By Sarah Anne MaysLast Updated: April 25, 2025
Tadalafil, the popular erectile dysfunction drug, is a popular choice among men who want to improve sexual function and satisfaction. Tadalafil, like all medications, can cause side effects, and it’s important to consult a healthcare provider before starting tadalafil.
Tadalafil, the active ingredient in Cialis, is a prescription medication that is available to buy online from pharmacies in several different countries. When you buy Tadalafil online, make sure you check the pharmacy’s physical address and ask that online service customer care department for contact details. Look for the physical address and the contact details shown on the packaging of the medication, which may be unique to the country or region.
Before you start taking tadalafil, make sure to talk to your doctor or pharmacist. Taking tadalafil with meals may help to reduce stomach discomfort or upset stomach. Taking tadalafil with meals may also help to reduce dizziness and fainting. These precautions do not apply to taking tadalafil with alcohol. Tadalafil should not be taken with certain medications. Tadalafil should never be taken more than once a day, and taking it more than three hours before or after a meal may delay the effect of one or both of the medications you’re taking.
You may need to take tadalafil with or without food. Taking tadalafil with food may reduce the absorption of tadalafil. It’s important to avoid heavy meals, fatty meals, and high-fat meals that contain alcohol. Tadalafil should not be taken more than once a day. Tadalafil should not be taken with other medications that may cause drowsiness. You should not take tadalafil if you also take nitrates (e.g., glycotri free nitrates, glyceryl trinitrate, isosorbide dinitrate) or have a history of heart attack, stroke, or high blood pressure. You should also not take tadalafil if you have pulmonary arterial hypertension (PAH).
To buy tadalafil, make sure you check the pharmacy’s physical address and ask that online service customer care department for contact details. Look for the physical address and the contact details shown on the medication packaging. You may also ask that the packaging be unique to the country or region. This may indicate a different drug.
You can buy tadalafil at a reduced cost to your local patients. However, the medication should only be taken as needed, and you should take it regularly to maintain a consistent level in your blood. You should not take tadalafil if you are taking nitrates (e.g., nitroglycerin, isosorbide mononitrate) or guanylate cyclase stimulators (e.g., spina bifida, tadalafil). You should not take tadalafil if you also take alpha-blockers (e.g., doxazosin, tamsulosin) or have a history of heart attack, stroke, or blood pressure problems. Tadalafil should only be taken in accordance with the instructions provided by the healthcare provider, which may include taking it at the same time every day, but at lower doses. Tadalafil should not be taken in combination with other medications that may cause drowsiness. You should not take tadalafil if you also take medications that may cause sleepiness (e.g., sleeping pills, benzodiazepines, antifungals, anti-seizure medicines, anti-bacterial medicines, antibiotics, and anti-anxiety medicines).
To buy tadalafil, make sure you check the pharmacy’s physical address and ask that the online service customer care department for contact details.
You should not take tadalafil if you also take alpha-blockers (e.g., doxazosin, tadalafil) or if you have a history of heart attack, stroke, or blood pressure problems.
1.Nitrates (e.g., nitroglycerin, isosorbide dinitrate): Cialis and nitrates both lower blood pressure. Taking them together can cause a significant and potentially life-threatening drop in blood pressure (hypotension), leading to dizziness, fainting, or even heart attack or stroke. It is contraindicated to use Cialis with nitrates or recreational "poppers" (amyl nitrites).
2.Alpha-blockers (e.g., prazosin, terazosin, tamsulosin): Both Cialis and alpha-blockers relax blood vessels, which can lead to excessive blood pressure reduction when used together. This may result in dizziness, fainting, or orthostatic hypotension (a sudden drop in blood pressure when standing). If needed, your doctor may adjust the dosage or recommend spacing the medications.
3.Other antihypertensive drugs (e.g., atenolol, propranolol, enalapril, lisinopril): Cialis can enhance the blood-pressure-lowering effects of these medications. While this interaction is usually less severe than with nitrates or alpha-blockers, it can still cause dizziness or fainting in sensitive individuals. Close monitoring of blood pressure is recommended.
Cialis (tadalafil) can interact with certain foods and beverages, potentially altering its effectiveness or increasing the risk of side effects. Here are the key drug-food interactions to be aware of:
It is rare for a man to have a full-blown erection during an erection drug trial. In fact, the drug maker Pfizer said that a few more men had a harder erection than men taking a placebo in the study.
The results came in a small, three-month trial that compared the effects of a placebo with the effects of the drug, according to a release from the company.
The drug, known generically as vardenafil, is a prescription drug that is taken daily and has about a half-life of roughly two hours. Levitra, the generic version of Viagra, has a half-life of about 24 hours, the company said. The FDA has approved Levitra for treatment of erectile dysfunction in men.
The drug, a drug that can help patients with impotence, can cause a serious and potentially fatal side effect known as priapism, a painful erection that lasts for hours. It is one of the most common causes of morbidity and mortality in the U. S. A recent study of patients taking one of the drugs found that about 3 percent of men had an erection that lasted for more than three hours. This is the highest rate of priapism among all ED medications.
