Tadalafil: Uses, Dosage, Side effects


Tadalafil is a prescription drug, usually found as tablets. These tablets have a variety of uses, starting from treating the symptoms of erectile dysfunction to alleviating the distress caused by pulmonary hypertension.

Common brand names of Tadalafil are Cialis and Adcirca. This drug comes in various strengths customized to treat specific conditions. It is taken orally with water, before or after food, depending on the health expert’s orders.

Uses of Tadalafil

This prescription drug is usually used to alleviate symptoms of male sexual malfunctioning. Tadalafil helps in increasing the blood flow to the penis so that the individual can develop an erection and maintain it. It is to be noted that Tadalafil does not provide any protection against sexually transmitted diseases and the use of protection like condoms is advised.

Often, it is also used to treat prostatic conditions like BPH. This condition results in symptoms like a weak stream while urinating, difficulty in starting to urinate, or regular trips to the bathroom, especially in the middle of the night. Here, this drug aids in relaxing the muscles of the prostate and bladder, thereby resolving the majority of the difficulties involving urination.

Tadalafil is also effective in treating pulmonary arterial hypertension (PAH). The condition is characterized by increased tension in the arteries carrying blood to the lungs. Here, the drug helps in relaxing and dilating the blood vessels to lower the pressure. This way, the blood flow to the lungs increases, and the patient’s discomfort is alleviated.


This prescription drug has a specific dose depending on the symptom that it treats. Nonetheless, remember to follow the doctor’s instructions on using the drug, the specified time gap between doses, and the duration of the prescription. Below are the things one should keep in mind about the Tadalafil dosage.

  • For BPH, a daily dosage is recommended. Take 5mg of Tadalafil every day at a regular time for best results.
  • In the case of impotency, there are two recommended dosages. Consult with the physician to select the best course of treatment. For some individuals, the daily use of 2.5mg of Tadalafil without considering the period of sexual activity is advised. Daily consumption of the drug at the same time without fail is advised in this situation. Another way is to take the tablet as needed, thirty minutes before the sexual activity. Here, the individual is advised to take a singular dose of 10mg Tadalafil.
  • To provide relief from both ED and BPH, the patient is advised to take 5mg of the drug daily even if they have no plans for sexual activity.
  • In the case of PAH, adults are recommended to take 40mg of Tadalafil. Note that this dose should not be split and the entire dose must be taken at a fixed time.

In certain cases where children need to use this drug, make sure that the dosage and use are determined by the doctor. Moreover, the health expert can change the above-mentioned doses according to each individual’s need.

Side Effects of Tadalafil

Like any other drug, Tadalafil can induce side effects in certain individuals. It is to be noted that only a select few from the population show any side effects after Tadalafil.

Some of the minor and more common side effects are:

  • Nausea
  • Aching muscles
  • Troubles with digestion
  • Headaches
  • Flushed face
  • Stuffy nose
  • Nosebleeds
  • Ringing sensation
  • Dizziness or lightheadedness

If these symptoms persist after the administration of the drug, consult with a healthcare expert immediately.

With the change in dosage, the side effects that show up are also different. The serious side effects that appear after the consumption of Tadalafil are:

  • Extreme pain in the chest region is a serious side effect that has more chances to appear in the body systems that are often exposed to nitrates. If this pain occurs during the intercourse or after, try to get into a sitting position and relax.
  • Another major side effect of Tadalafil is prolonged erections. Sometimes they can be painful and if it lasts for more than 4 hours, contact a doctor to avoid permanent damage.
  • If any sudden symptoms appear in the vision and hearing of the person, call a doctor without delay.
  • In some individuals, the reaction to Tadalafil is severe skin rashes or hives. Some people report the swelling of the face or swelling around the eyes.
  • Even though rare, another serious side effect of Tadalafil is the appearance of seizures or fits.
  • In some extremely rare situations, the side effect of Tadalafil can be similar to a serious allergic reaction. It may include wheezing, tightness in the throat, blistered or peeling skin, swelling of the mouth and throat, or trouble in breathing.


  • Before administering any drug, be sure to inform the pharmacist or the healthcare expert about allergies, if any.
  • If the patient has a history of heart disease, then the administration of the drug should be done only after doing the necessary tests. This is because the presence of nitrates in certain heart medications interact negatively with Tadalafil.
  • ED is an early indication of Heart disease so patients with a history of stroke, liver malfunction, renal diseases, or problems related to blood pressure should only take this drug after consultation with a doctor.
  • Individuals with conditions related to the penis, like angulation, fibrosis, Peyronie’s disease, or with a history of painful erections should get clearance from a doctor before using this drug.
  • Since Tadalafil induces dizziness in some individuals, using cannabis or alcohol while Tadalafil is present in the system is highly unadvised. Owing to the dizziness induced after taking this drug, operating heavy machinery after administering is discouraged.
  • Tadalafil should only be used by pregnant individuals when the situation is dire. Never otherwise.
  • It is not recommended to administer Tadalafil to children.
  • It is emphasized that this prescription drug should not be administered to patients who take medication for heart diseases. Nitrates are a common ingredient in these drugs and it interacts badly with Tadalafil.
  • Also, it is advised to stay away from grapefruit juice during the prescription period of this drug.
  • Vitamin supplements should be regulated while consuming Tadalafil to prevent accidents.
  • Other prescription drugs like Xanax and Viagra interact and affect the potency of Tadalafil, therefore only mix these drugs after consulting with a physician.


Tadalafil is an extremely efficient drug in treating various conditions like ED, BPH, and PAH. For best results, it is recommended to follow the health expert’s instructions and the guidelines given in the pamphlet. Remember, the potency of the drug is maintained when it is stored in a cool, dry place away from sunlight.

Remember to keep the drugs out of the reach of children as well as pets. Do not mix the prescription drug with other substances. In case of overdose, call the emergency services or poison control center and rush to the hospital immediately.