Cialis 20mg | Online Pharmacy

Generic Cialis 20mg

Generic Cialis (Tadalafil) is a medication that is used to treat erectile dysfunction in men. It helps to improve blood flow to the penis and thereby helps to achieve and maintain an erection.

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Generic Cialis 10mg $ 0.98 per pill
Generic Cialis 20mg $ 1.08 per pill
Generic Cialis 40mg $ 1.27 per pill
Generic Cialis 60mg $ 1.32 per pill


Mechanism of action

Tadalafil belongs to the group of phosphodiesterase type 5 inhibitors (PDE-5). It blocks the action of the enzyme PDE-5, which destroys cyclic guanosine monophosphate (cGMP). As a result, cGMP accumulates in the cavernous bodies of the penis, which leads to relaxation of smooth muscles and increased blood flow to the penis.

Indications for use

Tadalafil is indicated for the treatment of erectile dysfunction in men aged 18 years and older.


Tadalafil is contraindicated in the following conditions:

* hypersensitivity to tadalafil or any other component of the drug;
* simultaneous administration of drugs containing any organic nitrates;
* children and adolescents under 18 years of age;
* contraindications to sexual activity in patients with diseases of the cardiovascular system, such as unstable angina pectoris or severe heart failure.

Before taking the drug, it is necessary to consult a doctor.

Side effects

The most common side effects of tadalafil are headache, dyspepsia (digestive disorder), back pain, myalgia (muscle pain), nasal congestion.

More information about tadalafil can be found in the following sources:

1. The American Urological Association (AUA) is a professional association of urologists in the United States. On the association's website, you can find information about tadalafil and other drugs for the treatment of erectile dysfunction.

2. The Food and Drug Administration (FDA) is an agency of the U.S. Department of Health and Human Services. Information on the safety and effectiveness of tadalafil can be found on the agency's website.

3. The National Institutes of Health (NIH) is an agency of the U.S. Department of Health and Human Services that conducts research in the field of health and medicine. Scientific articles about tadalafil can be found on the agency's website.

4. The Mayo Clinic is a non—profit medical center located in Rochester, Minnesota.

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Hours of Operation (By appointment only)

Our Regular Schedule


Kahului office 8 AM - 12 PM

Kahului office 1 PM - 5 PM


9:00 am-12:00 pm

1:00 pm-5:00 pm


Kahului office 8 AM - 12 PM

Kahului office 1 PM - 5 PM


9:00 am-12:00 pm

1:00 pm-5:00 pm


Kahului Office 9 am - 12 pm

Kahului Office 1 pm - 5 pm






Happy Parents

    "I was so impressed with Dr. Irene Papaconstadopolous. Everything is at her practice is streamlined and organized. Paperwork all sent beforehand in an easy to use digital format. Communication was clear and office easy to access. Went for our 18 month old’s check up and it was the most time I have ever been able to spend with a doctor! She even administered the vaccines. She was thorough, friendly, and creative in approach to making my toddler comfortable and engaged. So happy to have a competent, friendly, organized, and WONDERFUL pediatrician on Maui. Such a blessing. Mahalo!"

    Nicole B. Google reviews March, 2022

    Dr. Irene is the kind of doctor United States badly need more of. I took my child to see her for a hard to troubleshoot chronic issue, and I was very surprised that instead of typical in the US approach of prescribing a medicine to treat the symptom and get you out of the door, she took the time to understand medical history, went over each possibility what could have been causing the issue, and proposed a few possible follow-ups how to zero in to the root cause. Her advice was very helpful and produced positive results. I highly recommend Dr. Irene Papaconstadopoulos.

    S.D via google reviews

    "I can’t express how grateful I am, as a mother of two young children, to have found such a wonderful pediatrician. Dr. Irene is knowledgeable, accessible, and above all, great with kids! Even though my girls have had to be poked and prodded on occasion, they still love Dr. Irene so much that they get excited to see her again - and that’s saying a lot. If you are looking for a pediatrician who you can trust with your children’s health, who can answer your questions, who gets back to you quickly, and who herself is an amazing mother, then you’ve found her! I’m so glad we have. ❤️"

    K.F. 2020 via Google reviews

    We love Dr. Irene with CHAMPS Pediatrics! My two daughters have been seeing her since 2018 and we trust her completely. She's extremely warm, understanding and takes her time to explain and answer any questions that you may have as parents. She is extremely fast with the text replies through the online portal (klara) as well, which is great for those forgotten questions in between visits. Dr. Irene is super sweet and efficient and truly cares about your experience and the welfare of your children. HIGHLY recommended!

    J.P 2020 via Google reviews

    "Dr. Irene is the most caring, gentle, genuine Pediatrician. She is so kind and loving with my boys. She makes them feel so comfortable and they are even excited when we have an appt! She was so quick to respond on the Klara App to communicate with me even during a holiday weekend and answer my questions about my son. She takes time to go over everything and answer all my questions and concerns, every time we've met with her. I've never felt rushed. I highly recommend her! She's been so great caring for my family. I feel so blessed to have been referred to her!! Thank you Dr. Irene, for caring for my kids!"

    Tammy M. via Yelp

    "Dr. Irene is amazing! She really listens to you and your concerns, and takes the time to address them. She is so gentle and kind with my kids! She has definitely exceeded our expectations! I’m positive that my kids are having the best care on island. We love her and we are so happy that she joined our Maui community!"  via Google reviews

    Sueshine R.

    "Dr. Irene is amazing. She is caring, gentle, truly listens and graciously worked with us and our children to provide the best medical care. Highly recommend!!!"