Product Details

Features of Zenegra

Zenegra is an ED treatment medication designed to improve symptoms of erectile dysfunction (ED).

This product contains the same active ingredient as the globally renowned Viagra and is characterized by its blue diamond-shaped tablets.

Efficacy of Zenegra

The main ingredient, sildenafil, works by inhibiting PDE-5 (phosphodiesterase type 5), which obstructs erection.

The PDE-5 enzyme breaks down cyclic guanosine monophosphate (cGMP), which is mediated by nitric oxide and necessary for erection.

When cGMP is excessively broken down, normal erection cannot be achieved, a condition known as ED (erectile dysfunction).

Sildenafil inhibits the PDE-5 enzyme, thereby dilating blood vessels around the penis and relaxing the smooth muscles of the penile corpus cavernosum.

This effect allows more blood to flow into the penile corpus cavernosum tissue, promoting erection.

Time to Onset of Zenegra

• Onset time: Approximately 30 minutes to 1 hour after ingestion
• Peak effect: Approximately 1 hour after ingestion
• Duration: Approximately 5 hours

These times are reference values when taken on an empty stomach. Taking it after meals may delay the onset time.

Difference Between Zenegra and Viagra

Zenegra is a generic version of Viagra, containing the same active ingredient, sildenafil. Both are comparable in efficacy and safety, but differ in ingredient concentration and price.

The efficacy of sildenafil is dose-dependent. Through our site, you can legally import 100mg generic versions produced overseas at a more cost-effective price.

Specifications

We offer an overseas version in 100mg dosage. First-time users are advised to use a pill cutter to divide the tablet in half.

Product Advantages

With equivalent efficacy, the price is only 1/3 of the original brand, offering outstanding cost performance.

Related Products

• Viagra Generic Drugs

Usage Instructions

Timing of Administration

The correct way to take Zenegra is on an empty stomach, one hour before sexual activity.

Wait at least 24 hours before taking the next dose.

Recommended Dosage

The Zenegra sold on this website is 100mg, which can be split into half (50mg) using a pill cutter.

If 25mg shows insufficient effects, gradually increase to 50mg or 100mg as needed.

Note: Some users may take double or triple doses for stronger effects, but this does not enhance efficacy.

The maximum single dose per sexual encounter should not exceed 50mg.

For smaller individuals, 25mg/50mg may suffice. The 100mg formulation is more suitable for larger-bodied Western men.

Advice for New Users

First-time users of sildenafil-based medications should start with a 25mg dose.

Food Interactions

It is recommended to fast for 2 hours before taking the medication.

Sildenafil needs to be absorbed through the intestines into the bloodstream. Food in the stomach may hinder this.

High-fat foods may severely impair absorption by coating the intestinal walls.

After 30 minutes, once absorption is complete, normal eating can resume.

Alcohol Interactions

While alcohol can be consumed, vasodilation may accelerate intoxication, so avoid excessive drinking.

Contraindications

• Individuals with cardiovascular diseases (heart/blood vessel disorders) who are not fit for sexual activity
• Patients with severe liver dysfunction
• Individuals with hypotension or uncontrolled hypertension
• Those who have experienced stroke, cerebral hemorrhage, or myocardial infarction within the last 6 months

※Always follow your doctor's instructions when taking this medication.

Side Effects

Primary Side Effects

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

These symptoms may alleviate with increased sexual desire and blood flow.

Special Symptoms

Some users may experience visual abnormalities such as a blue tint or difficulty distinguishing between blue and green.

These are usually temporary. However, if vision significantly deteriorates, there may be a risk of Non-Arteritic Anterior Ischemic Optic Neuropathy (NAION).

If an erection with pain persists for more than 4 hours, there may be a risk of Priapism (Persistent Erection). Seek immediate medical attention in either case.

※What is Non-Arteritic Anterior Ischemic Optic Neuropathy (NAION)?

A condition where optic nerve cells malfunction or die due to interrupted blood supply. Though rare, a weak correlation with ED medication use exists.

※What is Priapism (Persistent Erection)?

A prolonged erection that does not subside, possibly caused by arterial dysfunction in the penis. If lasting more than 4 hours, seek urgent care.

Contraindicated Drug Combinations

Contraindications

Do not use Zenegra with the following medications:

• Nitrate medications and NO donors (Nitroglycerin, amyl nitrite, isosorbide dinitrate)
• Amiodarone hydrochloride (e.g., Ancarone tablets)

These may dangerously lower blood pressure or intensify cardiac effects.

Precautions for Combined Use

• Grapefruit (including juice) — may delay drug breakdown and increase side effects
• CYP3A4 inhibitors/inducers (ritonavir, saquinavir, darunavir)
• Antihypertensive drugs — may increase risk of dizziness and low blood pressure

Storage Method

• Store in a cool, dry place away from direct sunlight.
• Keep out of reach of children.
• Do not transfer to another container.
• If divided, store airtight and use within 2 days.
• Do not use after the expiration date.

Appraisal Results

Manufacturer

Alkem Laboratories