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.
Sildenafil (Viagra), vardenafil (Levitra, Staxyn), tadalafil (Cialis) and avanafil (Stendra) are oral medications that reverse erectile dysfunction by enhancing the effects of nitric oxide, a natural chemical your body produces that relaxes muscles in the penis.
The 'as required' Tadalafil (generic Cialis) has an advantage over Sildenafil in that it lasts a lot longer – up to 36 hours (compared with 4-5 hours for Sildenafil). Some men prefer this as it allows for more spontaneity.
Sildenafil citrate (Viagra): This is the most commonly prescribed type of OTC Erection pill. It relaxes muscles in your blood vessels and increases blood flow to your penis during sex. The FDA has approved this drug for erectile dysfunction only when other treatments have failed.
Tadalafil shares a similar efficacy and safety with sildenafil and significantly improves patients' sexual confidence. Furthermore, patients and their partners prefer tadalafil to sildenafil. Hence, tadalafil may be a better choice for ED treatment.
There are several reasons Viagra and other ED drugs might not work effectively as treatments for erectile dysfunction. These include using Viagra incorrectly, taking a low dose of Viagra and using Viagra to treat ED that's caused by something other than poor blood flow.
Cialis taken as needed
But if this dose doesn't work for you, your doctor may have you take two 5 mg tablets of Cialis at once. This will increase the dose back to 10 mg. If the 10-mg dose of Cialis isn't working well enough, your doctor may increase it to 20 mg.
You should never increase your dose, double your dose, or change how you take ED medication without the advice of your healthcare provider. If Viagra isn't working the way you'd like or you're experiencing side effects, speak to your healthcare provider.
Structurally vardenafil (Levitra) is similar to sildenafil, while tadalafil (Cialis) is very different. 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.
The truth is that both medications are equally effective in treating erectile dysfunction. A meta-analysis that pooled the results of several extensive studies found that both Viagra and Cialis were equally safe and effective.
Dosage and strength for erectile dysfunction
Sildenafil tablets for erectile dysfunction come in different strengths ranging from 25mg to 100mg. The usual dose is 50mg, when you need it. Do not take it more than once a day. The dose can be increased to 100mg or decreased to 25mg depending on its effect.
Drugs such as Sildenafil and Tadalafil work by increasing blood flow to the penis. This supports in the attainment of firmer and fuller erections. The medications used to treat ED will not permanently cure the condition, but they can help you achieve and maintain an erection when needed.
Oral medications
Oral drugs, including Viagra, are frequently the first course of treatment for men with erectile dysfunction. Alternative, prescription-only PDE5 inhibitors to Viagra include: Vardenafil: Sold under the brand names Levitra and Staxyn, this drug is available in tablet and disintegrating tablet form.
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.
That's because the higher the dose of a medication, the higher the risk of side effects. Sildenafil is no exception. Some sildenafil side effects include headache, redness in the face, changes in vision, stuffy nose, muscle aches, back pain, nausea, dizziness, and rash.
Why You're Not Getting All the Way Hard. Erectile dysfunction's mechanism is quite simple, but the underlying cause could be a myriad of reasons, from poor diet and exercise habits, diabetes or heart disease, to low self-esteem, depression or anxiety.
Prescription Options for Longer Erections
There are four FDA-approved prescription medications to treat erectile dysfunction: Sildenafil (Viagra), tadalafil (Cialis), vardenafil (Levitra), and avanafil (Stendra).
Feel free to drink more caffeine
Love coffee or tea? Great! A 2005 review showed that caffeine may improve blood flow and relax the muscles that help you get and keep an erection. Try to keep it to black coffee, unsweetened tea, and caffeinated drinks without sweeteners.
People with penises have an average of 11 erections per day and three to five more each night, but everyone is different. There are numerous factors that can affect how often you get hard, like your age, hormone levels, and lifestyle.
When combined with grapefruit, this effect can cause a serious increase in blood flow around the body, especially when combined with nitrates. This is because grapefruit can increase the amount of Cialis in your body.
If you take Cialis as needed, be sure to give yourself plenty of time (since it takes up to 1 to 2 hours to kick in). Otherwise, you can't speed it up after you've taken it. If that's not working for you, you could consider taking a lower-dose tablet every day. This might be better if you prefer to be more spontaneous.