Common Use

Brand Cialis is a medication developed by the pharmaceutical company LILLY, with Tadalafil as its active ingredient. Cialis is a potent, reversible, and selective inhibitor of phosphodiesterase type 5 (PDE 5), which is specific to cyclic guanosine monophosphate (cGMP). During sexual stimulation, nitric oxide is released locally, and the inhibition of PDE 5 by Cialis increases cGMP levels in the cavernous body of the penis. This process relaxes the smooth muscles in the arteries, enhancing blood flow to the penile tissues and resulting in an erection. Cialis is effective only in the presence of sexual stimulation. The medication improves erectile function and facilitates successful sexual intercourse. Its effects last up to 36 hours, and the onset of action can occur as quickly as 16 minutes after taking the drug.

Dosage and Direction

The recommended dosage of Cialis is 20 mg, which should be taken at least 16 minutes before sexual activity. The effects can last for up to 36 hours. Cialis should be taken once daily, and it is important not to exceed the recommended dose.

Precautions

It is advisable to avoid consuming Cialis with grapefruit juice, alcoholic beverages, or tobacco. Combining Cialis with tobacco may increase the risk of NAION (sudden optic nerve-related vision loss). Before taking Cialis, inform your doctor if you have any of the following conditions:

• Abnormal penis shape, including curvature or birth defects
• History of coronary artery disease, arrhythmia, angina, heart attack, or heart failure
• Hypotension or hypertension
• Bleeding disorders, stomach ulcers, diabetes, or hyperlipidemia (excess lipids in the blood)
• Sickle-cell anemia
• Liver or kidney dysfunction

Contraindications

Cialis is contraindicated for individuals using any form of organic nitrate (regularly or intermittently) as it can amplify the hypotensive effects of nitrates.

Possible Side Effects

The most common side effects of Cialis include:

• Facial flushing (redness)
• Headaches
• Stomach upset
• Diarrhea
• Flu-like symptoms
• Nausea

In rare cases, the following may occur:

• Low blood pressure
• Blurred vision or changes in color vision
• Abnormal ejaculation
• Prolonged erections or priapism (painful erections lasting more than 6 hours)

If an erection lasts longer than 4 hours, seek immediate medical attention to avoid permanent damage to the penis. Cialis may also worsen heart conditions in patients with pre-existing heart disease.

Drug Interactions

Cialis should not be taken with medications containing organic nitrates, as this can cause severe and potentially dangerous hypotension. Avoid combining Cialis with the following medications:

• Erythrityl Tetranitrate
• Isosorbide Dinitrate
• Isosorbide Mononitrate
• Nitroglycerin
• Pentaerythritol Tetranitrate

Additionally, the levels and toxicity of Cialis may increase when taken with medications such as:

• Erythromycin
• Ketoconazole (Nizoral)
• Itraconazole (Sporanox)
• Indinavir (Crixivan)
• Ritonavir (Norvir)

Inform your doctor if you are taking any of the following, as your Cialis dosage may need adjustment:

• Atazanavir, Bunazosin, Clarithromycin, Doxazosin, Moxisylyte
• Nefazodone, Nelfinavir, Phenoxybenzamine, Phentolamine, Prazosin
• Saquinavir, Telithromycin, Terazosin, Trimazosin, Urapidil

Missed Dose

Since Cialis is taken as needed for erectile dysfunction, there is no concern about missing a dose.

Overdose

An overdose of Cialis may result in symptoms similar to its side effects. If you suspect an overdose, seek immediate medical assistance.

Storage

Store Cialis at room temperature in a tightly sealed container, away from moisture, sunlight, children, and pets.

Disclaimer

The information provided here is for general guidance and does not cover all directions, possible drug interactions, or precautions. It should not be used for self-diagnosis or self-treatment. Always consult your healthcare provider or doctor for personalized advice. We disclaim any liability for the accuracy of this information or any damages resulting from its use or self-treatment.