Vardenafil, which is marketed under the brand name Levitra, is a prescription medication used for erectile dysfunction. It is an enzyme that reduces the effects of another type of chemical called cyclic guanosine monophosphate (cGMP). cGMP is a second messenger that plays a role in the body’s response to sexual stimulation.

It is also used for different other medical conditions. Vardenafil belongs to a group of medications called phosphodiesterase type 5 (PDE5) inhibitors. PDE5 is an enzyme that breaks down a natural chemical in your body that causes your blood vessels to relax and opens up so your blood can flow more freely.

Vardenafil is approved for the treatment of erectile dysfunction (ED), and is the first medicine of its kind and is known for its fast-acting, long-lasting effect.

Vardenafil (Levitra) Dosage

It is generally recommended that most patients begin with a starting dose of Levitra of 10 mg, taken orally as needed approximately an hour before sexual activity. In accordance with the efficacy and side effects, the dosage may be increased to 20 mg or decreased to 5 mg. 

It is recommended that this drug be taken only once per day. Unlike other drugs for ED, Levitra won’t induce an erection in the absence of sexual stimulation.

How To Take Vardenafil

How to take Vardenafil

Vardenafil is available in two forms: a tablet and a pellet that is rapidly disintegrating (that is, it dissolves in the mouth and is swallowed without water). It is usually taken as needed, with or without food, 60 minutes before sexual activity, depending on the individual. Vardenafil should not be taken more than once every 24 hours, according to most experts.

If you have certain medical conditions or are taking certain medications, such as diabetes, it is possible that your doctor will recommend that you take your vardenafil less frequently. Continue to carefully read and follow the directions on your prescription label, and ask your doctor or pharmacist to explain any parts of the instructions that you do not understand.

The most effective way to take Vardenafil (Levitra) is to follow your doctor’s directions exactly. Do not take more or less of it, or take it more often than your doctor prescribes. You can take the dissolving tablet with a glass of water, but take it right after a meal. Do not take the medication from the blister pack if any of the blisters are torn, broken, or not containing tablets.

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Open the blister pack and pull the plastic tab to gently pry open the blister. Carefully remove the tablet from the pack using a spoon. Open your mouth, swallow the tablet and then place the tablet back in the blister pack. The blister pack should then be returned to the medicine cabinet for safe storage.

Because the tablet will dissolve quickly, it is not recommended that it be taken with liquid. Your doctor will most likely start you on a prescribed dose of vardenafil tablets and will adjust your dose as necessary, either increasing or decreasing it. This means that if you take rapidly disintegrating tablets, your doctor will be unable to adjust your dosage because the rapidly disintegrating tablets are only available in a single dosage form.

Vardenafil Side Effects

Vardenafil side effects

Vardenafil has a few side effects. Most of them are mild to moderate in nature and include:

  • Headache
  • Flushing
  • Dizziness
  • Nausea
  • Dry mouth

Rare side effects include:

  • Allergic reaction
  • Chest pain
  • Nervousness
  • Ringing in the ears
  • Heart palpitations
  • Low blood pressure

After taking vardenafil or other medications similar to vardenafil, some patients have reported a sudden loss of some or all of their visual acuity. In some cases, the vision impairment was permanent. It is currently unknown whether the medication was the cause of the vision loss. If you experience a sudden vision loss while taking vardenafil, call your doctor right away to discuss it. Until you speak with your doctor about stopping the medication altogether, take no more vardenafil or similar medications, such as sildenafil (Viagra) or tadalafil (Cialis)

Some patients have also reported a sudden decrease or loss of hearing. When a hearing loss occurs, it usually affects only one ear and may not improve over time. It is not known whether the medication was the cause of the hearing impairment. You should contact your doctor right away if you experience sudden loss of hearing, which may be associated with ringing in the ears or dizziness, while taking vardenafil. Until you speak with your doctor about stopping the medication altogether, take no more vardenafil or similar medications.

