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Understanding Sildenafil
What is Sildenafil?
Sildenafil, the generic counterpart of Viagra, is an oral medication prescribed for the treatment of male sexual dysfunction, commonly referred to as impotence or erectile dysfunction (ED). This medication is typically administered before engaging in sexual activity, and the usage is restricted to no more than once within a 24-hour period. In addition to its use in treating ED, sildenafil is also formulated in various other product forms and is effective in managing pulmonary arterial hypertension (PAH), a condition characterized by high blood pressure in the lung arteries in both men and women. It is crucial to note that these distinct formulations should not be combined or used interchangeably.
How does sildenafil work?
Sildenafil functions as a phosphodiesterase-5 enzyme (PDE-5) inhibitor. When paired with sexual stimulation, sildenafil enhances blood flow to the penis, facilitating the achievement and maintenance of an erection. It's important to highlight that sildenafil is ineffective in the absence of sexual arousal and stimulation.
How to take sildenafil for best results
For maximum efficacy, sildenafil should ideally be ingested approximately one hour before planned sexual activity; however, it can be taken between 30 minutes to four hours in advance. It is designed for on-demand use, with a recommended limit of one dose every 24 hours. Sildenafil may be consumed with or without food, providing flexibility in its administration.
How long does sildenafil take to work?
Sildenafil's effectiveness in addressing erectile dysfunction is contingent upon the presence of sexual stimulation. Typically, the onset of action occurs within approximately 60 minutes after ingestion.
How long does sildenafil last?
The duration of an erection facilitated by sildenafil can span from two to four hours. It is imperative that patients seek immediate medical attention if an erection persists beyond four hours, as this may indicate a serious medical condition.
What are the side effects of sildenafil?
As with all prescription drugs, sildenafil may induce side effects, some of which can be serious. Common side effects associated with sildenafil include headaches, facial flushing (a warm and reddened appearance in various areas like the face, neck, ears, or chest), nasal congestion, and digestive upset. These effects are generally transient and are expected to subside as the medication's effects diminish. Should these side effects become bothersome or fail to resolve, contacting your healthcare provider is advisable.
Immediate medical help is crucial if you experience severe side effects such as sudden hearing loss, visual disturbances (including altered color perception, blurred vision, or increased sensitivity to light), a dramatic drop in blood pressure, or an erection lasting in excess of four hours. Although rare, serious eye problems have been reported and can potentially result in a change in eyesight, including temporary or permanent loss of vision. Very rarely, sildenafil usage may be linked to abnormal heart rhythms, heart attacks, or strokes, particularly in individuals with pre-existing heart issues. Therefore, it is essential to discuss your complete medical history with your Walgreens healthcare provider to confirm that sildenafil is a safe option for you.
How to get sildenafil for erectile dysfunction through Walgreen’s Virtual Care
In your scheduled Walgreens Virtual Healthcare consultation, your healthcare provider will evaluate your symptoms and explore potential treatment options. They will ascertain if prescribing sildenafil tablets for erectile dysfunction is suitable for your situation.
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Frequently Asked Questions
- Is sildenafil available over the counter?
No, sildenafil cannot be obtained without a prescription. It is classified as a prescription medication that requires a healthcare provider’s approval.
- Do you need a prescription for sildenafil?
Yes, a valid prescription is necessary to obtain sildenafil. It must not be accessed over the counter.
- What drugs interact with sildenafil?
Drug interactions can significantly influence how medications operate and may amplify unwanted side effects. Sildenafil exhibits interactions with various medications as well as over-the-counter products, including vitamins and supplements. It is essential to discuss all medications and over-the-counter products you are currently using with your Walgreens healthcare provider and pharmacist prior to starting sildenafil.
- What are the differences between sildenafil and Viagra?
Sildenafil is the generic form of Viagra. Both medications contain identical active ingredients and serve the same purpose of treating erectile dysfunction.
- Will insurance cover a sildenafil prescription?
Some insurance plans may cover the cost of sildenafil prescribed for erectile dysfunction. It is advisable to verify with your insurance provider to determine if sildenafil falls under your coverage.
- Does Walgreens offer the brand Viagra?
Yes, Walgreens Virtual Care provides both brand name Viagra and generic sildenafil for the management of erectile dysfunction. Consult with your healthcare provider to assess which option is appropriate for you.
- Can sildenafil be taken with food or alcohol?
Sildenafil can be administered with or without meals. However, consumption of alcohol in conjunction with sildenafil may elevate the risk of experiencing low blood pressure. Therefore, it is advisable to limit or avoid alcohol intake while using sildenafil.
- Sildenafil vs. tadalafil: What’s the difference?
Sildenafil (the generic version of Viagra) and tadalafil (the generic version of Cialis) are both classified as phosphodiesterase-5 enzyme (PDE-5) inhibitors that operate similarly in the treatment of erectile dysfunction. Both options can be taken on an as-needed basis and should be ingested at least 30 minutes before engaging in sexual activities, not exceeding one dose every 24 hours. Tadalafil is noted for its extended duration of action compared to sildenafil. Consequently, there are lower strength tadalafil formulations designed for daily ingestion, independent of sexual activity timing. It is critical to note that sildenafil and tadalafil should not be taken concurrently. Your healthcare provider can guide you in determining which medication is most suitable for your needs.
- Sildenafil vs. Vardenafil: What’s the difference?
Sildenafil (the generic form of Viagra) and vardenafil (the generic form of Levitra) are both PDE-5 inhibitors utilized in treating erectile dysfunction. While vardenafil should ideally be taken one hour before sexual activity, sildenafil offers more flexibility, as it can be taken as early as 30 minutes and up to four hours before engaging in sexual activity. The duration of action is generally similar for both medications, with usage recommended on an as-needed basis, but not more than once in a 24-hour period. Sildenafil and vardenafil are available in oral tablet form for erectile dysfunction treatment and should not be taken simultaneously. A discussion with your healthcare provider will help determine which medication is the best fit for you.
References
1. Viagra (sildenafil citrate) tablets, for oral use. Package insert. Pfizer Labs. 2014.
2. Sildenafil: MedlinePlus drug information. MedlinePlus. Accessed February 19, 2025.
3. Cialis (tadalafil) tablets, for oral use. Package insert. Eli Lilly and Company. 2011.
4. Levitra (vardenafil hydrochloride) tablets, for oral use. Package insert. Bayer HealthCare Pharmaceuticals Inc. 2014
Disclaimers
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