Is Low-Dose Daily Cialis/Tadalafil Effective in Treating Erectile Dysfunction/ED?
If your doctor prescribes Cialis to treat ED along with BPH symptoms, you’ll take Cialis once per day. For this use, the usual dosage is 5 mg per day.
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The unbranded, generic version is Tadalafil 2.5mg which once again is usually at a lower price point. But your physician can increase or decrease your dose based on your response to the treatment. This is to keep the risk of side effects low — your doctor will aim for the lowest dose possible to get the job done. (Which is 2.5mg for ‘daily’ use, and 10mg for ‘on-demand’ use. If your ‘on-demand’ dose doesn’t work well enough, your clinician may increase it to 20mg.
If I take 5 milligrams (mg) of Cialis daily, how long does it take the drug to work?
And similarly, if your daily dose of 2.5mg isn’t working as well as you’d like, it can then be increased to 5mg. If you experience side effects on Cialis, let your doctor or pharmacist know. They’ll suggest either lowering your dose or recommend an alternative ED treatment. To minimize the risk of side effects avoid grapefruit, drinking too much alcohol, and do not take more than one dose of Cialis per day. If you aren’t seeing the results you want on Cialis Daily 2.5mg, and don’t experience side effects, your prescriber may recommend upping your dose to Cialis 5mg daily.
What happens if I take too much Cialis?
It should be equally as effective at treating ED as Cialis. There is no Cialis 40mg or Tadalafil 40mg available in the US. A tadalafil dosage of 40mg is used to treat pulmonary arterial hypertension, but this is under careful medical supervision. Doses higher than 20mg have a higher risk of side effects and can dangerously affect blood pressure. One such side effect, priapism, is an erection that lasts more than 4 hours and requires immediate medical attention. You should not take any additional doses of Cialis for occasional use before sexual activity. If you have certain kidney problems or liver problems, your doctor may prescribe a lower dosage of Cialis for you. This is because with your condition, the usual dosage may raise your risk of side effects from the drug.
| Product | Dosage | Quantity + Bonus | Price | |
|---|---|---|---|---|
| Cialis Generic | 10mg | 60 + 6 Pills | 105.81€ 100.77€ | |
| Cialis Super Active | 20mg | 20 + 4 Pills | 92.35€ 87.95€ | |
| Cialis Professional | 20mg | 90 + 2 Pills | 241.49€ 229.99€ | |
| Cialis Original | 20mg | 4 Pills | 41.99€ 39.99€ | |
| Cialis Generic | 10mg | 180 + 8 Pills | 236.88€ 225.60€ | |
| Cialis Professional | 20mg | 60 + 2 Pills | 183.83€ 175.08€ | |
| Cialis Original | 20mg | 120 + 8 Pills | 497.29€ 473.61€ | |
| Cialis Super Active | 20mg | 30 + 6 Pills | 128.09€ 121.99€ | |
| Cialis Original | 20mg | 76 + 4 Pills | 319.19€ 303.99€ | |
| Cialis Generic | 5mg | 10 Pills | 29.39€ 27.99€ | |
| Cialis Generic | 2.5mg | 360 + 10 Pills | 260.03€ 247.65€ | |
| Cialis Generic | 40mg | 90 + 6 Pills | 171.35€ 163.19€ | |
| Cialis Super Active | 20mg | 90 + 10 Pills | 314.14€ 299.18€ | |
| Cialis Generic | 20mg | 180 + 10 Pills | 254.09€ 241.99€ | |
| Cialis Generic | 20mg | 60 + 6 Pills | 117.76€ 112.15€ |
Depending on how severe your kidney or liver problems are, your doctor may recommend occasional dosing instead of daily dosing to treat ED.
Cialis online appointment pricing details
You’ll likely take one 10-mg tablet before sexual activity. Depending on how well the 10-mg dose works for your ED, your doctor may adjust your dose. It may be decreased to 5 mg or increased to 20 mg. You’ll continue to take it only as needed before sexual activity. You should not take Cialis more than once per day. You’ll take Cialis by swallowing it, either once per day or occasionally (as needed before sexual activity). The Cialis tablet should be swallowed whole.
