Viagra: How a Little Blue Pill Changed the World

The doctors in the clinic conducted various eye tests and monitored the patients over time to see how their symptoms developed.

Age Range	Percentage of Users Using Blue Sildenafil	Common Usage Scenario
18-30 years	20%	Recreational or performance enhancement
31-50 years	50%	Erectile dysfunction treatment
51+ years	30%	Ongoing medical management

Fortunately, in all 17 patients the symptoms had cleared up by 21 days later, but this was doubtless a difficult experience for the men involved.

4. Avoid Specific Medications

The side effects left me with low testosterone and my testicles shrank to the size of peanuts, as well as nerve dam.. age and neuropathy. I tried the oral testosterone (Jatenzo) but it was very hard to find and expensive so my insurance company had my Doctor put me on Xyosted 75mg and had me get a penis pump (I had to talk to a pretty nurse about this, I don't have to tell you how it made me feel). After going through all that and using the pump as instructed, I am still not able to get hard enough for penetration. I'm not sure if it's the other meds I'm on or not, but I am not back to my before cancer self.

Follow safe, recommended doses

I wouldn't wish this on my worst enemy, it is emasculating having to go through all this and then have it really not work. Gavin 45-54 Male On medication for 1 to less than 2 years Patient Stress does play a role sexualy and effects the outcome of using Sildenafil. I say this as my experience is like this...when calm I only need like half of 50mg and it works and then other times I need 50mg and it works too. It makes me have full erection with sometimes like little bit of "hot feeling" by my ears and very slight headache. When I take it, it's like it stays sometime in my system as I could get another erection the next day also. “Many men use non-prescription performance enhancing drugs to help with sexual anxiety and erectile dysfunction,” said Karaarslan. “For the vast majority of men, any side-effects will be temporary and mild.

Product	Dosage	Quantity + Bonus	Price
Kamagra	100mg	84 + 6 Pills	264.44€ 251.85€	Buy
Viagra Generic	25mg	270 + 8 Pills	184.26€ 175.49€	Buy
Viagra Generic	50mg	360 + 10 Pills	225.33€ 214.60€	Buy
Viagra Generic	150mg	60 + 4 Pills	111.25€ 105.95€	Buy
Viagra Generic	200mg	90 + 6 Pills	170.79€ 162.66€	Buy
Viagra Generic	50mg	10 Pills	26.87€ 25.59€	Buy
Viagra Generic	100mg	120 + 6 Pills	149.50€ 142.38€	Buy
Viagra Generic	100mg	20 Pills	45.58€ 43.41€	Buy
Kamagra Oral Jelly	100mg	63 + 7 Sachets	224.18€ 213.50€	Buy
Viagra Generic	50mg	30 + 4 Pills	54.26€ 51.68€	Buy
Kamagra	100mg	120 + 6 Pills	330.74€ 314.99€	Buy
Viagra Generic	100mg	90 + 6 Pills	129.02€ 122.88€	Buy
Kamagra	100mg	12 Pills	55.64€ 52.99€	Buy
Viagra Generic	25mg	20 Pills	37.74€ 35.94€	Buy

However, I wanted to highlight that persistent eye and vision problems may be encountered for a small number of users.” So, why were these men susceptible to such long-lived side-effects?

Interactions between Sildenafil (Viagra) and other drugs

I used the entire bottle (never more than one a day, per warning on the label). Only share your first-hand experience as a consumer or a caregiver. Describe your experience in the Comments area including the benefits, side effects, and how it has worked for you. Do not provide personal information like email addresses or telephone numbers. Fill in the optional information to help other users benefit from your review.

Viagra and foods

All content on this page has been medically reviewed by: Hassan Thwaini, Clinical Pharmacist and Copywriter, Master of Pharmacy (MPharm) on 30 March, 2026. Sildenafil is an effective treatment for erectile dysfunction. It contains the same active ingredient as branded alternatives. Sildenafil works by encouraging more blood to flow to the penis, ensuring a strong erection when you need one. It’s effective for 82% of men.1 Find the clinically proven ED treatment that suits you best. It may be possible that a small subsection of the population does not break sildenafil down and eliminate it from the body efficiently, leading to very high concentrations in the blood compared with most users. These men also took the highest recommended dose of sildenafil on their first time taking the drug.

