Cialis Dosage Guide: How Much to Take and When (With Chart)
Key TakeawaysCialis (tadalafil) is used primarily to treat erectile dysfunction and symptoms of benign prostatic hyperplasia.Dosage varies based on treatment goals, ranging [...]
Read MoreCialis Dosage Guide: How Much to Take and When (With Chart)
Medically reviewed by Alan Lucks | MD, Alan Lucks MDPC Private Practice - New York on December 10th, 2025.
Key Takeaways
Cialis (tadalafil) is used primarily to treat erectile dysfunction and symptoms of benign prostatic hyperplasia.
Dosage varies based on treatment goals, ranging from daily low-dose to higher doses taken as needed.
Typical adult doses range from 2.5 mg to 20 mg, with adjustments made for individual health conditions.
It is important to follow prescribed doses and consult a healthcare provider for personalized guidance.
Doctronic.ai offers personalized telehealth consultations to help determine the right Cialis dosage for you.
Understanding Cialis Uses and Dosages
Cialis, known generically as tadalafil, is a popular medication used to treat erectile dysfunction (ED) and benign prostatic hyperplasia (BPH). Understanding the proper dosage is critical for safety and effectiveness. Whether you’re considering Cialis for the first time or adjusting your dose, knowing how much to take and when can make a big difference in your results.
This guide breaks down typical dosing schedules, how to adjust doses for specific conditions, and tips for safe use. Plus, it highlights how Doctronic.ai can help you get personalized advice from licensed doctors without leaving home.
Cialis Dosage Chart
Form |
Strength |
Typical Adult Dose |
Typical Children’s Dose |
Frequency |
Route |
Maximum Daily Dose |
|---|---|---|---|---|---|---|
Tablet |
2.5 mg |
2.5 mg once daily |
Not approved for children |
Once daily |
Oral |
2.5 mg daily |
Tablet |
5 mg |
5 mg once daily |
Not approved for children |
Once daily |
Oral |
5 mg daily |
Tablet |
10 mg |
10 mg as needed |
Not approved for children |
As needed, before sexual activity |
Oral |
20 mg per dose, max once daily |
Tablet |
20 mg |
20 mg as needed |
Not approved for children |
As needed, before sexual activity |
Oral |
20 mg per dose, max once daily |
Cialis Dosage by Condition
Erectile Dysfunction (ED) Dosages
For ED, Cialis can be taken either daily or on an as-needed basis. The daily dose is typically 2.5 mg or 5 mg, which allows for more spontaneous sexual activity. If taken as needed, doses usually start at 10 mg, taken at least 30 minutes before sexual activity. Depending on effectiveness and tolerability, the dose can be adjusted to 20 mg or lowered to 5 mg.
Benign Prostatic Hyperplasia (BPH) Dosages
When treating BPH, Cialis is usually prescribed at 5 mg once daily. This helps relieve urinary symptoms such as difficulty starting urination or frequent urination. The medication works by relaxing the muscles in the prostate and bladder.
Combined ED and BPH Treatment
For men experiencing both ED and BPH, a daily dose of 5 mg Cialis is commonly recommended. This dosage balances symptom relief for both conditions effectively.
What is the Typical Cialis Dose For Adults?
Adults typically start with a dose of 10 mg taken prior to anticipated sexual activity. If this dose is not effective or causes side effects, doctors may adjust it. For daily use, lower doses such as 2.5 mg or 5 mg are preferred to maintain readiness without planning ahead.
It is important to never exceed one dose per day. Taking more than 20 mg in 24 hours can increase the risk of adverse effects such as headaches, dizziness, or more serious cardiovascular events.
What is the Typical Cialis Dose For Children?
Cialis is not approved for use in children or adolescents. Its safety and effectiveness have not been established in this population.
What to Do If You Miss a Dose of Cialis?
If you are taking Cialis daily and miss a dose, take it as soon as you remember. However, if it is almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not double up doses to catch up.
For as-needed dosing, simply take the medication before your next planned sexual activity. There is no need to take missed doses outside of this context.
How to Adjust Your Cialis Dose For Certain Medical Conditions
Kidney Impairment Adjustment
Patients with moderate-to-severe kidney disease should start at a lower dose, often 2.5 mg daily, and use caution. The medication is cleared more slowly in these individuals, increasing the risk of side effects.
Liver Impairment Adjustment
For those with liver problems, a lower starting dose is also recommended. Close monitoring by a healthcare provider is important to ensure safety.
Cialis Overdose and Warnings
An overdose of Cialis can cause serious side effects, including chest pain, severe dizziness, or prolonged erections lasting more than 4 hours (priapism). Seek emergency medical care immediately if these occur.
Do not take Cialis if you are using nitrates for chest pain, as this combination can cause dangerous drops in blood pressure. Inform your doctor about all medications and supplements you use before starting Cialis.
Tips For Taking Cialis Safely
Take Cialis exactly as prescribed by your healthcare provider.
Avoid alcohol and grapefruit products, which can increase side effects.
Store the medication at room temperature, away from moisture and heat.
Report any unusual side effects or allergic reactions to your doctor immediately.
Use Doctronic.ai to connect with licensed physicians who can tailor your dosage and provide ongoing support.
Learn More About Cialis Dosage With Doctronic
Getting the correct Cialis dosage is not a one-size-fits-all approach. Factors like your overall health, other medications, and specific symptoms all play a role. Doctronic.ai offers a modern way to get personalized medical advice quickly and conveniently. Their AI-powered platform synthesizes the latest medical research and connects you with real doctors who understand your unique needs.
Whether you have questions about dosing schedules, side effects, or drug interactions, Doctronic.ai provides expert guidance 24/7, all from the comfort of your home. Visit Doctronic.ai to start your consultation and get the most personalized care available.
The Bottom Line About Cialis Dosages
Cialis is a powerful medication that can improve the quality of life for many men dealing with erectile dysfunction and prostate issues. Understanding how much to take and when is essential for maximizing benefits while minimizing risks. Always follow your healthcare provider’s instructions and never hesitate to seek professional advice if you have questions or concerns.
For personalized, up-to-date medical information and telehealth consultations, Doctronic.ai is a trusted resource that combines cutting-edge AI with compassionate care. This approach ensures you get the safest, smartest, and most personal treatment possible.
Frequently Asked Questions
Yes, Cialis is approved for daily use at low doses (2.5 mg or 5 mg) to allow for spontaneous sexual activity. Higher doses are typically taken as needed.
When taken as needed, Cialis should be taken at least 30 minutes before sexual activity. Its effects can last up to 36 hours.
Some medications, especially nitrates and certain blood pressure drugs, can interact dangerously with Cialis. Always inform your doctor about all medications you are taking.
Mild side effects often resolve on their own. If you experience severe symptoms like chest pain, sudden vision loss, or an erection lasting more than 4 hours, seek emergency medical help immediately.
Absolutely. Doctronic.ai offers personalized telehealth consultations where licensed doctors can review your health history and provide tailored dosing recommendations.