Cialis prescription resources
At your consultation, make sure you give your doctor your full medical history. This will help them make the best initial decision about your erectile dysfunction treatment. Once you begin treatment, keep an eye out for any side effects and let your prescriber know if they occur. Whilst it’s important you give your prescribed dose a few tries, it should ultimately offer you the results you want. If this isn’t the case, again, let your clinician know.
More common
Getting the best results when you take Cialis is the end goal. Always follow the instructions in the leaflet or on the pack and any specific guidance given to you by your doctor. If you’re taking Cialis as needed, remember to give it enough time to work. Results aren’t instant, so aim for no less than 30 minutes before sex — longer if possible. Avoiding mixing Cialis with nitrates, such as isosorbide mononitrate or GTN spray.
Cialis and alcohol: how to use Cialis safely
These cause a drop in blood pressure, which can be dangerous and never take double doses or split doses. 2004.The efficacy and safety of tadalafil: an update. Tadalafil administered once daily for lower urinary tract symptoms secondary to benign prostatic hyperplasia: A dose finding study. The Journal of Urology, 180(4), 1228-1234 Coward, Robert M., Carson, Culley C. 2008. You can take it with or without food.
- The half-life of Tadalafil is approximately 17.5 hours.
- This long half-life is the reason for its extended duration of action.
- It takes about 5 half-lives for a drug to be almost entirely eliminated from the body.
- Therefore, it can remain in your system for several days after a dose.
- This is important to remember for potential drug interactions.
- Inform any new doctor or dentist that you are taking Tadalafil.
- This is especially crucial before any surgical or dental procedure.
With once-daily Cialis, be sure to take it around the same time each day. When you’re taking Cialis once a day, there isn’t a best time to take Cialis. But taking your dose around the same time each day helps to keep a steady level of the drug in your body. For occasional (as needed) use for ED, take one Cialis tablet at least 30 minutes before anticipated sexual activity.
| Parameter | Value | Notes |
|---|---|---|
| Absorption | Peak plasma levels in ~2 hours | Food can delay absorption |
| Half-life | Approximately 17.5 hours | Maintains effect over the day |
| Metabolism | Liver enzymes, mainly CYP3A4 | Avoid CYP3A4 inhibitors |
In most cases, the ability to have sexual intercourse will be increased for up to 36 hours. If you have questions about taking Cialis, talk with your doctor or pharmacist. Cialis is usually a long-term treatment.
- Clinical trials have proven the efficacy and safety of Cialis (Tadalafil).
- In studies, men taking Tadalafil reported significant improvement in erectile function.
- It has been extensively studied in men with ED and comorbid conditions like diabetes.
- The safety profile is well-established after years of widespread use.
- Data from post-marketing surveillance continues to monitor for rare adverse events.
- Research into new applications for Tadalafil, like altitude sickness, is ongoing.
- Always rely on information from clinical studies and reputable medical sources.
If you and your doctor determine that it’s safe and effective for your condition, you’ll likely take it long term once you reach your maintenance dose.
- Cialis 10mg is prescribed to treat erectile dysfunction in men.
- It works by relaxing blood vessels in the penis.
- Cialis 10mg can be taken with or without food.
- The medication should be taken at least 30 minutes before activity.
- Effects of Cialis 10mg can last up to 36 hours.
- Do not take more than one 10mg dose per day.
- Cialis 10mg may interact with certain medications like nitrates.
- Consult a doctor before using Cialis 10mg if you have heart conditions.
- Possible side effects include headache, flushing, and nasal congestion.
- Store Cialis 10mg at room temperature away from moisture.
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Potential side effects of Cialis
You should take it around the same time each day. For daily use of Cialis for ED, the usual starting dosage is 2.5 mg per day. If this dosage isn’t effective for you, your doctor may increase your dosage to 5 mg per day. When used for benign prostatic hyperplasia (BPH), the recommended dose of Cialis for once daily use is 5 mg, taken at approximately the same time every day. When Cialis is prescribed along with the drug finasteride for BPH, the recommended Cialis dose for once daily use is 5 mg, taken at approximately the same time every day for up to 26 weeks. By clicking on this link, we may receive a commission. If your doctor prescribes once-daily Cialis for your condition, it’s best to take it around the same time each day. If you miss a dose, take it as soon as possible. However, you should not take more than one dose of Cialis per day.
