{"id":1906,"date":"2023-01-25T14:52:07","date_gmt":"2023-01-25T14:52:07","guid":{"rendered":"https:\/\/www.ultrapharmrx.com\/blog\/?p=1906"},"modified":"2026-04-16T01:50:44","modified_gmt":"2026-04-16T01:50:44","slug":"sildenafil-viagra-vs-vardenafil-levitra-similarities-differences-interactions-and-side-effects","status":"publish","type":"post","link":"https:\/\/ultrapharmrx.com\/blog\/sexual-health\/sildenafil-viagra-vs-vardenafil-levitra-similarities-differences-interactions-and-side-effects\/","title":{"rendered":"Sildenafil (Viagra) vs. Vardenafil (Levitra): Similarities, Differences, Interactions, and Side Effects"},"content":{"rendered":"

Sildenafil (Viagra) and Vardenafil (Levitra) are PDE-5 inhibitor drugs notably used to treat erectile dysfunction (ED). Individuals with ED may have problems producing or maintaining erections as firm and as long as they wish to enjoy satisfying sexual activity.<\/span><\/p>\n

PDE-5 inhibitors are safe, effective, and commonly used ED medicines. They work under the same premise of enhancing blood flow to the penis to help improve erectile function. PDE-5 inhibitors include tadalafil (Cialis) and vardenafil (Stendra).\u00a0<\/span><\/p>\n

However, it must be noted that all PDE-5 inhibitor drugs require sexual stimulation and arousal for them to work at their best.<\/span><\/p>\n

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Sildenafil (Viagra): a quick rundown<\/b><\/h2>\n

Sildenafil, also known under its brand name Viagra, is an FDA-approved oral medication for erectile dysfunction. It\u2019s also used to treat pulmonary arterial hypertension under the brand name Revatio. Sildenafil is sometimes prescribed \u201coff-label\u201d to treat Raynaud’s phenomenon, altitude sickness, and female sexual arousal disorder.<\/span><\/p>\n

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Vardenafil (Levitra): what you should know<\/b><\/h2>\n

Vardenafil, also known under its brand name Levitra, is another DDA-approved ED drug. vardenafil may also be used as an off-label treatment for Raynaud\u2019s phenomenon and pulmonary arterial hypertension.<\/span><\/p>\n

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Sildenafil and Vardenafil: how effective are they?<\/b><\/h2>\n

Sildenafil and vardenafil are known for their safety and effectiveness in treating ED. According to clinical studies, three out of four individuals taking standard sildenafil or vardenafil doses experienced improved erectile function. There is no known difference in effectiveness between sildenafil and vardenafil as yet.<\/span><\/p>\n

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How much time do Sildenafil (Viagra) and Vardenafil (Levitra) take before kicking in?<\/b><\/h2>\n

Sildenafil and vardenafil take about the same amount of time before kicking in.<\/span><\/p>\n

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Sildenafil<\/i><\/b><\/h3>\n

Sildenafil can kick in within 30 minutes of taking it, but can also take upwards of two hours. Sildenafil generally starts working within an hour of taking it for most individuals. This is why you should take sildenafil at least 60 minutes before you engage in sexual activity. It\u2019s possible to take sildenafil with or without food. However, if you eat a heavy, high-fat meal, it may delay the time it takes for sildenafil to kick in.<\/span><\/p>\n

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Vardenafil<\/i><\/b><\/h3>\n

Vardenafil works within approximately an hour, but it can kick in as soon as 30 minutes after taking it. Similar to sildenafil, vardenafil can be taken with or without food, and can take longer to kick in if you take it after a heavy meal high in fat.\u00a0<\/span><\/p>\n

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How long does Sildenafil and Vardenafil last in the body?<\/b><\/h2>\n

Sildenafil (Viagra) and vardenafil (Levitra) stay in the body for about the same amount of time.<\/span><\/p>\n

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Sildenafil<\/i><\/b><\/h3>\n

Sildenafil\u2019s effects generally last for up to four hours. However, this might differ based on other factors such as dosage, other health conditions you have, or if you\u2019re taking certain types of medicines and supplements..<\/span><\/p>\n

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Vardenafil<\/i><\/b><\/h3>\n

Vardenafil\u2019s effects last around four to five hours, or just slightly above that of sildenafil. Similar to sildenafil, this window of effectiveness may depend on certain factors like dosage strengths and medical history.<\/span><\/p>\n

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What doses are Sildenafil and Vardenafil available in?\u00a0<\/b><\/h2>\n

This is one of the key factors where sildenafil and vardenafil are clearly different.<\/span><\/p>\n

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Sildenafil<\/i><\/b><\/h3>\n

Sildenafil citrate, or its brand name Viagra, comes in three dosages: 25 mg, 50 mg, or 100 mg oral tablets.<\/span><\/p>\n

In general, most individuals with ED are given the starting dose of 50 mg, to be taken 30 minutes to an hour before engaging in sex. Depending on your medical history, however, your doctor may decide to switch you on a lower or higher dose.<\/span><\/p>\n

You can take sildenafil on an empty stomach or with food. Taking a heavy, high-fat meal may take your body longer to absorb the drug, taking it longer to kick in.<\/span><\/p>\n

The maximum single daily dose for sildenafil is 100 mg per day.<\/span><\/p>\n

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Vardenafil<\/i><\/b><\/h3>\n

Vardenafil hydrochloride, also sold as Levitra, is an oral tablet available in 2.5 mg, 5 mg, 10 mg, and 20 mg doses.<\/span><\/p>\n

Most people with ED who are prescribed vardenafil are put on a starting dose of 10 mg. Your starting dose may be adjusted by your doctor depending on your medical history.<\/span><\/p>\n

Vardenafil should be taken approximately one hour before engaging in sexual activity. You can take vardenafil with or without food, but a heavy meal may delay the time it takes to kick in.<\/span><\/p>\n

The maximum single daily dose for vardenafil is 20 mg per day.\u00a0<\/span><\/p>\n

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What side effects should I expect from taking Sildenafil and Vardenafil?<\/b><\/h2>\n

Sildenafil and vardenafil\u2019s side effects are similar and your mileage may vary depending on your dose, medical history, and other considerations.<\/span><\/p>\n

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