Weighing the benefits and risks of Levitra versus Sildenafil requires some basic knowledge of each. A comparison can be made by examining how they can be used, the time it takes for them to work, the length of time they work, the restrictions on how they can be taken, the contraindications to their use, and their side effects. Viagra, which is Sildenafil, has been approved “for the treatment of erectile dysfunction (ED), including ED patients with diabetes mellitus or following radical prostatectomy.” (PDR) Viagra is available in doses of 25 mg, 50 mg, and 100 mg. However, generic Sildenafil comes only in one size, 20 mg. The FDA approved Sildenafil in the low 20 mg dose for pulmonary hypertension, but since it is the same medication as in Viagra, and only a fraction of the cost, many patients work with their healthcare providers to use sildenafil “off-label” for erectile dysfunction (ED). Many find the cost of the brand sildenafil (Viagra) so high they cannot start the medication nor continue its use. Most physicians who prescribe Viagra (Sildenafil) start patients on the 50 mg dose and either raise or lower the dose as warranted. The primary indication of sildenafil is treatment of erectile dysfunction (inability to sustain a satisfactory erection to complete intercourse). Its use is now one of the standard treatments for erectile dysfunction, including for men with diabetes mellitus. Rare but serious adverse effects found through postmarketing surveillance include prolonged erections, severe low blood pressure, myocardial infarction (heart attack), ventricular arrhythmias, stroke, increased intraocular pressure, and sudden hearing loss. Care should be exercised by people who are also taking protease inhibitors for the treatment of HIV infection. Protease inhibitors inhibit the metabolism of sildenafil, effectively multiplying the plasma levels of sildenafil, increasing the incidence and severity of side effects. Those using protease inhibitors are recommended to limit their use of sildenafil to no more than one 25 mg dose every 48 hours. blocker (typically prescribed for hypertension or for urologic conditions, such as benign prostatic hypertrophy) at the same time may lead to low blood pressure, but this effect does not occur if they are taken at least 4 hours apart.
Severe headaches, nausea, and light-headedness brought about by fluctuations in blood pressure) resulted in poor patient tolerance. Accordingly, when Sildenafil (Viagra) was shown to facilitate penile erection through increasing penile blood flow, without eliciting bothersome side effects, we decided to investigate whether this drug could replace nitroglycerine for the improvement of endometrial development. Last couple times I took it it dindnt work very well. For a man like me who didnt physicaly need it, could it damage my penis and make me impotent? I have about twenty more questions, but I don't want be a pig about this. I guess your body developed tolerance over viagra because of using it frequently. My question is, does the body build up an immunity to these drugs? Does the body produce more of this hormone as you get older? I have tried Cialis too, with a similar story...a year ago, used with success, recently not so much. I know that Viagra works by masking a hormone that makes erections go away. During the last few months, I have bumped it up to 50 mg, and in the last few weeks, even 50 mg has little effect. It is safe to take a break and let your body restore the natural balance of hormones. You can try using it again after your break and see if it works like before. But I increased my dosage to 40 mg because I felt the medication was working as well as before and that my body was building upa tolerance( the erections were not as good as before). The last two times I have taken cialis there has been an adverse affect i could not achieve a full erection.
Can tolerance result in the long term use of viagra and similar agents? Asked by cy111 Updated 31 March 2015 Topics cialis, viagra, erectile. Severe headaches, nausea, and light-headedness brought about by fluctuations in blood pressure resulted in poor patient tolerance. Accordingly, when Sildenafil.