The active ingredient of Cobra is Sildenafil Citrate. It belongs to the PDE-5 family of vasodilators. These drugs work by dilating the blood vessels in the body — particularly around the genital area. This allows stronger blood flow to enable an erection to take place. Sildenafil Citrate is now one of the standard treatments for erectile dysfunction.
Cobra is not an aphrodisiac and stimulation will be required to develop an erection.
To get the best from your treament, please read the following carefully.
The safe indicated dose of Cobra (Sildenafil Citrate) within a 24 hour period is 120mg (1 tablet). This medicine will become effective within 30 to 60 minutes. Effective treatment time is 4 - 6 hours. Always take this medicine with a large glass of water.
Avoid large or fatty meals close to when you intend to take the medicine. Additionally, avoid the regular consumption of large amounts of grapefruits and grapefruit juice. Grapefruit can raise the levels of Sildenafil Citrate in your body and delay the time it takes for the medication to work.
Alcohol will also reduce the effectiveness of this medicine. Sildenafil Citrate can lower blood pressure, and combining it with alcohol may further increase this effect. You may be more likely to experience symptoms such as dizziness, lightheadedness, fainting, flushing, headache, and heart palpitations. You should avoid or limit the use of alcohol while being treated with Sildenafil Citrate, and use caution when getting up from a sitting or lying position.
Along with its needed effects, Cobra (Sildenafil Citrate) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Commonly reported side effects of Cobra (Sildenafil Citrate) include: dyspepsia, headache, visual disturbance, and flushing. Other side effects include: epistaxis, insomnia, nasal congestion, and rhinitis. See below for a comprehensive list of adverse effects.
Common side effects
These common side effects are connected to dehydration and usually diminish by increasing water intake.
- Facial redness or flushing
- Blocked nose
- Dryness in eyes
- Mild Nausea
Less common side effects
The following side effects of Cobra (Sildenafil Citrate) may occur that usually do not need medical attention. These side effects are not dangerous and may normally diminish as your body adjusts to the medicine. Patients presenting with these side effects generally do not need to stop taking Cobra (Sildenafil Citrate).
Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
- Aches or pains in the muscles
- Difficult or labored breathing
- Light sensitivity
- Pain or tenderness around the eyes and cheekbones
- Redness of the skin
- Slight blurred vision
- Slight blueness in vision
- Stomach discomfort following meals
- Trouble sleeping
- Unusually warm skin
Serious side effects (uncommon)
Although serious side effects are rare, if you experience any the following serious side effects, stop taking Cobra (Sildenafil Citrate) and seek emergency medical care immediately.
- Erection longer than 4 hours (Priapism)
- Severe decrease or loss of vision
- Severe decrease or loss of hearing
- Cloudy or bloody urine
Patients taking the following medicine types should NOT take Cobra (Sildenafil Citrate):
- Nitroglycerin medicines
- Nitroprusside medicines
- Amyl Nitrate (Recreationally known as poppers)
- Organ Donor Recipient medicines
- Azole antifungal medicines taken orally (topical creams for treatment of candida / thrush are safe)
Cobra (Sildenafil Citrate) is not suitable for everyone. Patients under treatment for the following conditions; or any ongoing managed condition, should consult their doctor prior to taking Cobra (Sildenafil Citrate):
- Heart Related & Cardiovascular diseases including aortic stenosis, idiopathic hypertrophic subaortic stenosis and general ventricular outflow obstruction
- Stroke, myocardial infaction (heart attack) or serious arrhythmia
- Cardiac failure or coronary artery disease causing unstable angina
- Blood Pressure related diseases including Hypertension & Hypotension and patients with severley impaired autonomic control of blood pressure
- Resting hypotension (low blood pressure) of (BP <90/50)
- Resting hypertension (high blood pressure) of (BP >170/110)
- Retinitis pigmentosa (genetic disease of the retina)
- Sickle cell or other related anaemias
- HIV (specifically on treatment with protease inhibitors)
- Organ donor recipients
Do not take more than one dose of Cobra (Sildenafil Citrate) per day.
Do not consume grapefruit or grapefruit products while taking Cobra (Sildenafil Citrate).
Always talk to your doctor before taking ANY medication for erectile dysfunction. Some erectile dysfunction medications are not suitable for men with certain medical conditions, and your doctor can advise you on an alternative.
Call your doctor immediately if you experience dizziness or feel nauseous during sexual activity, or develop pain, numbness, tingling in your chest, arms, neck, or jaw.
Do not take Cobra (Sildenafil Citrate) if you are also taking a nitrate drug (such as nitroglycerin or isosorbide dinitrate/mononitrate) for chest pain or heart problems. Do not take Cobra (Sildenafil Citrate) with recreational drugs such as "poppers". Taking these substances together can cause a sudden and dangerous drop in blood pressure.
Always buy your medications from a reputable supplier as there are a lot of counterfeit products on the market.
Certain lifestyle and psychological factors, such as smoking, drinking, and stress, can impact on erectile dysfunction. Eliminating these - for example, staying more active, losing weight if you are overweight, reducing alcohol intake, stopping smoking and reducing stress - may also help improve erectile dysfunction.
Never take other erectile dysfunction medications at the same time as taking Cobra (Sildenafil Citrate).
Seek urgent medical advice if an allergic reaction, sudden vision loss or painful erections lasting more than four hours occur.
Drinking alcohol after taking Cobra (Sildenafil Citrate) may lower blood pressure and decrease sexual performance.
Cobra (Sildenafil Citrate) blocks the action of an enzyme known as cGMP-specific phosphodiesterase type-5 (PDE-5). This enzyme breaks down cGMP, a substance that induces smooth muscles to relax. Blocking PDE-5 means increased levels of cGMP within the smooth muscles which promotes muscle relaxation and vasodilation (a widening of blood vessels).
High levels of PDE-5 are found in the penis, lungs, and retina. PDE-5 is also found throughout the body within the smooth muscle cells of blood vessels and muscles.
Sildenafil Citrate belongs to the class of medicines known as PDE-5 inhibitors. Sildenafil Citrate increases blood flow to the penis following sexual stimulation. It does this by blocking the enzyme responsible for the breakdown of cGMP. cGMP is a substance that relaxes and widens blood vessels and smooth muscle cells. This allows men to keep an erection hard enough for sex.
Sildenafil Citrate only works following sexual stimulation. It works within 30 to 60 minutes, but may be taken up to four hours before sexual activity.
Sildenafil Citrate is used to treat erectile dysfunction (ED) and to reduce blood pressure in pulmonary arterial hypertension (PAH). It is taken when needed for ED and on a daily basis for PAH. A headache, stomach upsets and flushing are the main side effects.
Sildenafil Citrate 120mg
|Included in package||
30 - 60 minutes
|Effective treatment time||
4 - 6 hours