Sildenafil Citrate Ingredients

Medications used in treating both erectile dysfunction and pulmonary hypertension list “sildenafil citrate” as their active ingredient. Much like the name suggests, there is only one ingredient that does all the work in these medicines: sildenafil citrate, commonly shortened to just sildenafil. Sildenafil citrate is synthesized through a complicated process, but the end result is a single substance that is chemically different from its ingredients.

Sildenafil medicines often contain inactive ingredients such as microcrystalline cellulose, a common anti-caking agent, and food-grade dyes such as titanium dioxide and FD&C Blue #2 aluminum lake. Unless you have a specific allergy to certain food dyes or other substances commonly found in pills and tablets, if you can take one sildenafil citrate product safely, you can use them all safely.

What is Sildenafil Citrate?

Sildenafil citrate is a citrate salt of sildenafil, meaning it’s a powder created from sildenafil and a salt derived from citric acid. Sildenafil is a vasodilator, a kind of drug that widens, or dilates, your blood vessels. Because of its ability to widen blood vessels and increase blood flow to various parts of the body, sildenafil has become popular in the treatment of pulmonary hypertension and erectile dysfunction.

Pulmonary hypertension, sometimes called pulmonary arterial hypertension or PAH, is a potentially life-threatening condition where the blood vessels connecting your heart and lungs have abnormally high pressure, constricting them and reducing your body’s ability to oxygenate blood. Sildenafil treats this condition by reducing dangerously high blood pressure in the lungs, letting blood flow and get oxygenated more easily and allowing you to be more active.

Erectile dysfunction, while less life-threatening, is arguably much more embarrassing; it’s the inability to achieve and maintain an erection. By relaxing and widening blood vessels, sildenafil can increase blood flow to the penis, making sexual intercourse easier.

Pfizer’s brand name Viagra has been one of the most popular, and expensive, sildenafil tablets on the market.

Sildenafil vs Viagra: Is Viagra the Same as Sildenafil?

Yes! Viagra by Pfizer is the brand-name sildenafil tablet for erectile dysfunction. A Viagra tablet of a certain dosage will work identically to a generic sildenafil tablet of the same dosage, so if you have a prescription for Viagra, you can safely use generic sildenafil instead.

How Does Sildenafil Citrate Tablets Work?

Sildenafil citrate belongs to a kind of vasodilators called PDE5 inhibitors. Normally, PDE5 blocks the action of cyclic GMP, a chemical your body naturally produces. Cyclic GMP relaxes and widens your blood vessels, so when it’s blocked by PDE5, your blood vessels constrict and blood flow is reduced. Sildenafil inhibits PDE5, so cyclic GMP can widen blood vessels without interference.

Sildenafil citrate tablets are the most popular way to take doses of sildenafil. They can be swallowed just like any other pill. Sildenafil tablets can also be cut or crushed, so you have a bit more control over your dosage and how you take it.

Sildenafil Citrate Ingredients

Sildenafil is a prescription medication, so it can be found in prescription medications, specifically brand names Viagra and Revatio, as well as their generic counterparts.

Being a prescription medication, sildenafil citrate is a regulated chemical, and thus not found in any foodstuffs. Many foods and herbs can have similar effects, and can help manage your pulmonary hypertension or erectile dysfunction, but they do not actually contain sildenafil–or at least, they should not. Buyer beware: many “natural supplements” were found to have added sildenafil citrate, often in excess of the maximum prescribed amount, and taking these supplements could lead to serious consequences, up to and including death!

Is Sildenafil Citrate Safe?

In controlled doses, yes. While it’s possible to overdose on sildenafil, like many other drugs, you should be perfectly safe as long as you follow your doctor’s directions.

The severe side effects of sildenafil include sudden vision loss in one or both eyes, sudden hearing loss in one or both ears, and a painful erection lasting more than four hours. These are incredibly rare with the responsible use of sildenafil according to your doctor’s directions, but if one of these happens to you, get emergency medical attention immediately.

Sildenafil Citrate Side Effects

We’ve already touched on the rare severe side effects that require immediate medical attention: sudden vision loss, sudden hearing loss, and priapism. Sildenafil also has some milder side effects, including headaches, nasal congestion, flushed skin, and upset stomach. These side effects can be treated with whatever over-the-counter medications your doctor approves of, if they prove to be bothersome.

Sildenafil Citrate Tablets 100 mg

Sildenafil Generic

Multiple brands of generic sildenafil tablets are available via online pharmacies, at a wide variety of prices. A supply of 30 generic 20 mg sildenafil tablets can cost as little as $15 or as much as $536. The 20 mg tablets will be much cheaper than the generic 25 mg, 50 mg, or 100 mg pills, however; a 10 pill pack of any of those doses will set you back $600. It’ll still be cheaper than the brand name Viagra, but if cost is an issue, ask your doctor for a 20 mg sildenafil generic prescription if possible.

These prices may be subject to change soon, especially at pharmacies within the US. As of the time of writing, Viagra’s patent just recently expired, and domestically-manufactured generics will soon be widely available. This will undoubtedly impact the medicine’s prices both within the US and with pharmacies that ship internationally.

If you’re looking to buy safe, reliable, and affordable generic sildenafil online, keep an eye on our Top List of Recommended Pharmacies.


When buying sildenafil online, always get a prescription from your doctor first. Sildenafil is a prescription drug within the United States, so you cannot legally buy it without one. Reliable online pharmacies offering quality generic products won’t sell to you without a prescription; sites that offer sildenafil without a prescription are often untrustworthy.

Buying any medicine without a prescription puts you at risk of online scams and shady sellers. Some will take your money and never deliver a product. Others will ship you a product with no active ingredient, additional harmful ingredients, or dangerously high doses of the active ingredient.

Before buying any medicine online, you should consult your doctor so you can avoid products you’ll have an adverse reaction to or products that won’t work for you at all.

Sildenafil citrate is a safe and trustworthy prescription drug for the treatment of pulmonary hypertension and erectile dysfunction. It works by relaxing your blood vessels and increasing blood flow to various parts of the body. Generic sildenafil products are available for reasonable prices in the pharmacies that are featured in our TOP List of verified online providers.