It is also known that sildenafil acts on phosphodiesterase-1, -2 and -5 receptors. This act leads to a secondary increase in intracerebral circulation and vasodilator effects and ultimately leads to sympathetic overactivity, which increases the risk of intracranial bleeding [8,9].
Sildenafil (Viagra) Aggravates the Development of Experimental Abdominal Aortic Aneurysm | Journal of the American Heart Association.
Results from a small clinical trial suggest that Cialis, an erectile dysfunction drug in the same family of medicines as Viagra, might help prevent vascular dementia by increasing blood flow in the brain.
However, when used as directed and with the recommended precautions, Viagra is not normally associated with heart attacks or strokes. In fact, documented cases of Viagra causing strokes are typically associated with overuse and abuse of Viagra.
Viagra can cause some serious side effects. These can include an erection that will not go away (priapism), sudden vision loss in one or both eyes, and sudden hearing decrease or hearing loss. Some men have also experienced heart attack, stroke, irregular heartbeats and even death after taking Viagra.
If you take more than the recommended dose of Viagra, you can develop a condition known as priapism, which is an erection that lasts for longer than four hours. Priapism is a medical emergency and can result in serious damage to the delicate structures in your penis, so seek medical attention immediately.
The most common causes of a brain hemorrhage are: Head trauma - Injuries to the head are the most common reason for a brain hemorrhage to occur in people younger than 50 years old. High blood pressure - High blood pressure, if left untreated, can weaken the blood vessel walls and lead to a brain hemorrhage.
"One can be treated with Viagra, erythropoietin, or statins days after stroke and there is a significant reduction in neurological deficit and a significant induction of new brain cells," says Dr. Chopp.
Are strokes common side effects of Viagra? No — not by a long shot. For most healthy guys, the most common adverse side effects to worry about with Viagra are headaches, flushing, indigestion, changes in vision, back pain, nausea, dizziness, nasal congestion, rash and muscle pain.
Alone, Viagra did not promote platelet aggregation, but it did so in the presence of a small amount of other compounds typically present when a blood vessel is damaged. In fact, Viagra caused the cells to clump at concentrations well below those achieved in patients prescribed the drug for erectile dysfunction.
There's also no research showing that sildenafil has significant antiplatelet effects (meaning it works to prevent platelets from clumping together and forming a blood clot). In simple terms, brand name Viagra and generic sildenafil don't appear to have any major blood thinning effects.
In general, symptoms of brain bleeds can include: Sudden tingling, weakness, numbness, or paralysis of the face, arm or leg, particularly on one side of the body. Headache. (Sudden, severe “thunderclap” headache occurs with subarachnoid hemorrhage.)
A brain bleed is a serious medical emergency. Someone should call 911 if a person has symptoms of stroke or a bleed on the brain. Recovery is possible, but a person may have complications. Close supervision by a medical professional after treatment can help reduce the risk of complications.
Trauma or a weakening somewhere in this blood vessel network can cause a bleed (haemorrhage). A subarachnoid haemorrhage is any bleed located underneath one of the protective layers of the brain known as the arachnoid layer. A subarachnoid haemorrhage can be fatal if not diagnosed and treated promptly.
Occasionally, you won't feel any initial symptoms. When symptoms of brain hemorrhage appear, they may come as a combination of the following: A sudden and very severe headache. Nausea and vomiting.
Two kinds of brain bleeds
There are spontaneous ones like a ruptured aneurysm or a stroke. And then there are those caused by trauma. “The most common type of brain bleed is traumatic,” Cervantes says. “It is the most common cause of death between ages 4 and 40.
have a serious heart or liver problem. have recently had a stroke, heart attack or a heart problem – your doctor should carefully check whether your heart can take the additional strain of having sex. have low blood pressure (hypotension) have a rare inherited eye disease, such as retinitis pigmentosa.
Viagra is only recommended to be taken once per day. This means that if you're planning on engaging in sexual activity more than once throughout the day, you shouldn't take a pill every time. And if you take a pill and it doesn't work for you — don't double up and take another one.
Are there any long-term side effects? Sildenafil is safe to take for a long time. There do not seem to be any lasting harmful effects from taking it for many months and years.