About Penegra 50 Tablet
Penegra 50 Tablet contains Sildenafil 50 mg. Sildenafil is a phosphodiesterase type 5 (PDE5) inhibitor used to treat erectile dysfunction in adult men. It helps achieve and keep an erection when sexually stimulated. It is taken only when needed, about an hour before sexual activity.
Uses of Penegra 50 Tablet
- Erectile dysfunction in adult men
Benefits
In erectile dysfunction
It improves blood flow to the penis, making it easier to get and keep an erection with sexual stimulation. It does not increase sexual desire and does not work without stimulation.
Side effects
Most side effects are mild and short-lived. Talk to your doctor if they bother you.
Common
- Headache
- Flushing
- Indigestion
- Blocked or runny nose
- Dizziness
- Changes in vision, such as a blue tinge or sensitivity to light
- Back or muscle pain
Get medical help if you notice
- An erection lasting more than 4 hours — seek emergency care to prevent lasting damage
- Sudden loss or decrease of vision in one or both eyes — stop and seek medical help straight away
- Sudden decrease or loss of hearing, or ringing in the ears — stop and seek medical help
- Chest pain, dizziness or nausea during sex — stop and seek medical help, and tell the doctor you took sildenafil
- Allergic reaction: rash, swelling of the face or lips, difficulty breathing — seek emergency care
How to use
Take it exactly as your doctor prescribed, about 1 hour before sexual activity, and not more than once a day. Swallow the tablet whole with water. A heavy or fatty meal can delay its effect.
How it works
It blocks the PDE5 enzyme. This keeps a natural chemical active for longer during sexual stimulation, which relaxes the blood vessels of the penis and lets more blood flow in.
Safety advice
Alcohol Caution
Heavy drinking can lower blood pressure, cause dizziness and make it harder to get an erection. Limit alcohol.
Pregnancy Consult your doctor
This medicine is not meant for use by women.
Breastfeeding Consult your doctor
This medicine is not meant for use by women.
Driving Caution
It can cause dizziness or changes in vision. Do not drive if you feel affected.
Kidney Caution
In severe kidney disease, your doctor may start with a lower dose.
Liver Caution
In liver disease, your doctor may start with a lower dose. It is not recommended in severe liver disease.
If you miss a dose
It is taken only when needed, so there is no missed dose. Do not take more than one dose in a day.
Quick tips
- Never take it with nitrate medicines for chest pain or with 'poppers' — the drop in blood pressure can be life-threatening.
- Tell your doctor if you have heart disease, low blood pressure or have had a stroke or heart attack.
- It needs sexual stimulation to work.
- It does not protect against sexually transmitted infections or pregnancy.
Substitutes
Same salts in the same strength from other makers. Only switch brands on your doctor's or pharmacist's advice; our pharmacist checks every order against the prescription.
Fact box
- Chemical class
- Pyrazolopyrimidinone derivative
- Therapeutic class
- Urology / sexual health
- Action class
- Phosphodiesterase type 5 (PDE5) inhibitor
- Habit forming
- No
- Prescription
- Required
Interactions with other medicines
Tell your doctor and pharmacist about every medicine, vitamin and herbal product you take.
| Medicine | What can happen |
|---|---|
| Nitrates (such as nitroglycerin, isosorbide) and amyl nitrite ('poppers') | Severe, life-threatening drop in blood pressure; never use together |
| Riociguat | Severe drop in blood pressure; do not use together |
| Alpha-blockers (such as prazosin, tamsulosin) and other blood pressure medicines | Can lower blood pressure too much |
| Ritonavir, ketoconazole, itraconazole, erythromycin and clarithromycin | Raise sildenafil levels and side effects |
| Other medicines for erectile dysfunction | Do not use together |
This page is general information to help you understand your medicine. It is not a substitute for advice from your doctor or pharmacist. Do not start, stop or change a medicine on your own.
Written by the Asthra Health Care team from the approved prescribing information (Sildenafil prescribing information (CDSCO-approved labelling); US FDA sildenafil labelling; NICE BNF: sildenafil). Pharmacist review pending.