Viagra can have severe reactions, but only if a man is allergic or he takes much more than he needs. Viagra can make a person see blue for a while, feel a little flushed, have a slight headache, create some stomach gas, nausea in some, dilate the pupils slightly and create a little nasal stuffiness.
If you go to Viagra stories.com where Viagra users express their opinions, you will find that most guys feel the benefits greatly outweigh the side effects. Some take an aspirin and use a little nasal spray to help out.
So finding the exact dosage is key to reducing side effects...some take as little as 10mg with success. ( Not to be taken with gratefruit juice or alcohol....better with water on an empty stomach.)
There are 2 small valves in the penis which by nature close off and control blood LEAVING the penis which helps create an erection. As a man gets older, these valves do not work as good, so Viagra helps these valves to work like they did originally.
A rubbing oil does not do this in spite of promising better circulation. So, it is MORE than just a circulation issue...it's control also.
Viagra allows a man to be bigger, wider and harder before he ejaculates which is great for a woman who doesn't cllmax till a little later. A man can almost pick the time he ejaculates.It makes it a tighter fit so a man who never used lube before will suddenly need it.
Viagra is , however, rather pricey at $10.00 a pill...so it's better to get the 100mg size and cut it down. Cobra is much cheaper, but doesn't produce the same results. I'd call it a "HELPER" though.

As far as any potential eye damage here is what I found. If you are healthy, you shouldn't have any problems.

As printed.....
Fears that taking the anti-impotence drug Viagra may damage nerves in the eye have been eased by a new study.
However, researchers found that the drug may cause damage to the optic nerves of people whose blood vessels are already in a poor state.

And they still cannot explain why taking the drug seems to be linked to problems in picking up subtle changes of colour.

When Viagra was introduced in 1999, the drug's manufacturers warned of a number of visual side effects, including possible nerve damage to the eyes.

But researchers at the University of California, Irvine found that nerve damage in healthy people is extremely unlikely - even when Viagra is taken in high doses.

Blood pressure

Since Viagra lowers blood pressure overall, there was persistent suspicion that the drug might reduce blood flow to the eyes, which can cause nerve damage.

But Dr Tim McCulley, assistant professor of ophthalmology at Irvine, said there was no evidence that taking the drug had any significant impact on reducing blood flow in the eyes.

Dr McCulley said: "Viagra can change blood vessel structure as well as general blood pressure, so we needed to answer the question whether the drug could change blood vessels in the eye.


Viagra is linked to difficulty discerning colour
"Our study may have had a small group of participants, but it showed very little change in blood vessels or blood flow in nearly all the patients."

The researchers carried out tests on 13 patients.

They found that high doses of Viagra by and large preserved the thickness of the eye's choroids layer, which supplies the eyeball with blood.

However, the team did find some small variations in thickness, which indicated that some people with underlying vascular diseases may indeed have changes in vision.

This should ease fears. Most doctors report it to be safe in those that qualify...a typically healthy person.
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Viagra can have severe reactions, but only if a man is allergic or he takes much more than he needs. Viagra can make a person see blue for a while, feel a little flushed, have a slight headache, create some stomach gas, nausea in some, dilate the pupils slightly and create a little nasal stuffiness. If you go to Viagra stories.com where Viagra users express their opinions, you will find that most guys feel the benefits greatly outweigh the side effects. Some take an aspirin and use a little nasal spray to help out. So finding the exact dosage is key to reducing side effects...some take as little as 10mg with success. ( Not to be taken with gratefruit juice or alcohol....better with water on an empty stomach.)
There are 2 small valves in the penis which by nature close off and control blood leaving the penis which helps create an erection. As a man gets older, these valves do not work as good so Viagra helps these valves to work like they did originally.
A rubbing oil does not do this in spite of promising better circulation. So, it is more than just a circulation issue.
Viagra allows a man to be bigger, wider and harder before he ejacuates which is great for a woman who doesn't cllmax till a little later. A man can almost pick the time he ejaculates.
Viagra is , however, rather pricey at $10.00 a pill...so it's better to get the 100mg size and cut it down.

As far as any potential eye damage, I would like to see that article.