The effects of Viagra will last for four to six hours. Viagra was developed and originally marketed by the pharmaceutical company Pfizer, and until Pfizer was the only company allowed to sell it.
Sildenafil contains exactly the same active ingredient as Viagra sildenafil citrate , and works in the same way. However, because it is the generic version of the medicine, rather than the brand, Sildenafil is considerably cheaper.
Levitra Vardenafil will last for a similar amount of time as Viagra four to six hours. The main difference to Viagra is that Levitra tends to be less affected by food or alcohol so can be taken with meals. There is also some evidence that Levitra is more effective in diabetics than other erectile dysfunction medicines. The effects of Cialis tadalafil last much longer than those for Viagra or Levitra up to 36 hours so many men prefer it as involves less planning.
The downside is that if you do experience side effects these can last for longer too. Like Levitra, Cialis is not affected much by food, so can be taken after a meal. Alcohol, however, may reduce its effects.
Different erectile dysfunction medicines suit different people, but it is difficult to tell which one will be best for you until you have tried them all.
While a particular erectile dysfunction medicine may not work for you first time round, we recommend taking it at least eight times before giving up and trying another. This is because it can often take this long to determine whether or not a medicine is right for you. We also often suggest that men initially try a combination of three erectile dysfunction medicines to see which is best for them, and we offer a starter pack of Viagra, Cialis and another ED medicine called Spedra for those suitable.
Spedra is the newest erectile dysfunction medicine on the market, and takes the shortest amount of time to work — just 15 minutes in some men. You can order the above combination or the medicines individually - safely through our ED clinic. However, as above, it is possible that one medicine will be more or less effective than the others, and therefore it is best to initially try out all three to see which is best. All three have similar side effects — headaches, stuffy nose, facial flushing, stomach ache or back pain being the most common.
Some men who have had bad side effects with, say, Viagra will have fewer with Levitra or Cialis, but similarly some find the prolonged side effects of Cialis troubling.
Viagra, Cialis and Levitra should not be taken by men who take medicines or recreational drugs containing nitrates. Sildenafil is used to treat erection problems. Find out how to take it safely and possible side effects.
Sildenafil is also called Avigra, Silvasta and Viagra. Sildenafil is used for men with erection problems erectile dysfunction.
It increases blood flow to the penis, to help achieve an erection. To work well, sildenafil needs to be taken 30 minutes or more before sex. This gives it enough time to get into the penis to work. Combined use of multiple erectile dysfunction medicines is not recommended. In patients using Avigra along with Ritonavir, it can result in decreased blood pressure, loss of consciousness, and prolonged erection.
For such patients, lower dosage of Avigra is recommended. In patients using low blood pressure medicines and Avigra together, the blood pressure can drop significantly. This can result in dizziness , lightheadedness, and fainting.
Such patients should first establish a stable regimen for their low blood pressure medicines and then start at a lower dose for Avigra. Some patients may have a prolonged erection lasting more than 4 hours, or a painful erection lasting more than 6 hours. In this happens, you should consult with your doctor immediately. Patients with any prior history of heart diseases may have a higher risk of heart attack.
Such patients should use this medicine with caution. Usage of this medicine may cause a sudden decrease or loss of hearing , ringing in ears tinnitus , and dizziness. If you experience any of these symptoms, you should should stop the use of the medicine.
Patients with NAION non-arteritic anterior ischemic optic neuropathy risk factors may face a sudden loss of vision in one or both eyes. This medicine should be used with caution and if a loss of vision occurs, the medicine should be discontinued. Interactions with Avigra When two or more medicines are taken together, it can change how the medicines work and increase the risk of side-effects. In medical terms, this is called as a Drug Interaction.
This page does not contain all the possible interactions of Avigra Tablet. Share a list of all medicines that you use with your doctor and pharmacist. Do not start, stop, or change the dose of any medicines without the approval of your doctor. Calcium Channel Blockers Avigra Tablet interacts with amlodipine , which is a medicine used to lower the blood pressure. Taking these two drugs together can result in an abnormal blood pressure. As a result, Amlodipine and Avigra should be used together with caution.
Alpha-Blockers There may be an interaction of Avigra with alpha-blockers , which are medicines used to lower the blood pressure and treat prostate enlargement in men. Using Avigra with alpha-blockers can result in reduced blood pressure. In such cases, the patient should be given the lowest dose of Avigra, which is 25 mg. Nitrates Avigra Tablet may interact with organic nitrates or nitrites , which are used to treat chest pain and heart disease. Using Avigra along with nitrates can result in harmful effects on the heart.
Hence, organic nitrates or nitrites should not be used in combination with this medicine. When these two drugs are given together, CYP3A4 inhibitors cause the levels of Avigra in the blood to increase several folds. Interactions of Avigra by Severity Severe The following medicines are usually not to be taken together without consulting with your doctor or pharmacist.
Serious The following medicines may interact when taken together and can cause harmful effects in the body. Please consult with your doctor or pharmacist before taking these medicines together. Moderate The following medicines may interact when taken together and can increase your risk of harmful effects. When should Avigra be not used? Allergic Reactions This medicine should not be used in patients who are allergic to it. These patients may have the following symptoms if they use this medicine:.
Nitrates, Used to Treat Angina This medicine should not be used by patients who are taking organic nitrates or organic nitrites. This medicine should not be given with nitrates in any form due to its hypotensive effects. Traveling With Medication Ensure that you carry enough doses of each of your prescription medicines to last the entire trip.
The best place to store your medicines is in the carry on baggage. However, while flying, if carrying liquid medicines, make sure you do not go over the limits imposed for carry-on liquids. While traveling overseas, make sure that you can carry each of your prescription medicines legally to your destination country. One way to ensure this is by checking with your destination country's embassy or website. Make sure that you carry each of your medicines in their original packaging, which should typically include your name and address, and the details of the prescribing doctor.
If your travel involves crossing time zones, and you are required to take your medicine as per a fixed schedule, make sure that you adjust for the change in time.
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