Bigfun 50 Mg (Sildenafil Citrate)

Price range: $83.32 through $175.14Required

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Pack SizePriceUnit PriceQuantity 
60 Tablet/s$83.32$1.39 / tablet
120 Tablet/s$132.68$1.11 / tablet
180 Tablet/s$175.14$0.97 / tablet
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Estimated delivery: October 7, 2026 – October 12, 2026
Written by Dr Ambrose Chan, MD, MD Medically reviewed by Dr. Sabrina Castillon, MD, MD
Last updated on September 11, 2026
Description

About Bigfun 50 Mg (Sildenafil Citrate)

Medicine information

Indication
Treatment of erectile dysfunction in adult men. Sexual stimulation is required for sildenafil to help produce an erection.
Strength
50 mg

Medicine overview

Bigfun 50 mg is a film-coated sildenafil tablet for erectile dysfunction in adult men. Each tablet contains sildenafil citrate equivalent to 50 mg of sildenafil. Sildenafil belongs to the phosphodiesterase type 5 (PDE5) inhibitor class. It improves the natural erectile response by increasing blood flow into the penis during sexual stimulation. Bigfun 50 is listed by its manufacturer as a prescription-only medicine and should be used according to the prescriber's instructions.

What it is used for

Bigfun 50 mg is indicated for erectile dysfunction, meaning difficulty achieving or maintaining an erection sufficient for satisfactory sexual activity. It does not produce an erection automatically and does not increase sexual desire; sexual stimulation is still needed for sildenafil to work. The manufacturer also mentions sildenafil use in pulmonary hypertension, but Bigfun 50 is specifically presented as an erectile-dysfunction product.

How it works

During sexual stimulation, nitric oxide is released in erectile tissue and increases cyclic guanosine monophosphate, or cGMP. This chemical relaxes smooth muscle and allows more blood to enter the penis. Sildenafil blocks PDE5, the enzyme that normally breaks down cGMP. By slowing that breakdown, sildenafil strengthens the natural blood-flow response to sexual stimulation. It does not have the same erectile effect when sexual stimulation is absent.

How it is taken

Take Bigfun 50 by mouth exactly as prescribed. General sildenafil guidance states that a 50 mg tablet is usually taken as needed about 1 hour before sexual activity and may be taken 30 minutes to 4 hours beforehand. Do not take sildenafil more than once in a day. It may be taken with or without food, although a high-fat meal can delay the start of its effect.

Important warnings

Do not take sildenafil with nitrates such as nitroglycerin, nitrate-containing “poppers,” or guanylate cyclase stimulators such as riociguat because blood pressure can fall dangerously. Sildenafil should not be used when sexual activity is medically inadvisable because of cardiovascular disease. Tell the prescriber about alpha-blockers, blood-pressure medicines, strong CYP3A4 inhibitors, HIV protease inhibitors, other erectile-dysfunction medicines, kidney or liver disease, bleeding problems, stomach ulcers, penile deformity, blood-cell disorders, or previous serious vision problems. Seek urgent medical attention for an erection lasting longer than 4 hours or sudden loss of vision or hearing.

Side effects and monitoring

Common effects include headache, flushing, indigestion or upset stomach, abnormal or blurred vision, nasal congestion, back or muscle pain, nausea, dizziness and rash. Serious but uncommon problems include prolonged erection or priapism, sudden vision loss, and sudden decrease or loss of hearing. Rare cardiovascular events have also been reported, particularly in men with existing cardiovascular risk factors, although a direct causal relationship is not always established. Obtain urgent medical care for an erection lasting more than 4 hours, sudden vision loss, sudden hearing loss, chest pain, fainting or other severe symptoms.

Pregnancy

Bigfun 50 is indicated for adult men, and sildenafil tablets for erectile dysfunction are not indicated for use in females. There are no adequate human pregnancy data for this erectile-dysfunction use, so use during pregnancy is not established for this product.

Breastfeeding

Bigfun 50 is not indicated for use in females. Limited data show that sildenafil and its active metabolite can be present in human milk, but information about effects on a breastfed child or milk production is insufficient.

Food, drink and interactions

Avoid drinking excessive amounts of alcohol while using sildenafil. Heavy alcohol intake can make it more difficult to achieve an erection and may reduce the practical benefit of treatment.

Food and drink

Sildenafil can be taken with or without food. A high-fat or large meal can delay absorption and make the medicine take longer to start working. NHS guidance also advises avoiding grapefruit and grapefruit juice because they can increase the likelihood of side effects.

Frequently asked questions

How long before sex should I take sildenafil 50 mg?

General prescribing information recommends taking sildenafil about 1 hour before sexual activity. It may be taken between 30 minutes and 4 hours beforehand, and it should not be taken more than once a day.

Will a heavy meal stop Bigfun 50 from working?

It may delay the effect rather than completely prevent it. High-fat meals slow sildenafil absorption, so it can take longer to start working.

Does sildenafil work without sexual stimulation?

No. Sildenafil supports the natural erectile response, but sexual stimulation is still required.

Can I drink alcohol after taking Bigfun 50?

Avoid excessive alcohol. Heavy drinking can itself make getting an erection more difficult and may interfere with the practical benefit of sildenafil.

What should I do if sildenafil 50 mg does not work the first time?

Do not take extra tablets on the same day unless specifically instructed by your prescriber. Timing, food, sexual stimulation and underlying health can affect response, so repeated lack of effect should be discussed with the prescriber rather than managed by changing the dose yourself.

Why can sildenafil cause a headache or flushing?

Headache and flushing are among the commonly reported effects of sildenafil. They are related to its blood-vessel-widening action; seek medical advice if symptoms are severe or persistent.

Can I take Bigfun 50 with nitroglycerin or other nitrate medicines?

No. Combining sildenafil with nitrates can cause a dangerous fall in blood pressure. It must also not be combined with nitrate-containing “poppers” or riociguat.

What if an erection lasts longer than 4 hours?

Seek emergency medical attention immediately. A prolonged erection can damage penile tissue if it is not treated promptly.

Sources

  1. www.leeford.in
  2. www.leeford.in
  3. www.dailymed.nlm.nih.gov
  4. www.nhs.uk
  5. www.medicines.org.uk

Medical information notice: This information does not replace advice from a qualified healthcare professional. Use prescription medicine only as directed by the prescriber and the approved product information.

Additional information
Active IngredientsSildenafil Citrate
ManufacturerLeeford Pharma, India
PackagingQty
strength50mg
Delivery Time6 To 15 days
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