What Is Cenforce?
Cenforce is a sildenafil citrate tablet. Sildenafil belongs to a group of medicines called phosphodiesterase type 5 inhibitors, also known as PDE5 inhibitors. These medicines are used to support the natural erectile response in men with erectile dysfunction.
An erection is a complex process involving the brain, nerves, hormones, blood vessels and emotional wellbeing. Problems with any of these factors can affect sexual performance. ED may be associated with diabetes, high blood pressure, high cholesterol, heart and blood-vessel conditions, smoking, alcohol use, stress, anxiety, depression or certain medicines.
Occasional erection difficulty can happen to anyone. However, repeated symptoms should be discussed with a healthcare professional because ED can sometimes be linked with an underlying health condition.
How Sildenafil Works
During sexual stimulation, the body releases nitric oxide in erectile tissue. This helps produce a natural chemical called cyclic GMP, which relaxes blood vessels and allows more blood to enter the penis.
An enzyme called PDE5 breaks down cyclic GMP. Sildenafil temporarily reduces PDE5 activity, allowing cyclic GMP to remain active for longer. This can improve blood flow and support an erection when sexual stimulation occurs.
Sildenafil does not create sexual desire and does not cause an automatic erection. It works only when a person is sexually aroused. It is also not a treatment for low libido, infertility or sexually transmitted infections.
Timing and How to Take It
Sildenafil commonly begins working within about 30 to 60 minutes, although the timing may vary from person to person. Factors such as a heavy meal, alcohol use, other medicines, health conditions and anxiety can affect how quickly it works.
For erectile dysfunction, sildenafil is generally taken before planned sexual activity, exactly as directed by a healthcare professional. It should not be taken more than once in 24 hours unless a clinician has specifically advised otherwise.
A few practical points to remember:
- Take only the dose that has been recommended for you.
- Swallow the tablet with water unless a clinician gives different instructions.
- Sexual stimulation is necessary for the medicine to work.
- A high-fat meal may delay the effect.
- Do not take an additional tablet if the first dose does not give the expected result.
- Do not combine sildenafil with another erectile dysfunction medicine without medical advice.
- Limit alcohol because heavy drinking can increase dizziness and make erections more difficult.
The suitable sildenafil dose can vary based on age, medical history, liver or kidney function, other medicines and individual response. A healthcare professional can advise on the most appropriate dose.
For more information about lower sildenafil strengths, see our Cenforce 25 mg guide and Cenforce 50 mg guide.
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Side Effects
Like all medicines, sildenafil can cause side effects. Many side effects are mild and temporary, but persistent or troubling symptoms should be discussed with a doctor or pharmacist.
Common side effects may include:
- Headache
- Facial flushing
- Indigestion or heartburn
- Nasal congestion
- Dizziness
- Nausea
- Temporary changes in vision, such as blurred vision or a blue colour tinge
Seek urgent medical help if you experience chest pain, fainting, sudden loss of vision or hearing, a serious allergic reaction, or an erection that is painful or lasts longer than four hours. A prolonged erection needs immediate treatment.
Safety, Nitrates and Interactions
Sildenafil is not suitable for everyone. The most important safety rule is that it must not be taken with nitrate medicines. Nitrates may be prescribed for chest pain and include medicines such as nitroglycerin and isosorbide. Combining sildenafil with nitrates can cause a dangerous fall in blood pressure.
It should also not be combined with:
- Nitric oxide donors
- Recreational nitrate products, often called “poppers”
- Riociguat
- Other sildenafil-containing medicines
- Other erectile dysfunction treatments, unless specifically advised
Tell a healthcare professional about all medicines and supplements you use, including alpha-blockers, blood-pressure medicines, antifungal medicines, certain antibiotics, HIV medicines and herbal products. These can change the effect of sildenafil or increase side-effect risks.
For detailed official medicine information, see the DailyMed sildenafil prescribing information and NHS sildenafil guidance.
Who Should Seek Medical Advice First?
Speak with a healthcare professional before using sildenafil if you have heart disease, chest pain, low blood pressure, uncontrolled high blood pressure, or a recent heart attack or stroke. Medical advice is also important for people with significant liver or kidney problems, certain eye conditions, a history of prolonged erections, or an allergy to sildenafil.
Tell your clinician or pharmacist about every medicine and supplement you use. Sildenafil must not be taken with nitrate medicines, riociguat, or recreational nitrate products known as “poppers,” as these combinations can cause a dangerous drop in blood pressure.
Frequently Asked Questions
Is Cenforce the same as sildenafil?
Cenforce contains sildenafil citrate. Sildenafil is the active ingredient that works as a PDE5 inhibitor to support erections during sexual stimulation.
How long does Cenforce take to work?
Sildenafil commonly begins working within 30 to 60 minutes. A heavy meal may delay the effect.
Does Cenforce increase sexual desire?
No. Sildenafil supports blood flow during sexual stimulation but does not increase libido.
Can I take Cenforce every day?
Use sildenafil only as directed by a qualified healthcare professional. Do not take more than one dose within 24 hours unless specifically instructed.
Can I take Cenforce with alcohol?
Heavy alcohol use can increase dizziness, lower blood pressure and make erections more difficult. Limiting alcohol is generally sensible.
Can I take Cenforce with heart medicine?
Not always. Sildenafil must not be used with nitrates or riociguat. Speak with a clinician or pharmacist before taking it with any heart or blood-pressure medicine.
What should I do if sildenafil does not work?
Do not take another tablet or increase the dose yourself. Food, timing, alcohol, anxiety, health conditions and other medicines can affect the response. Speak with a healthcare professional if the problem continues.
Medical References
Content written by
Dr. Neha Sharma
Senior Medical Writer & Pharmacovigilance Professional
Medically reviewed by
Dr. Ranjith Ramasamy, MD
Consultant Urologist & Male Reproductive Medicine Specialist
Medical Disclaimer
The information on cenforcehq.com is provided for general educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment and should not be used as the sole basis for starting, stopping, or changing any medicine. Always consult a doctor or qualified healthcare professional about symptoms, health conditions, medicines, and treatment decisions. Never disregard or delay seeking professional medical advice because of information on this website.