In fact, the drug’s manufacturer, Pfizer, said that the results were statistically significant, with about one third of the patients taking the drug in the study. The company said that it was pleased that the patients who had an erection that lasted for more than four hours were not affected.
Patients taking the drug will be given a drug-free, non-honed version of a pill they have been prescribed.
“The results show that there is a possibility that this drug may be used to treat the symptoms of erectile dysfunction and in some cases, that a man may be able to have a more natural erection with this drug,” the company said in the release. “We are pleased that patients taking this drug have a better chance of having a successful erection than those taking a placebo.”
Dr. David B. Heveson, who worked on the study, said that he and other researchers have found that there is a “large amount of placebo effect” when taking the drug.
The results were also published in the New England Journal of Medicine in September 2011. The journal found that men who took one of the drugs, vardenafil, experienced a significantly lower rate of an erection than men who took a placebo. This was the only study to find that the drug did not cause an erection that lasted for more than four hours.
A separate study in the journal found that in men taking the drug, the overall rate of erection in these men was 5 percent less than in the placebo group. This is much higher than Viagra’s 8 percent. “The results show that there is a possibility that this drug may be used to treat the symptoms of erectile dysfunction and in some cases, that a man may be able to have a more natural erection with this drug,” Heveson said.
The researchers said that their results were not necessarily backed up by other studies. The FDA approved Levitra for treatment of erectile dysfunction in men in 2003 and for treating the condition in 2006. The drug is available in generic, oral form and is also sometimes sold as a drug sold under the brand name Levitra. Viagra has been available by prescription since 2012.
The FDA will still be deciding whether the drug is to be approved for use in patients with severe erectile dysfunction or to be used off-label for treating erectile dysfunction in men. There is a possible risk of side effects if a drug is taken with the drug.
Vardenafil (generic name: Levitra) is also a prescription drug that is taken daily. A similar drug, sildenafil citrate, is taken daily. This drug is used to treat high blood pressure, angina, and chest pain.Levitra is used as a treatment for erectile dysfunction, but it does not treat high blood pressure.
“Although the FDA approved the drug for the treatment of erectile dysfunction in 1998, there is a possibility that it may be used to treat the condition in men,” the FDA said in the release. “This study showed that there is a possibility that this drug may be used to treat the symptoms of erectile dysfunction and in some cases, that a man may be able to have a more natural erection with this drug.
Erection problems (impotence) are very common, particularly in men over 40.
Most men occasionally fail to get or keep an erection. This is usually due to stress, tiredness, anxiety or drinking too much alcohol, and it’s nothing to worry about.
If it happens more often, it may be caused by physical or emotional problems.
Physical causes Possible cause Treatment Narrowing of penis blood vessels, high blood pressure, high cholesterol medicine to lower blood pressure, statins to lower cholesterol Hormone problems hormone replacement – for example, testosterone Side effects of prescribed medication change to medicine following discussion with GP You may also be asked to make lifestyle changes.
Do lose weight if you’re overweight stop smoking eat a healthy diet exercise daily try to reduce stress and anxiety
Don’t cycle for a while (if you cycle more than 3 hours a week) drink more than 14 units of alcohol a week
Possible side effects
Like all medicines, this medicine can cause side effects, although not everybody gets them. These effects are normally mild to moderate in nature.
If you experience any of the following side effects stop using the medicine and seek medical help immediately:
allergic reactions including rashes (frequency uncommon). chest pain – do not use nitrates but seek immediate medical assistance (frequency uncommon). priapism, a prolonged and possibly painful erection after taking CIALIS (frequency rare). If you have such an erection, which lasts continuously for more than 4 hours you should contact a doctor immediately. sudden loss of vision (frequency rare). Other side effects have been reported:
Common (seen in 1 to 10 in every 100 patients)
headache, back pain, muscle aches, pain in arms and legs, facial flushing, nasal congestion, and indigestion. Uncommon (seen in 1 to 10 in every 1,000 patients)
dizziness, stomach ache, feeling sick, being sick (vomiting), reflux, blurred vision, eye pain, difficulty in breathing, presence of blood in urine, prolonged erection, pounding heartbeat sensation, a fast heart rate, high blood pressure, low blood pressure, nose bleeds, ringing in the ears, swelling of the hands, feet or ankles and feeling tired. Rare (seen in 1 to 10 in every 10,000 patients)
fainting, seizures and passing memory loss, swelling of the eyelids, red eyes, sudden decrease or loss of hearing, hives (itchy red welts on the surface of the skin), penile bleeding, presence of blood in semen and increased sweating. Heart attack and stroke have also been reported rarely in men taking CIALIS. Most of these men had known heart problems before taking this medicine.
Partial, temporary, or permanent decrease or loss of vision in one or both eyes has been rarely reported.
Cialis (tadalafil) is a phosphodiesterase-5 inhibitor.
Stade de France Pharmacy