDE-5 (Phosphodiesterase type 5) inhibitors.

Viagra and the other PDE-5 inhibitors can help men with Erectile Dysfunction (male impotence) by enhancing the erectile response when a man is sexually stimulated. Aside from Viagra, the other drugs in this class are Cialis (Tadalafil) and Levitra (Vardenafil).

Viagra in different forms are well found across physical stores (pharmacies) and have been so popular on various e-Commerce portals. Names are distinguished, but the kind of tablets is the same in Viagra that was in the market in 2017.

How Does Viagra Work?

Viagra and its generic, Sildenafil Citrate, are two of the most popular drugs in the market today.

Viagra is only useful when there is sexual arousal. To understand how it works with and get the best results, you need to understand the mechanics of how a man gets an erection. When you get sexually stimulated, the nervous system in the erectile tissue of your penis releases nitric oxide (NO).

The nitric oxide stimulates an enzyme that produces something called a messenger cyclic guanosine monophosphate (cGMP). One of the results is that the arteries in the penis dilate and the blood can flow more easily. Another result is the erectile tissue itself fills with blood. Both these processes result in an erection. Viagra works by maintaining the level of cGMP in smooth muscle cells.

If you are not turned on, your brain will not stimulate the release of any nitric oxide, and you will not produce any cGMP.

1. Dosage Options

25 mg, 50 mg, 100 mg, 150 mg, and 200 mg are the available dosage options in Viagra and Sildenafil Citrate. However, the package in the number of pills varies as the cost does.

2. Response Time Of Viagra

A single dose triggers 360 minutes of effect to reach as the maximum threshold for a higher concentration of Viagra. However, time frames vary, from 120-240 minutes or more respectively, from an individual to an individual concerning dosages & body conditions. 

And, it might take at least 30 to 60 minutes alongside sexual stimulation after its intake.

3. Viagra Side Effects

The most common side effects of Viagra & Sildenafil Citrate include nasal congestion, headaches, indigestion, back pain, facial flushing, and muscle pain. These side effects are rare and often subside as the drug gets elimination from the body. The possibility of side effects with Viagra is relatively less if taken responsibly and advised by a doctor. 

Other side effects that are considered severe include chest pain, breathlessness, irregular pulse rate, vision impairment, and sudden hearing loss. Another serious but rare side effects include priapism, which is a painful, prolonged erection that may sustain for more than three hours. Priapism is a medical emergency and needs immediate medical attention. If left untreated, priapism could damage the penile tissues.

4. Overdose Or Missed Dose

Overdose can increase the risk of harmful adverse effects, and they may differ from an individual to an individual. In such instances of an overdose, seek medical attention right away to prevent any medical complications.

Take the skipped or missed dose as soon as there is a recall. It doesn’t matter if the skipped dose is near to the time frame of the next dose; continue consuming the regular schedule leaving behind the skipped one. Do not take extra medicine to compensate or to make up the missed dose.

5. Viagra Interactions: Grapefruit And Alcohol

Completely keeping away alcohol is the best recommendation. Too much alcohol with Viagra or Sildenafil Citrate can lead to adverse effects.

Avoiding both grapefruits and popular Viagra or Sildenafil Citrate tablet together helps yield best results. Grapefruits contain a substance that can alter the amount of drug in your body, turns to have increased side effects. So, taking the ED tablet alone is the preferable option.

6. Does Viagra Prevent Other Diseases?

Viagra or Sildenafil Citrate cannot protect against sexually transmitted infections such as HIV/AIDS.  Sildenafil Citrate or Viagra is just used to reduce Erectile Dysfunction (ED) and should never be used to reduce or eradicate other diseases.

7. Uses

Sildenafil Citrate  was first intended to treat chest pain and angina. However, patients prescribed Sildenafil Citrate  for chest pain reported an interesting side effect. An increased amount of erections lead to quick approval to treat erectile dysfunction.

Since then, Sildenafil Citrate’s indications have expanded to include pulmonary arterial hypertension in addition to erectile dysfunction. Sildenafil Citrate 20 mg can treat high blood pressure and pulmonary arterial hypertension. Viagra and Sildenafil Citrate 25 mg, 50 mg, and 100 mg can eradicate Erectile Dysfunction.

