Your ED is Caused by an Underlying Health Condition Common physical causes of erectile dysfunction include heart disease, diabetes, nerve damage and high blood pressure. Hormonal issues, such as low testosterone, can also affect your level of sexual desire, which may stop you from getting an erection even with Viagra.
Viagra cannot replace testosterone levels, so when those levels drop too low, Viagra cannot stimulate enough blood flow into the penis to make up for the drop in hormone levels. That results in Viagra no longer working as well as it should or failing to work at all.
Get the timing right. Ideally, Viagra should be taken 30–60 minutes before you plan to have sex for best results. It needs time to work, so taking Viagra too close to the time that you need it may make it more difficult to get an erection strong enough for satisfying sex. Taking Viagra too early may do the same.
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.
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.
Effectiveness of all PDE5 inhibitors is similar; although reported effectiveness of Viagra, at 84% is slightly higher than that of Cialis at 81%. However, more men prefer Cialis because of its longer duration of effect.
Viagra works best for men whose ED is caused by a physical problem which impedes the flow of blood to their penis, like high cholesterol, high blood pressure or diabetes, but if your ED is caused by a different physical issue, such as nerve damage or low testosterone then Viagra most likely won't help.
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.
Viagra does not stimulate you sexually, it can only help you get an erection once you're already aroused. Because Viagra only helps you to get an erection by improving blood flow to the penis, it doesn't force you to get an erection, so it won't work unless you're sexually stimulated.
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.
Tadalafil (Cialis)
For ED, people take it as an oral tablet. Some advantages of tadalafil include the following: Longest lasting: It is the longest lasting PDE5 drug for ED, typically lasting up to 36 hours, though some reports suggest it can last up to 72 hours.
Pfizer, the company that manufactures this drug, has confirmed that the typical Viagra user is on average 53 years old. The company does not keep records of users younger than 33 years. The drug should not be used in young men who do not have erection problems.
Viagra is designed to improve your physical performance during sex — that is, your ability to get and maintain an erection. However, it isn't associated with any significant increase in your level of sexual interest, sexual arousal or your sex drive in general.
Viagra works by improving blood flow to your penis. Because these two substances have very different effects on blood flow, the Viagra-alcohol mix may actually cancel out the positive sexual performance effects of Viagra and make it harder to get and maintain an erection.
The concentration of Viagra in the blood peaks around 30–120 minutes after taking the drug — usually around the 60 minute mark.
It is rare for people to develop tolerance to Viagra; for the most part, the drug works for the long haul. There are a number of reasons why Viagra may no longer work. Most commonly it may be that it is bad luck – you may not have taken it properly or did not give it enough time to work.
Using them incorrectly — having the wrong dosage or not following instructions — can cause Cialis not to work. Cialis might also fail if your ED is related to psychological issues — performance anxiety, intimacy issues, low self-confidence and depression can all affect your erections.
20mg is the maximum dose of Cialis and 100mg is the maximum dose of Viagra, meaning your healthcare provider may suggest that you use 100mg of Viagra if you're prescribed Cialis and want to change medications. Ultimately, Cialis and Viagra are different medications that treat the same condition.
Cialis is used for the treatment of erectile dysfunction (ED). It increases blood flow to the penis following sexual stimulation and allows men to keep an erection hard enough for sex. Cialis is also used to treat the signs and symptoms of benign prostatic hyperplasia (BPH).
Medicines for erectile dysfunction
The first tablet available for erectile dysfunction, sildenafil (brand name Viagra), has been largely responsible for helping to bring the topic of erectile dysfunction out into the open. Similar medications — tadalafil (Cialis) and vardenafil ( Levitra) — are also available.
Two natural erectile dysfunction treatments that have shown promise are red ginseng and pomegranate juice. “Ginseng is thought to increase nitric oxide production, leading to improved blood flow," he says. "Pomegranate juice is a potent antioxidant and can help prevent atherosclerosis."