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Buy Sildenafil Online


Sildenafil is a generic version of Viagra with a proven history to successfully treat ED. At a much lower price point, sildenafil saves you money without compromising quality. Sildenafil contains the same active ingredient as Viagra, and it works in the same way.
Starting at $109 per Month

Quality Tested Products
Us Based Pharmacies
Licensed Physicians

What is Sildenafil?

Sildenafil is a phosphodiesterase type 5 (PDE5) inhibitor that increases blood flow into the penis after sexual stimulation. Sildenafil helps men with erectile dysfunction achieve and maintain an erection.
Hand holding the Sildenafil product

Best Uses for Sildenafil

Improves erectile function
A meta-analysis of 27 sildenafil clinical trials in which men with ED took sildenafil as needed discovered that sildenafil was more likely (57%) to lead to successful sexual intercourse than placebo (21%). Sildenafil significantly improved erectile function in all subgroups examined.
Improves confidence and quality of life
In one study, 841 men with ED treated with sildenafil had higher Self-Esteem and Relationship (SEAR) International Index of Erectile Function (IIEF), intercourse success rate, response to global efficacy, and global satisfaction scores than men who took a placebo.
May reduce cardiovascular disease risk
In a large study of over 20,000 US men with ED, PDE5i exposure (oral ED medications such as sildenafil) was associated with lower incidence of major adverse cardiovascular events (13% lower), cardiovascular related death (39% lower), and overall mortality risk (25% lower) compared to non-exposure. Higher PDE5i dosages were associated with lower risk of cardiovascular disease and death.
Lacey H
Katie was super helpful and knowledgeable when placing a refill order. She processed the order within a few mins via the chat option. Very easy! Have ordered several times and it’s always been super easy and very reliable! Sign up for the auto-fill, it makes things super nice!!
Joselys P
My experience was great! They called me and explained everything I needed to know regarding Semaglutide and the whole process. Very comforting experience.
Jeremiah S
I have been a patient of Invigor Medical for about 2 years, and I have always received prompt responses from everyone, from salespeople to physicians… I just refilled my medication today, and it took about 5 text messages to get it taken care of. Thank you for helping me grow older without getting old.
I love Invigor Medical! They have the best customer service ever and wonderful products. Highly recommend this company!!!
Carl S
Super easy to work with, I received a helpful call a few minutes after submitting my initial request and thry answered all my questions. So far so good!
Mario C
Always super knowledgeable about all their peptides and other offerings. Great customer service as well!
Michelle R
I’ve never ordered medication this way but I’ve been pleasantly surprised with the ease of the process. Brooklyn has been amazing in helping me to navigate ordering and decide which medications I should discuss with the provider.
Mark E
I have been working with Invigor Medical for about a year now. Kudos to Aryanna for doing a very good job. She helps me get my order approved, offers options, and my order is correct and shipped out efficiently. I recommend this company.
Jen R
**UPDATE** IT’S THE REAL THING! Semaglutide order arrived within a week. All supplies included with very thorough instructions. Extremely noticeable reduction in appetite. Will DEFINITELY buy from Invigor again!
Jonathan M
I have been working with Invigor Medical for several months, and find their service to be excellent. Today I was contacted by Courtney, who was checking in to see how things were going. She was very nice and helped me to save money on my semaglutide injections by switching to a 2 month subscription. Thank you Courtney! You were so kind and helpful.
Guido M
Everyone I have dealt with here has been helpful, respectful, and hard working. Particularly treatment specialist Melissa – making sure that I get the assistance I need. It has been a very pleasant experience.
Murrell S
They were nice, helpful and fast. The service rep that helped me was awesome!
Sildenafil Bottle with Two Tablets
What's Included with Sildenafil
Rx Consultation
Discuss your treatment plan with one of our licensed practitioners.
All medications and supplies included, no hidden fees.
Our well-trained medical staff are ready to answer your questions.
Sildenafil Sitting on Desk

How to use Sildenafil

Sildenafil is taken orally at least 60 minutes prior to sex, as directed. Consuming high-fat meals can influence sildenafil absorption.

Sildenafil Side Effects
  • Headache
  • Flushing
  • Indigestion
  • Abnormal vision
  • Nasal congestion
  • Back pain
  • Muscle aches
  • Nausea
  • Dizziness
  • Rash

Frequently Asked Questions about Sildenafil

Sildenafil is the generic brand of Viagra. The Food and Drug Administration requires that generic drugs be bioequivalent to brand-name medications. Therefore, the generic drug must have the same active ingredient, strength, and dosage. Because patent restrictions have expired, generic medications can be offered at a lower price than brand-name medications.

