陽痿口服藥物威而鋼多久生效？可以常吃嗎？能變持久嗎？

威而鋼（Sildenafil）是一種治療陽痿的口服藥物，可以幫助男性恢復勃起功能。威而鋼屬於磷酸二酯酶-5抑製劑（PDE5抑製劑），它可以增加血流量，促進陰莖海綿體內血管的擴張，從而使血液更容易流入陰莖，使男性可以較容易地達到和維持勃起。

威而鋼需要在性刺激下才能發揮作用，並且需要在性行為前約30分鐘至1小時服用，通常可以持續4-6小時。然而，威而鋼僅是短期治療陽痿的方法，如果陽痿的原因是基礎疾病或心理問題，應該找到相應的長期治療方法來解決問題。在使用威而鋼之前，應該向醫生進行詳細的醫學檢查和診斷，以確定是否合適使用該藥物。

威而鋼多久生效？

威而鋼（Sildenafil）一般需要在口服後30-60分鐘內生效，但這也取決於個體的代謝率和食物的影響。一般建議在餐前服用威而鋼，因為食物會降低其吸收率和效果。威而鋼的效果持續時間通常為4-6小時，但也可能有個體差異。需要註意的是，威而鋼需要在性刺激下才能發揮作用，而單純口服威而鋼並不能導致勃起。

威而鋼常吃會怎樣？

長期大量使用威而鋼可能會產生一些不良影響，如下：

1.耐藥性增加：長期大量使用威而鋼可能會導致耐藥性增加，使藥物在治療方面失去效力。

2.食道括約肌異常：長期使用威而鋼可能會導致食道括約肌異常，從而影響進食和咽喉功能。

3.視力問題：威而鋼可能會對視力產生負面影響，包括顏色識別的困難、眼壓升高和視網膜血管病變等。

4.心血管問題：威而鋼對血管產生擴張作用，對於有心血管問題的患者，可能會產生不良反應，包括心悸、頭暈和低血壓等。

威而鋼能持久嗎？

威而鋼可以幫助男性在性行為時維持較長時間的勃起，但威而鋼本身不是一種持久劑。威而鋼的作用時間約為4-6小時，具體效果會因人而異。威而鋼並不會影響性高潮的發生，而只是幫助男性在性行為過程中維持勃起。因此，如果需要在一段較長時間內維持勃起，可能需要考慮其他較長效的治療方法。

犀利士（Tadalafil）是一種治療ED的長效藥物，其作用時間約為36小時，相較於威而鋼的4-6小時作用時間更長。犀利士的作用機製與威而鋼相似，可以放鬆海綿體平滑肌，增加血液流入陰莖，進而引起勃起。犀利士需要在性行為前約30分鐘至1小時內口服，並且不受食物的影響。與威而鋼相比，犀利士的持續時間更長，可以提供更長時間的性愛體驗，同時減少使用頻率和劑量，減少副作用和風險。然而，犀利士也有可能引起一些副作用，例如頭痛、胃部不適和面部潮紅等，需要在使用前仔細閱讀使用說明並遵從醫師的建議。

威而鋼多久生效？常吃會怎樣？能持久嗎？

 

Viagra (Sildenafil) is an oral drug for the treatment of impotence that can help men restore erectile function. Viagra is a phosphodiesterase-5 inhibitor (PDE5 inhibitor), which can increase blood flow and promote the expansion of blood vessels in the cavernous body of the penis, so that blood can flow into the penis more easily, so that men can achieve and maintain an erection more easily .

Viagra needs to be sexually stimulated to work, and it needs to be taken about 30 minutes to 1 hour before sexual activity, and it can usually last for 4-6 hours. However, Viagra is only a short-term treatment for impotence. If the cause of impotence is an underlying disease or psychological problem, a corresponding long-term treatment should be found to solve the problem. Before using Viagra, a detailed medical examination and diagnosis should be obtained from a doctor to determine whether the drug is suitable for use.

How long does Viagra take effect?

Viagra (Sildenafil) generally takes effect within 30-60 minutes after oral administration, but this also depends on the individual’s metabolic rate and the influence of food. It is generally recommended to take Viagra before meals, as food reduces its absorption rate and effectiveness. The duration of the effect of Viagra is usually 4-6 hours, but there may be individual differences. It should be noted that Viagra needs to be sexually stimulated to play a role, and oral Viagra alone cannot cause an erection.

What happens if Viagra is eaten regularly?

Long-term use of Viagra in large quantities may have some adverse effects, as follows:

1. Increased drug resistance: long-term large-scale use of Viagra may lead to increased drug resistance and make the drug lose its efficacy in treatment.

2. Abnormal esophageal sphincter: long-term use of Viagra may lead to abnormal esophageal sphincter, thereby affecting eating and throat function.

3. Vision problems: Viagra may negatively affect vision, including difficulty with color recognition, increased intraocular pressure, and retinal vascular lesions.

4. Cardiovascular problems: Viagra dilates blood vessels. For patients with cardiovascular problems, it may cause adverse reactions, including palpitations, dizziness and hypotension.

Will Viagra last?

Viagra can help men maintain longer erections during sex, but Viagra itself is not a lingering agent. The action time of Viagra is about 4-6 hours, and the specific effect will vary from person to person. Viagra does not affect the occurrence of orgasm, but only helps men maintain an erection during sex. Therefore, other longer-acting treatments may need to be considered if an erection needs to be maintained for an extended period of time.

Cialis (Tadalafil) is a long-acting drug for the treatment of ED, and its action time is about 36 hours, which is longer than Viagra’s 4-6 hours. The mechanism of action of Cialis is similar to that of Viagra, which can relax the smooth muscle of the cavernous body, increase blood flow into the penis, and cause an erection. Cialis needs to be taken by mouth about 30 minutes to 1 hour before sexual activity and is unaffected by food. Compared with Viagra, Cialis has a longer duration and can provide a longer sexual experience, while reducing the frequency and dosage of use, reducing side effects and risks. However, Cialis may also cause some side effects, such as headache, stomach upset and facial flushing, etc. It is necessary to carefully read the instructions for use and follow the doctor’s advice before use.

How long does Viagra take effect? What happens if you eat it often? Can it last?