Since Viagra was first patented by Pfizer, it has been referred to as the 'blue pill'. This is because the blue diamond shape design of Viagra pills has been part of the branding for this treatment and is often used to distinguish it from other medications.
It also exerts a minor inhibitory action against PDE6, which is present exclusively in rod and cone photoreceptors. At higher doses, sildenafil causes mild and transient visual symptoms in a minority of patients (mainly blue tinge to vision, increased brightness of lights).
Sildenafil - Comes as a little blue pill, sometimes white. Sildenafil is the active ingredient of Viagra. Essentially, it is Viagra without the Viagra brand name and is thus significantly cheaper. Spedra - A pale yellow, oval pill, Spedra is the fastest acting of all ED treatments.
Although Viagra can make it easier to get and maintain an erection, it does not seem to have any effect on the way sex feels. Taking Viagra won't make you feel more stimulated during sexual activity, nor will it result in any positive or negative change in the level of sensation you feel.
When used in women, Viagra is thought to raise blood flow to the genitals so that there's more sensitivity and stimulation. Studies have shown that Viagra may provide a benefit for women having difficulty with sexual arousal — since it may help them respond better to sexual stimulation.
In women, Viagra can increase blood flow to the clitoris and the labia of the vagina which may increase lubrication and sensation. This may help some women with sexual arousal and orgasm, especially in women after menopause with vaginal dryness.
Nothing much would happen if someone without erectile dysfunction took Viagra, although they might think they feel better psychologically. But it would make a difference if you took it along with other drugs. Cocaine, marijuana, ecstasy, alcohol, nicotine, crystal meth - they all can cause erection problems.
Viagra will not make you come or prevent premature ejaculation. Viagra is primarily an erectile dysfunction medication and does not directly impact time to ejaculation.
The effects of Viagra can last 4 to 8 hours, depending on the individual person and the dose you take. In fact, some people may experience more than one erection during this time.
Viagra can cause some serious side effects. These can include an erection that will not go away (priapism), sudden vision loss in one or both eyes, and sudden hearing decrease or hearing loss. Some men have also experienced heart attack, stroke, irregular heartbeats and even death after taking Viagra.
The Unexpected Discovery of Viagra
The sildenafil compound was originally developed by Pfizer for the treatment of hypertension (high blood pressure) and angina pectoris (chest pain due to heart disease).
Viagra doesn't start working immediately after taking it, as the medication needs time to be absorbed into your blood. For most men, it takes around 30 minutes before you start to feel the effects of Viagra. 12 minutes after – One study has shown that some men got an erection just 12 minutes after taking Viagra.
Because 100mg is the highest dose available, you should never 'double up' on tablets or take more than one in 24 hours. Sildenafil 100mg is the highest safe dosage you can take – if it is ineffective, you should try another ED treatment.
When the blood vessels in your skin dilate, your skin can take on a red, flushed appearance. Some men who use Viagra notice this effect around their nose, cheeks and forehead.
Speak with your healthcare provider about a different dose
If Viagra isn't working for you, you might need a higher dose. But don't experiment on your own: Always speak with a healthcare provider about dosage changes and never take more than one dose of Viagra in any 24 hour period.
It's best to avoid consuming alcohol while taking ED medications like Viagra: Not only can alcohol counteract the medication's effects, but it can also worsen side effects, like flushing and headaches. Again, talk to your healthcare provider before drinking alcohol if you're taking medications like Viagra.
The concentration of Viagra in the blood peaks around 30–120 minutes after taking the drug — usually around the 60 minute mark. It is possible to start feeling the effects of Viagra at any time during this window.
A penile erection can normally last anywhere from a few minutes to about half an hour. On average, men have five erections a night while they're sleeping, each lasting about 25 to 35 minutes (Youn, 2017).
Vardenafil (Levitra) is almost 10 times more biochemically potent than sildenafil, therefore a lower dose is needed to facilitate the penile erection, potentially resulting in less side effects. Selectivity is the ability of the drug to attach to the specific enzyme PDE 5 found in penile tissues.
The Food and Drug Administration (FDA) have approved two drugs — flibanserin (Addyi) and bremelanotide (Vyleesi) — to address low desire or arousal in females.
Good news—more than likely, there is absolutely nothing wrong with you. Every body is different and makes different amounts of natural lubrication. Some people just don't get that wet when they're turned on, and that's completely normal and ok.