Sildenafil wears off in about four hours. Most men take sildenafil about one hour before anticipated sexual activity. It takes about 30 minutes to work, and the effects last for about four hours.

It is important to differentiate the effects of the medication from an erection. Sildenafil requires sexual stimulation to work. Once it does, an erection should not last more than four hours. Prolonged, painful erections can cause damage to the penis.

The recommended adult dose for sildenafil is one 50mg tablet daily as directed. The maximum recommended dose is 100 mg daily.

Your healthcare provider will determine the best sildenafil dosage for you based on your past medical history and any medications you may be taking. It is important to not take more sildenafil than is prescribed and not take a dose more than once every 24 hours.

The side effects of some ED medications, such as sildenafil, can be made worse when combined with alcohol. These side effects may include:

  • Lower blood pressure
  • Dizziness
  • Lightheadedness
  • Fainting
  • Flushing
  • Headache
  • Heart palpitations

To decrease your risk of side effects, avoid or limit the use of alcohol when taking sildenafil. However, if you drink alcohol regularly, talk to your healthcare provider about ED treatment options that do not adversely interact with alcohol.

Yes, if your healthcare provider prescribes 100 mg. Sildenafil 100 mg is the highest safe dose. If sildenafil is not working at the prescribed dose, contact your healthcare provider before changing the dose. Your healthcare provider may also suggest a different ED medication. For example, some men find that Trimix or tadalafil is a better option.

Alcohol consumption can increase the risk of side effects when taking sildenafil. If you consume alcohol regularly, discuss your use with your healthcare provider to see if sildenafil is your best option.

Grapefruit and grapefruit juice can change how sildenafil is metabolized in the body. Grapefruit can raise sildenafil levels in your body and lengthen the time it takes for sildenafil to work.

Changes in heart rate are minimal after taking sildenafil. Researchers noted minor increases in heart rate when younger men took sildenafil after exercise and slighter larger increases in heart rate when older men took sildenafil.

Sildenafil, especially when taken with alcohol, can lower blood pressure. Men who experience this side effect will notice an increase in heart rate along with lightheadedness and dizziness.

Men may also experience palpitations or the sensation that the heart is beating harder or faster. Drinking an extra glass of water may help.

Report any concerning side effects to your healthcare provider.

Sildenafil should not be used with any other medication used to treat ED. Tell your healthcare provider about all medical problems and medications you are taking. There are many drug interactions with sildenafil.

Contraindications for prescribing or using Sildenafil include:

  • Bleeding disorders
  • Eye or vision problems
  • Peyronie’s disease
  • History of priapism
  • Heart disease
  • Stomach ulcers
  • Kidney disease
  • Liver disease
  • Stroke
  • An allergic reaction to sildenafil or any of its components
  • Taking St. John’s wort

How to Get Started

Most of our patients know that what they need is just a few clicks away.
Enroll Online
Choose a treatment plan, and fill out the medical forms to get started.
Consult with a Doctor
One of our doctors will contact you to talk about your health goals.
Receive Your Items
The pharmacy will ship your prescribed items directly to you.
See Results
Track your results and watch your health and overall wellness improve.

Invigor's Commitment to Quality Medication

Our partner compounding pharmacies work with a registered and certified third-party lab to run quality control checks for every lot of compounded medications prescribed and delivered to our patients. These labs follow guidelines to ensure compounded medication safety and quality.
This test detects endotoxins (remnants of bacterial cell walls that can cause serious health problems) in pharmaceutical products. It helps ensure that medications are not contaminated by bacteria. Endotoxin limits are set based on how the medication is administered.
pH Test
This test measures the percent hydrogen (pH) or acidity or alkalinity of a product. The pH can affect the medication’s stability, solubility, and potency. To ensure the validity of the endotoxin test, the pH must be kept in a specified range.
Sterility Test
This test confirms that all sterile compounded medications are free from microbial contamination, including bacteria and fungi. Sterility testing reduces the risk of infections from taking medications.
Potency Test
This test measures the strength or the concentration of an active pharmaceutical ingredient (API) over time. It can be used in conjunction with stability testing to ensure that the medication will retain its potency until its beyond-use date.
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