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Cialis Interactions

Cialis Interactions: A Urologist’s Guide

Written By-james Martin  Pharmacologist (M.Pharm)
 • Published: 26/03/2026
• Updated: 26/03/2026
Medically Reviewed by Dr. Aditya Shah
Dr. Aditya Shah
Trusted Source

Dr. Aditya Shah

Expert In Clinical Pharmacology And Drug SafetyView more

Among the different major ingredients that work for Erectile Dysfunction (ED), a type of impotency in men, tadalafil is the most significant one. And Cialis is the branded drug under the FDA containing Tadalafil.

US Brand Name:
  • Adcirca
  • Chewtadzy
  • Cialis

You are here to know the major interactions of Cialis, and that too according to the view of a urologist. We will definitely tell you so, but starting all these suddenly will not be able to give you a proper idea of the interactions.

Interactions, when you have the idea of that, you will be able to know how to be safe while taking the drug. Hence, before going there, know what the drug is, what treatment the drug provides, and how the treatment is provided. Then we will go to the interactions. You will find that understanding became easy then.

There Is A Cialis Product Available For Purchase:

Vidalista 20 Mg

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Price range: $83.00 through $400.00
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Vidalista 40 Mg

Vidalista 40 Mg

Price range: $94.00 through $476.00
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Vidalista 60 Mg

Vidalista 60 Mg

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What Disease Does Cialis Treat?


Cialis is recommended by doctors for the primary purpose of treating ED. ED is the condition of impotency in men, where they miss out the erection at the time of sexual activity. Now this happens for several reasons, but what actually happens is the reduction of blood flow to the penis, for which men cannot obtain the erection.

During a sexual encounter, sensation in men widens the blood vessels and allows more blood to flow into the penis. More the blood flow to the tip of the penis, more the erection. However, when men experience ED, blood vessels won’t widen and as a result, they cannot get an erection.

The reason for such a happening is most often fingered to the enzyme called PDE5. This liver-secreted enzyme reduces the cGMP in blood and therefore, the widening of the blood vessels is restricted.

Cialis or the generic version of the same, named as Vidalista 60 (also available in other dosage strengths), inhibits the enzyme and allows the cGMP to reach the best level to widen the vessels and induce more blood to the penis. And this is the mechanism of Tadalafil to treat Erectile Dysfunction.

Cialis Interaction Classification:

🔴 Major:
Avoid combining these medications because the risk of severe side effects may outweigh the benefits.

🟠 Moderate:
These combinations should only be used under medical supervision.

🟡 Minor:
These interactions generally present low risk but should still be monitored.


The Interactions Of Cialis:


Now that you know the mechanism of Vidalista 40, it is time to watch out for the interactions of the drug and remain safe from them. Avoiding the interactions and managing the same will give you the best results while taking the drug and will also direct you when to use the drug, how to use the drug, and when not to use it.

Coming to the interactions, Cialis interactions with other drugs, with some other diseases, and also with some food elements.

Advice

Take Cialis as prescribed by your doctor, and be sure to inform them if you are taking any other medications. Cialis should be taken with moderation while alcohol is being consumed to prevent dizziness and fainting.

⮞ Interaction With Other Drugs:

Here are the major drug interactions of Cialis, according to a Urologist:

  • Drugs You Must Never Take With Cialis:

Nitrates are the drugs that are usually used in the treatment of angina, a heart disorder where the heart condition deteriorates when there is no adequate oxygen supply. Such drugs, which are usually isosorbides, interact with tadalafil the most, and they can even cause a condition for the patient, where he can face a heart attack or a stroke. Therefore, in no way should a patient taking nitrates take tadalafil.

  • Drugs That Cause An Overdose Of Cialis:

Antidepressants, some antibiotics like erythromycin, are the drugs that cause overdose on Vidalista 20. If you need to take these drugs together with Tadalafil, consult with your doctor and get the right dose for both drugs. A dosage administration is essential as otherwise, severe side effects like priapism, shortage of breath, liver disorder, or a chronic back pain might result in the patient.

  • Drugs That Cause Issues:

Blood thinners and other blood pressure reducers interact with Tadalafil to cause downfall of blood pressure to such a level that you can even experience fainting. These drugs can be dangerous when you take them with Cialis and without consulting your doctor. More than the dosage adjustment, here the need is to change the timing of taking both medicines.

⮞ Interaction With Other Diseases:

Interaction With Other Diseases

Cialis interacts with other diseases and influences them as well. Here are the major such interactions:

Interaction with heart disorders: A heart patient, especially a severe heart patient, must not take Tadalafil. Tadalafil can be severe for them and can cause a heart attack or a stroke in several cases.

Interaction with Liver and Kidney: Since tadalafil starts its work in your liver by inhibiting a liver-secreted enzyme, severe liver disorder, if you have such a thing, can be chronic for you, interacting with Cialis. Kidney condition is related to urination, and the narrowing down of blood vessels also affects it a lot. You will see such serious effects during kidney dialysis mostly.

Interaction with retinal disorder: Cialis affects your vision for the lowering of blood pressure. In such conditions, if you have glaucoma or other retinal issues, the condition can be even more critical for you.

⮞ Interaction With Food:

Vidalista 20 also interacts with some foods. Though it won’t cause any serious ailments, yet at some conditions, the case can be fatal. Here are the major interactions:

Interaction with alcohol: Alcohol causes dizziness and so does grapefruit. Cialis also causes the same. Hence, when you take both of them, interaction can cause serious dizziness.

Interaction with bulky food: Taking the drug on an empty stomach influences nausea. On the other hand, taking bulky meals delays the action of the drug. Hence, stay away from bulky meals at the time of taking the pill.


FAQs:


Q. How Fast Does Cialis Start Working?

Cialis starts working within 15 to 20 minutes of taking the pill. Take low-carb meals for fast action.

Q. How Long Will I Get An Erection With The Drug?

You can get 4-6 hours of erection with Cialis. However, that depends on the sexual stimulation.

Q. How Long Does It Remain In The Blood?

It remains in your blood for approximately 36 hours. However, the generic version with lesser strength makes it feeble from the end of 24 hours.

Q. When To Take The Pill?

Take the pill 30 minutes before your sexual activity for the best action. Always take it with a light meal. Never take alcohol with Cialis.

james Martin

Dr. james Martin

Pharmacologist (M.Pharm)

Hello Everyone, Today, I would Like to Talk about my self, I am Dr. James Martin. I have highly qualify for Certification to become a Sex therapist with obtain an advanced degree from an Accredited University At California . Expert In Sex Therapist and psychologist. Additionally, I have doctorate and...
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