Generic Cialis Soft

Common use

Cialis Soft improves erection and lets achieve a successful sexual intercourse. If sexual arousal is present the effect appears even after 16 minutes after the medication was taken and lasts for 36 hours so a patient may choose which times suits him the best to take Cialis making several attempts of sexual action during the indicated time.



Dosage and direction

Take it orally once a day with or without food, the recommended dose is 20 mg should be taken at least 16 minutes before your sexual intercourse.



Precautions

It is preferable not to use Cialis with grapefruit juice, alcoholic beverages, tobacco. If you smoke tobacco and take Cialis concomitantly this may lead to a condition called NAION (sudden optic nerve-related vision loss). Inform your doctor before to take Cialis if you have abnormal penis, including curved penis and birth defects of the penis, had coronary artery disease, arrhythmia, angina, heart attack or heart failure, hypo- or hypertension, bleeding, stomach ulcers, diabetes, hyperlipidemia (excess of lipids in the blood), sickle-cell anemia, liver or kidney failure in history.



Contraindications

Cialis is contraindicated in patients who are using any form of organic nitrate, either regularly and/ or intermittently as it is able to potentiate their hypotensive effect.



Possible side effects

Most usual side effects of Cialis are facial flushing (reddening), headaches, stomach upset, diarrhea, flu-like symptoms and nausea. In more rare cases low blood pressure, blurred vision and changes in color vision, and abnormal ejaculation may occur. Prolonged erections or priapism (painful erections lasting more than 6 hours) are also possible. If your erection is longer than 4 hours, seek for immediate medical help as it may permanently damage your penis. Aggravation of heart problems in patients with pre-existing heart disease using Cialis was reported.



Drug interactions

Co-administration with medications containing organic nitrates may cause severe hypotension which is dangerous in some cases. Avoid taking Calis with medications such as Erythrityl Tetranitrate, Isosorbide Dinitrate, Isosorbide Mononitrate, Nitroglycerin, Pentaerythritol Tetranitrate. Levels and toxicity of Cialis are increased by erythromycin, ketoconazole (Nizoral), itraconazole (Sporanox), indinavir (Crixivan) and ritonavir (Norvir). Inform your doctor if you are taking Atazanavir, Bunazosin, Clarithromycin, Doxazosin, Erythromycin, Indinavir, Itraconazole, Ketoconazole, Moxisylyte, Nefazodone, Nelfinavir, Phenoxybenzamine, Phentolamine, Prazosin, Saquinavir, Telithromycin, Terazosin, Trimazosin, Urapidil as your Cialis dose may require correction.



Missed dose

Missed dose is not supposed if Cialis is taken for treatment of erectile dysfunction as it s used when needed.



Overdose

Overdose of Cialis causes symptoms described in Side effects. Seek for immediate medical help if you believe that took too much of this medication.



Storage

Store at room temperature away from moisture, sunlight, kids and pets in a tight container.



Disclaimer

We provide only general information about medications which does not cover all directions, possible drug integrations, or precautions. Information at the site cannot be used for self-treatment and self-diagnosis. Any specific instructions for a particular patient should be agreed with your health care adviser or doctor in charge of the case. We disclaim reliability of this information and mistakes it could contain. We are not responsible for any direct, indirect, special or other indirect damage as a result of any use of the information on this site and also for consequences of self-treatment.

Clinical Verification

Last Clinically Updated: August 15, 2026

Written By

Dr. Elena Vance, PharmD

Clinical Specialist in Neuropharmacology

Fact Checked By

Marcus Thorne, MS

Biomedical Data & FDA Label Verification

Medically Reviewed By

Dr. Arthur Campbell, MD

Board-Certified Psychiatrist (ABPN)