• The cost-effectiveness of generic sildenafil has increased its accessibility.
• It can cause flushing due to vasodilation, which is usually harmless.
• Taking it more than once a day is not recommended due to half-life.
• The medication is excreted primarily in the feces and to a lesser extent in urine.
• It is important to distinguish between sildenafil and other PDE5 inhibitors.
• The blue color helps patients and pharmacists identify the medication quickly.
• A doctor may recommend a trial dose to assess tolerance and response.

Starting with a lower dose may have meant less severe side-effects. In addition, taking the drug under medical supervision would likely have meant that the men would not have used such a high dose on their first time.

Learn more

No names, no logos, no delivery fee. 4.6* from over 33,000 people like you. BSc (Hons) MBBS MRCGP AFHEA MA (Hons) AFMCP “Efficacy and Safety of Sildenafil Citrate for Treatment of Erectile Dysfunction in a Population With Associated Organic Risk Factors.” Journal of Andrology (2013). “Efficacy and Safety of Sildenafil Citrate for Treatment of Erectile Dysfunction in a Population With Associated Organic Risk Factors.” sildenafil citrate sublingual tablets 100mg Journal of Andrology (2013). Answer a few simple questions to get the treatment you need.

What are the adverse effects of Sildenafil?

Seeing blue after the little blue pill: visual disturbances in sildenafil users Study reports persistent visual disturbances in men taking the highest recommended dose of sildenafil, suggesting that first-time users should use a lower dose. Sildenafil is commonly used to treat erectile dysfunction and is generally regarded as safe with limited side effects. However, a recent study in Frontiers in Neurology has highlighted the risk of persistent visual side-effects, such as light sensitivity and color vision impairment, in men who have taken the highest recommended dose of sildenafil. While these effects appear to be rare, the research suggests that first-time sildenafil users should start with a lower dose before increasing it, if necessary. Ocular side effects of sildenafil that persist beyond 24 hours► Read original article► Download original article (pdf) Erectile dysfunction can have significant psychological consequences for men who are affected by it, and it can make fulfilling sexual relationships more difficult to achieve. So, if you are struggling with erectile dysfunction, should you be worried about trying sildenafil?

Helping Veterans stay well and well-informed

Cüneyt Karaarslan of the Dünyagöz Adana hospital in Turkey, noticed a pattern in 17 male patients who attended the hospital. In the new study, Karaarslan reports that the patients suffered numerous visual disturbances, including abnormally dilated pupils, blurred vision, light sensitivity, and color vision disturbances, which included intensely blue colored vision with red/green color blindness. Related: Sex, drugs and estradiol: why cannabis affects women differently All 17 patients had taken sildenafil for the first time, and all took the highest recommended dose of 100 mg. None of the men had been prescribed the medication. The visual side-effects began once the drug took effect, and were still present when the men arrived at the clinic 24-48 hours later. Such persistent side-effects appear to be very rare.

Is counterfeit Viagra a worry?

34 years old 180lbs 66inch took 1 50mg pill because I'm on quite a bit of medication and 45 min later bam rock hard like when I was 18 .. I felt in control and felt like I could ejaculated anytime but easier to just enjoy the intimacy for a hour or 2 :) can't believe it worked .. heavy smoker too Fred 75 or over Male On medication for less than 1 month Patient I used Vasafil Tab 50mg did absolutely nothing waste of time and money I don’t recommend this product. Granddady 75 or over Male On medication for 5 to less than 10 years Patient 76 year old male and married to same sexy lady for 54 years. We enjoy sex and I've been on Sildenafi for 5 years.

What does Viagra do for ED?

It's always been a blue pill, however, my last prescription was a white oblong pill. It doesn't seem to be as effective. Bubba Buck 65-74 Male On medication for 6 months to less than 1 year Patient I am a colon cancer survivor, I thought I had prostate problems because it was very hard to urinate, and I was told my prostate was swollen. Turns out I had a large tumor in my colon, very close to my prostate, that was pressing on my urethra and making it very hard to urinate. I had radiation and chemotherapy (that very nearly killed me) and that killed the tumor and it went away! However, it is always best practice to consult your physician first, it may be best not to start at the highest dose, and in case you are particularly sensitive, consider first using the drug under medical supervision. “Although these drugs, when used under the control of physicians and at the recommended doses, provide very important sexual and mental support, uncontrolled and inappropriate doses should not be used or repeated,” said Karaarslan. Original article: Ocular side effects of sildenafil that persist beyond 24 hours Generic for Viagra ® contains Sildenafil, a doctor-trusted ingredient that is effective for treating ED, which means that it is just as effective for the treatment of erectile dysfunction as the original ED medication. Generic Viagra® is a PDE5 (phosphodiesterase type 5) inhibitor, which works by blocking the PDE5 enzyme, which in turn temporarily relaxes smooth muscle and improves blood flow to the penis during sexual stimulation.

