Choosing Generic Vs Branded Sildenafil


Generic medicines contain the same active ingredient and are equally effective and medically equivalent as the branded products but are available at a lower price. Generic manufacturers have to demonstrate that they are medically identical to the branded product - i.e. they offer the same quality, strength, stability and effectiveness.

Choosing the correct strength



This is the recommended dose if you found 50mg effective, but you experienced side effects at this strength.


Starting dose usually recommended for most men taking sildenafil for the first time.


High strength dose for when 50mg is insufficient, or erection lasts less than 4 hours.

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Sildenafil works for 80% of men

You are not alone. ED is a common problem for men, but most of them have seen real results from using Erectile Dysfunction treatments such as Sildenafil.

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Dr. Phillip Ryan Whitman

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NPI number: 1467595330

Dr. Sajad Zalzala

Board Certified Family Physician
NPI number: 1639311509

Sildenafil FAQ

What is ED?

Erectile dysfunction (ED) is caused by a range of physiological and psychological conditions like stress, anxiety, or depression. The mechanical problem is commonly the same: insufficient blood flow or nervous stimulation, which is required to enable enough blood into the penis to achieve a full and sustained erection. ED can be the first sign of heart or other health conditions, including cardiovascular disease and diabetes.

How common is ED?

ED is very common - 52% of men experience some level of Erectile Dysfunction after the age of 40. However, ED can also affect younger men - in a recent study it was found that one in four patients seeking first medical help for new onset ED was younger than 40 years.

What is Sildenafil?

Sildenafil citrate is the generic version of Viagra, the most well-known treatment for erectile dysfunction (ED). Sildenafil is an effective, modern medicine used to treat erectile dysfunction (ED). Sildenafil pills have been used to treat erectile dysfunction for over two decades and have been proven to be very effective for more than 80% of men. When you take Sildenafil you may be able to:

  • Improve your ability to get and maintain an erection
  • Be more confident in your ability to get and maintain an erection
  • Be satisfied with the hardness of your erections

How does Sildenafil work?

Sildenafil works by inhibiting the enzyme PDE5, which is responsible for the breakdown of cGMP. cGMP is a chemical that is responsible for the relaxation of smooth muscle in the blood vessels, which leads to increased blood flow. By inhibiting the breakdown of cGMP, Sildenafil allows for increased blood flow to the penis, which leads to improved erections.

What are the benefits of taking Sildenafil?

The main benefit of taking Sildenafil is improved erections in men with erectile dysfunction. In addition, Sildenafil can also improve exercise capacity in men with pulmonary arterial hypertension.

How effective is Sildenafil in treating erectile dysfunction?

Sildenafil is effective in treating erectile dysfunction in approximately 80% of men.

Who should not take Sildenafil?

Sildenafil should not be taken by men who are taking nitrates for chest pain or by men who are taking certain alpha blockers for benign prostatic hyperplasia. In addition, Sildenafil should not be taken by women or children.

How do I take Sildenafil?

Sildenafil is taken as needed, typically 30-60 minutes before sexual activity. It can be taken with or without food. Sildenafil should not be taken more than once a day.

Do I need an existing prescription?

You do not need an existing prescription to purchase Sildenafil from ZipHealth. Take our simple online consultation and our medical team will prescribe your treatment for you and medications will be sent directly to you from our partner pharmacy. All generic medications sold through ZipHealth are FDA-approved.

Is health insurance required to buy Sildenafil?

No, you don’t need insurance to buy Sildenafil at ZipHealth. Our affordable prices include a medical consultation at no extra cost.

How quickly does it work?

Sildenafil is absorbed rapidly and it will usually work within 30-60 minutes. It’s important to take it without a meal because fat in a meal can decrease and delay its absorption, which can lower Sildenafil’s effectiveness.

How long does Sildenafil last?

Typically Sildenafil lasts between 2 - 3 hours. In some cases it can last up to 5 hours or more, depending on your dosage, your body’s metabolism and other factors.

Will it work for me?

Sildenafil works for most men and has been shown to help approximately 4 out of 5 men get and keep erections hard enough for sex.

What is the difference between Viagra and Sildenafil?

Sildenafil is the active ingredient in Viagra and is available in a generic, unbranded tablet. The two products are medically identical but because of the brand name of Viagra, the product sells at a substantial premium.

Is buying Sildenafil online safe?

All ZipHealth drugs are manufactured by pharmaceutical companies that are regulated by the FDA. Every doctor you interact with is licensed to prescribe medicine and treat patients in your state and complies with all governing medical laws in the US.

What are the side effects of Sildenafil?

The most common side effects of Sildenafil include headache, muscle aches, back pain, flushing, low blood pressure, abnormal vision, indigestion. Be sure to speak with your doctor or pharmacist if you experience any of these side effects for a prolonged period of time.

What are the precautions I need to take when taking Sildenafil?

You should not take Sildenafil if you are taking nitrates for chest pain or if you are taking certain alpha blockers for benign prostatic hyperplasia. In addition, you should not take Sildenafil if you have a history of heart attack, stroke, or life-threatening arrhythmia.

What are the possible drug interactions with Sildenafil?

Sildenafil can interact with other medications, including nitrates for chest pain and certain alpha blockers for benign prostatic hyperplasia. In addition, Sildenafil can interact with grapefruit juice and certain other medications.

Are there any alternatives to Sildenafil?

For many men suffering from erectile dysfunction, the primary cause may be related to psychological issues and not physical ones. In these cases, counseling can prove to be a very effective form of treatment. Talking with a mental health professional will help to address issues of stress, anxiety, or depression, which can all contribute to erectile dysfunction. For further information contact your doctor.

Other ED Medications
We offer a range of ED medications. View our full range of erectile dysfunction treatments.

Is there anything else I need to know about Sildenafil?

Sildenafil is a safe and effective medication for treating erectile dysfunction in men. However, as with all medications, there are potential side effects associated with taking Sildenafil. You should talk to your doctor about the potential side effects of taking Sildenafil before you start taking the medication.