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

The expected duration of Zenegra's effect is as follows:

The above times are reference values when taken on an empty stomach. Note that taking 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
Sildenafil series:
・Viagra Generic Drugs

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

After the first dose, the next dose should be taken no sooner than 24 hours later.

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. Adjust the dosage according to your individual response.

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.

This is because sildenafil needs to be absorbed through the intestines into the bloodstream.

Food in the stomach may cause the tablet to be absorbed before reaching the intestines.

If high-fat foods are consumed before dosing, the fats may coat the intestinal walls, severely impairing absorption.

Poor absorption will prevent the medication from working effectively, so always take it on an empty stomach.

After 30 minutes, when 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/myocardial infarction within the last 6 months

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

Primary Side Effects
The main side effects include decreased blood pressure due to vasodilation, eye congestion, facial flushing, palpitations, nasal congestion, etc.

These symptoms are considered to be caused by vasodilation effects and may alleviate when increased sexual desire accelerates penile blood flow.

Special Symptoms
Unusual visual abnormalities may occur, such as feeling like wearing blue-tinted glasses or difficulty distinguishing between blue and green.

Most cases are temporary and not concerning, but if vision significantly deteriorates, there is a risk of Non-Arteritic Anterior Ischemic Optic Neuropathy (NAION).

In the event of sudden vision deterioration or vision loss, consult an ophthalmologist promptly.

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

If the erection lasts longer than 4 hours, seek immediate medical attention.

※What is Non-Arteritic Anterior Ischemic Optic Neuropathy (NAION)?
A condition where the optic nerve cells malfunction or die due to interrupted blood supply to the optic nerve.
This condition is called ischemic optic neuropathy.
Although the causal relationship is unclear, a weak correlation with ED medication usage has been confirmed.

※What is Priapism (Persistent Erection)?
Priapism, also known as persistent erection, refers to a state where the penis remains erect and cannot return to normal or has difficulty doing so.
It is also called penile rigidity.
The primary cause is believed to be dysfunction in the arterial system within the penile corpus cavernosum.
If the erection does not subside naturally and lasts more than 4 hours, seek immediate medical treatment.

Contraindications
Contraindicated drugs refer to medications that must not be taken simultaneously with Viagra (sildenafil) due to potential interactions.

・Nitrate medications and NO donors
(Nitroglycerin, amyl nitrite, isosorbide dinitrate)
Concomitant use may enhance blood pressure-lowering effects.

・Amiodarone hydrochloride
(Ancarone tablets)
Combination may intensify QT prolongation caused by amiodarone hydrochloride.

Precautions for Combined Use
These medications require special attention when used with Viagra.

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

・CYP3A4 inhibitors・inducers
Ritonavir, saquinavir, darunavir

・Antihypertensive drugs
As Viagra itself has blood pressure-lowering effects, concurrent use with antihypertensives may cause temporary dizziness, postural instability, or other hypotension symptoms.

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

・Keep out of reach of children.

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

・For the remaining divided packet, store in an airtight environment as much as possible and consume within 2 days.

・Do not consume or use products past their labeled expiration date.

Alkem Laboratories