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Before taking vardenafil (Levitra), tell your doctor if you are allergic to it, or if you have any other allergies. This product can contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your doctor if you have any questions about this product.

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Your pharmacist can tell you what other medications might interact with this one. 

Don’t forget to tell your doctor about any health conditions, current medications, or alcohol or recreational drug use, before taking vardenafil. Also, tell them if you’ve been exposed to a virus or other infection recently.

Limit alcoholic beverages. Talk to your doctor if you are using marijuana (cannabis). This medication contains aspartame. If you have PKU or any other condition that requires you to limit/avoid aspartame in your diet, talk to your doctor or pharmacist about using this medication safely.

Vardenafil Drug Interactions

Vardenafil drug interactions

Drugs that may interact with vardenafil include cimetidine (Tagamet), itraconazole (Sporanox), and phenytoin (Dilantin). Ask your doctor if it’s safe to take vardenafil if you are taking any of these drugs.

Vardenafil is not known to interact with other medications. However, it may cause changes in blood pressure or heart rate. Tell your doctor if you have high or low blood pressure, heart or liver problems. Also report any other symptoms that may occur when taking this medicine, including stomach upset. Do not take more than the recommended dose or use for longer than recommended by your doctor.


Vardenafil is a prescription medication that is used to treat erectile dysfunction. It is only available with a prescription and should be taken as directed by your doctor.

As has been noted in this article, vardenafil may cause side effects such as a sudden loss of some or all of your vision, a sudden decrease or loss of hearing, or a sudden loss of some or all of your hearing. If you experience any of these side effects, talk to your doctor right away to make sure that you are not developing a serious condition. Your doctor may recommend a different dosage or treatment if you are taking any other medications.

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Frequently Asked Questions

1. Is Vardenafil Better Than Viagra?

We know from clinical studies that both Levitra and Viagra have been shown to be effective, but which is the superior product? While Levitra was found to be more potent than Viagra in a study comparing drugs for erectile dysfunction, both drugs were found to be equally effective in the treatment of erectile dysfunction. The only advantage Levitra had over Viagra was that it did not interfere with color perception, which is something that can happen with Viagra on occasion. Another study discovered that both medications were well-tolerated, with Levitra being marginally better tolerated than Viagra. 

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If you want to take Levitra or Viagra, the only person who can determine which medication is the most effective for you is your healthcare provider, who will consider your medical history and condition(s), as well as any other medications you are taking that could interact with Levitra or Viagra.

2. How Does Vardenafil (Levitra) Compare To Cialis?

The active ingredients in Levitra and Cialis are the most significant distinction between the two medications. Levitra contains the active ingredient vardenafil, while Cialis contains the active ingredient tadalafil. 

Despite the fact that both medications can be used as needed before sexual activity, Cialis can be used for a variety of other things. Cialis is a prescription medication that can be taken on a daily basis by men who have benign prostatic hyperplasia (BPH) and/or erectile dysfunction. Cialis is able to treat multiple conditions at the same time in this manner. 

Levitra can take up to an hour to begin working, with effects lasting for approximately 4 to 6 hours after that. While the Cialis medication label states that it should be taken 30 minutes before sexual activity, it is common for it to take 2 or 3 hours for Cialis to begin working. Cialis, on the other hand, has a longer duration of action than Levitra, with effects lasting up to 36 hours. 

According to their drug labels, Levitra and Cialis can be taken with or without food, but research suggests that this is not the case. The absorption of Levitra may be hampered by the consumption of high-fat foods, whereas the absorption of Cialis is not significantly hampered by food.

3. How Long Before Vardenafil Starts To Work?

To be most effective, you should take one tablet 25-60 minutes before you intend to have sex, though it may continue to be effective for up to 4-5 hours after you have taken the pill. You should avoid taking the tablet right before bed. Take the tablet before or after eating, but if you have just consumed a large or high-fat meal, it may take longer for the medication to take effect.

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