8. Different Versions

Sildenafil Citrate is the component of two common brand drugs, namely Revatio and Viagra. The FDA approves this generic form for two different uses. Revatio is used to treat pulmonary arterial hypertension, while Viagra treats erectile dysfunction in men.

Revatio-equivalent Sildenafil Citrate is only sold as a 20 mg tablet, while Viagra’s Generic Sildenafil Citrate is on sale in 25 mg, 50 mg, and 100 mg tablets.

Birth Control Pills FAQs: 10 Most Common Questions Answered

In this article, we’ll answer some of the most commonly asked birth control pills faqs on the internet.


Birth Control is now possible with different types of methods, especially pills; which are the primarily preferred option. The early 1960s saw the first hormonal contraceptive method and is named to be one of the most significant advancements in the history of the pharmaceutical sector.

Birth Control Pills FAQs

1. How Do The Pills Work?

Birth Control pills act as a hormone medication to prevent pregnancy. Most medicines have two major hormonal components, namely- Progestin and Estrogen. The two components control menstrual cycles and prevent the release of an egg during the menstruation, respectively.

  • Progestin: This hormonal component makes the vaginal fluid thicker, blocking the sperm from reaching the egg for fertilization to occur. This blocking helps to change the lining of the uterus and prevents the attachment of the fertilized egg.
  • Estrogen: This hormone prevents ovulation by suppressing ovulation related hormones. In such a case of suppression, a fertilized egg cannot form and hence prevents birth.

2. Who Should Avoid These Pills?

Not necessarily, unless pregnancy occurs or illegal use is the case.

Some women have issues while consuming Birth Control pills with two hormonal components. Those with a history of blood clots, heart diseases, or breast cancer might face such issues. But some drugs come as Progestin-only-pills that make the real cause of pregnancy prevention happen, which are safer too.

3. How Long Do They Take To Work?

In general, few pills are effective in three days while a few others take three to five days. If consumption of Birth Control pill is for the first time, a non-hormonal back-up should be used letting the real cause of birth-control more effective. Non-hormonal back-up includes latex condoms, spermicidal foams, and gels.

4. Do I Need To Take Them Regularly?

To achieve maximum contraceptive effectiveness, consume Birth Control pills as directed by the doctor and at intervals not exceeding 24 hours. Probably, the routine time every day is much advisable with a combination pill and is mandatory to maintain a fixed schedule with Progestin-only-pill consumption, respectively. Here is the list of Birth Control pills that can are available through our website.

5. How Effective Are These?

100% effectiveness is possible in case there is no missed dose with a timely schedule. But there are possibilities for the occurrence of pregnancy as few women forget implementing the medication procedure and participate in sexual activities.

6. What Are Its Side Effects?

Moodiness and irritability might occur during the consumption of Birth Control Pills. Contact the doctor who is administering your medical condition soon when there is any side effect.

Also Read: How To Start Birth Control?

7. Is There Any Drug Interaction?

Few antibiotics, some forms of anti-fungal medications, and few other drugs that are on regular dosages at times show interference with Birth Control pills. Interactions might lead to side effects that are mild or severe. Talk to the physician to know the interactions with other medications that, in turn, lessens the effectiveness of contraceptive pills.

8. How Soon After Stopping The Pill Can I Try To Conceive?

Stop the consumption of pills and do not use any contraceptive method. When women are in sexual contact right away with the partner, which might instantly be the starting point to conceive. Women might notice pregnancy effects even during irregular consumption of birth control pills.

9. Does One Type Of Pill Work For Everyone?

Many Birth Control pills are available in the market, which triggers similar results. But, after a complete survey of the body condition with a history of medications, the doctor might conclude on which Birth Control pill suits you better. In a few cases, a trial pack would also be recommended to understand how the pills in the pack react with your body.

It is not recommended to have self-medication although you have a plan to prevent pregnancy.

10. What Happens If I Skip A Dose?

Take the skipped or missed dose when you recall and as soon as possible. It doesn’t matter if the skipped dose is near to the time frame of the next dose, continue consuming the regular schedule leaving behind the skipped one. Do not take extra medicine to compensate or to make up the missed dose.