Drug Class	Specific Drugs	Effect	Recommendation
Nitrates	Nitroglycerin	Severe hypotension	Do not take together
Alpha-blockers	Doxazosin, Tamsulosin	Increased hypotensive effect	Use with caution or avoid
CYP3A4 inhibitors	Ketoconazole, Ritonavir	Increased sildenafil levels	Dose adjustment needed
Antihypertensives	Lisinopril, Amlodipine	Enhanced blood pressure lowering	Monitor blood pressure

While Viagra® is easily recognizable as the “little blue pill,” the generic for Viagra® comes in many different colors and shapes.

• Research on blue sildenafil continues to evolve, focusing on safety and efficacy.
• Regulatory authorities, like the FDA, approve sildenafil for ED under strict guidelines.
• Online markets sell various brands of blue sildenafil, with variable quality.
• Always verify the source to avoid counterfeit or adulterated products.
• Use of blue sildenafil is generally safe when prescribed and used correctly.
• Patients should report any adverse effects to their healthcare provider immediately.
• Blue sildenafil is sometimes used in clinical studies for other medical conditions.
• The drug's patent expired, leading to generic versions being widely available.
• Proper medical assessment helps determine if sildenafil is suitable for a patient.
• Awareness campaigns promote safe use and inform about potential risks.

Authentic pills may be white or blue, round or diamond, etc.

• Research indicates that blue sildenafil may improve quality of life for ED sufferers.
• Side effects are usually mild but can sometimes be severe, requiring medical attention.
• The pill's blue color is iconic and recognized worldwide as Viagra-like medication.
• Blue sildenafil can be part of a broader sexual health regimen under medical advice.
• Some users report enhanced confidence and reduced performance anxiety.
• Ensuring the correct dosage is vital to avoid adverse reactions.
• Sildenafil can sometimes cause changes in hearing or ringing in the ears.
• There are ongoing debates about the long-term effects of sildenafil use.
• Lifestyle factors like exercise and diet can influence sildenafil's effectiveness.
• Educational efforts emphasize responsible use to minimize health risks.

The cost of a generic for Viagra® tablet varies based on the strength of the dose of sildenafil it contains, but generally costs anywhere from about $4 to $10 per dose, compared to $50 to $70 per dose for brand-name Viagra®.

Brand Name	Price per Pack	Dosage Strength	Quantity	Country
BlueStar	$15	100 mg	10 tablets	USA
Sildenafil Blue	$12	100 mg	10 tablets	UK
MaxBlue	$20	100 mg	20 tablets	Canada

Through Hims, generic for Viagra® costs 95% less than branded Viagra®.

Sildenafil (Viagra) contraindications

Sildenafil became available in 1998 as a treatment for erectile dysfunction. It soon became the fastest selling drug in history, demonstrating the phenomenal demand for treatments that enhance sexual performance. Originally developed as a treatment for high blood pressure, the drug dilates blood vessels and relaxes smooth muscle in the penis, making it easier to achieve and maintain an erection. The effects of the drug normally last 3–5 hours and although side-effects such as headache and blurred vision occasionally occur, they usually disappear relatively quickly. However, Dr. Generic for Viagra ® contains Sildenafil, a doctor-trusted ingredient that is effective for treating ED.

Why trust our experts?

I like the fact that i.. t works with touch and not with a surprise out of the blue in public. I normally chew it and take water with it. Maybe it absorbs faster then as I am able to perform sexualy with 30 minutes or so. 65-74 Male On medication for less than 1 month Patient Don't have to worry about an erection lasting over 4 hours.

Combination therapy

Been 4 hours since taking it and could only get a semi hard erection, Just like prior to using it. Wife even tried in vain to help stimulate me to no avail. Did experience some side effects though,:Headache, wooziness, nausea, Sounds great??? a senior 75 or over Male On medication for 1 to 6 months Patient I took this as my ED had progressed from around age 72. I got a prescription for this very expensive drug at a still expensive discount due to my Humana insurance.