Timing of Medication

Levitra should be taken on an empty stomach 20 minutes to 1 hour before sexual activity for optimal results.

A minimum interval of 24 hours is required before the next dose.

Dosage of Levitra

The maximum single-dose for Levitra per sexual encounter is 20mg.

First-time users of vardenafil-containing medications are advised to start with 10mg.

If 10mg proves insufficient, the dose may be increased to 20mg, gradually adjusting to find the optimal dosage.

Food Interactions

While Levitra is less affected by food intake, timing relative to meals matters.

● Pre-meal Administration
Recommended to take 30 minutes before eating.

Faster absorption and quicker onset occur when taken on an empty stomach.

● Post-meal Administration
Allow at least 2 hours after eating before taking the medication.

Undigested food may impede drug absorption.

Dietary Precautions

High-calorie meals may delay drug absorption.

For best results, choose meals containing less than 700kcal with under 30% fat content.

Alcohol Effects

While concurrent alcohol consumption is permitted, vasodilation effects may intensify intoxication - avoid excessive drinking.

User Experience Feedback

Below are user testimonials regarding administration timing with meals:

Most reports indicate optimal effects when taken either fasting or after light meals.

Common evaluations include "exceptionally potent when fasting" and "still effective after light meals", with high satisfaction regarding onset speed and erection firmness.

Minimal side effects contribute to widespread user confidence in safety.

Contraindications

・Cardiovascular patients for whom sexual activity is inadvisable

・Severe hepatic impairment

・Hypotensive patients or uncontrolled hypertension

・Stroke/heart attack survivors within past 6 months

※Always follow medical advice.

Primary Side Effects

The main side effects include decreased blood pressure due to vasodilation, eye redness, facial flushing, palpitations, and nasal congestion.

These symptoms are believed to be caused by the vasodilatory effects and tend to alleviate as blood flow intensifies toward the penis during sexual arousal.

Serious Side Effects

In rare cases, visual abnormalities may occur, such as difficulty distinguishing blue-green hues, resembling the effect of wearing blue-tinted glasses.

Most cases are temporary and not concerning, but if significant vision loss occurs, there may be a risk of serious conditions like non-arteritic anterior ischemic optic neuropathy (NAION).

If symptoms like sudden vision deterioration or vision loss appear, seek immediate ophthalmological care.

Additionally, if an erection persists for more than 4 hours with pain, there may be a risk of priapism (prolonged erection).

If an erection lasts beyond 4 hours, seek immediate medical attention.

※What is non-arteritic anterior ischemic optic neuropathy (NAION)?

It is a condition where blood supply to the optic nerve is interrupted, leading to dysfunction or necrosis of optic nerve cells. While a direct causal relationship remains unclear, it has been observed to have some correlation with ED medication use (occurrence is extremely rare).

※What is priapism (prolonged erection)?
Priapism refers to a persistent erection that does not subside, primarily caused by dysfunction in the arterial system of the penile corpus cavernosum. If an erection lasts more than 4 hours without resolving, seek medical help immediately.

User Feedback on Levitra Side Effects

Below are real user reviews regarding the side effects of Levitra.

Some users report side effects like "facial warmth" or "body heat" due to vasodilation, but most can use the medication without issues.

Additionally, depending on individual constitution, some users experience diarrhea the next day, which can be effectively managed with over-the-counter intestinal regulators or antidiarrheal medications.

Contraindications

Contraindicated drugs refer to medications that interact with Levitra and must not be taken concurrently.

・Nitrates and nitric oxide donors
(Nitroglycerin, Amyl Nitrite, Isosorbide Mononitrate)
Concurrent use may enhance hypotensive effects.

・Amiodarone Hydrochloride
(Ancoron Tablets)
Combined use may intensify QT interval prolongation caused by amiodarone.

・CYP3A4 inhibitors
(Antifungals, Anti-HIV medications, Telithromycin, Nefazodone, Ketoconazole, Itraconazole, Ritonavir, Saquinavir, Nelfinavir, Atazanavir, etc.)
May increase plasma concentration of this medication and prolong its half-life.

・Nirmatrelvir/Ritonavir (Paxlovid)

・Ensitrelvir (Xocova)

Precautions

Precautionary drugs refer to medications requiring special attention when used in combination with Levitra.

・Grapefruit (including juice)
Contains furanocoumarins that inhibit metabolic enzyme activity, delaying drug breakdown.
May lead to excessive absorption of drug components, enhancing efficacy or worsening side effects.

・Antihypertensive drugs
Since Levitra itself has hypotensive effects, concurrent use may cause temporary dizziness, unsteadiness, or other low blood pressure symptoms.

・Store in a cool place away from direct sunlight and with low humidity.

・Keep out of reach of children.

・Do not transfer to another container to avoid accidental ingestion or quality changes.

・When storing remaining medication from a single packet for subsequent doses, minimize air exposure and consume within 2 days.

・Do not use products past their expiration date.

Precautions for "Levitra"

Bayer