Pros and cons of Cialis (tadalafil)
Tadalafil in the treatment of erectile dysfunction. A comparison of the efficacy and tolerability of tadalafil 10 mg and 20 mg in Japanese patients with severe erectile dysfunction. The journal of sexual medicine, 4(3), pp.745–752. This page was medically reviewed by Dr Alexandra Cristina Cowell, Writer & Clinical Content Reviewer on Sep 03, 2025. Next review due on Sep 03, 2028.
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Cialis form and strengths
We publish reviews collected through independent platforms including Reviews.io and Trustpilot. Why this page was updated on Sep 19, 2025 Content checked and updated as part of our 3-yearly periodic review, to ensure accuracy and currentness. Cialis is available in tablet form in strengths of 2.5 milligrams (mg), 5 mg, 10 mg, and 20 mg. The dosage varies depending on the condition being treated and whether it’s prescribed for occasional or daily use. For erectile dysfunction, Cialis can be taken occasionally as needed (10 mg, adjusted to 5 mg or 20 mg) or daily (2.5 mg, adjusted to 5 mg). Doing so could raise your risk of side effects, such as low blood pressure or priapism (a painful erection lasting 4 hours or longer). If you need help remembering to take your dose of Cialis on time, try using a medication reminder. This can include setting an alarm or downloading a reminder app on your phone.
| Country | Prescription requirement | Purchase limits | Online availability |
|---|---|---|---|
| USA | Yes | 30 pills/month | Yes |
| UK | Yes | 60 pills/month | Limited |
| Canada | Yes | 30 pills/month | Yes |
Do not take more Cialis than your doctor prescribes, as this can lead to harmful effects. Call your doctor right away if you think you’ve taken too much Cialis. You can also call 800-222-1222 to reach America’s Poison Centers or use its online resource.
Cialis prescriptions online: board-certified docs treat ED virtually
But it should not be taken more than once per day. For benign prostatic hyperplasia, the recommended dose of Cialis for once daily use is 5 mg, taken at approximately the same time every day. Cialis (tadalafil) is a prescription drug used to treat erectile dysfunction and symptoms of benign prostatic hyperplasia. (An active ingredient is what makes a medication 20 cialis work.) Cialis belongs to a group of drugs called phosphodiesterase type 5 inhibitors. This article describes the dosages of Cialis, as well as its strengths and how to take it.
Can I get Cialis without a doctor prescription?
To learn more about Cialis, including its cost and side effects, see this Cialis overview article. Your doctor will likely start you on a low dosage of Cialis and adjust it over time to reach the right amount for you. They’ll ultimately prescribe the smallest dosage that provides the desired effect. But be sure to take the dosage your doctor prescribes for you. In some cases, doctors may adjust your dosage from those described here.
How much does Cialis cost?
Cialis is available as an oral tablet that you swallow. Cialis is approved by the Food and Drug Administration (FDA) to treat the following: The prescribed Cialis dosage may vary depending on the condition it’s being used to treat. Notify them if you experience any Cialis side effects that may prevent you from taking your medication. There are two dosage options when Cialis is used to treat ED: dosage for occasional (as needed) use and for daily use. With occasional use, you’ll take Cialis only as needed. But if you have severe symptoms, immediately call 911 (or your local emergency number) or go to the nearest emergency room.
| Use Case | Description | Typical Dosage | Onset of Action |
|---|---|---|---|
| Erectile Dysfunction | Improves blood flow to penis | 10mg as needed | 30-60 minutes |
| Benign Prostatic Hyperplasia | Relieves urinary symptoms | 10mg daily | 2 weeks |
| Pulmonary Hypertension | Lowers blood pressure in lungs | 20mg daily | N/A |
The following are answers to some commonly asked questions about Cialis dosage. To get the maximum effect from Cialis, take it exactly as prescribed. If you’re using once-daily Cialis for either erectile dysfunction (ED) or benign prostatic hyperplasia (BPH), take your dose around the same time each day. This helps keep a consistent amount of the drug in your body to provide the maximum effect.
PDE-5 Inhibitors Come With Drawbacks
You also should not take more than the recommended maximum dosage of Cialis, which is 20 mg per day. Taking higher dosages of Cialis than this, such as 40 mg per day, raises your risk of serious side effects. Examples of these side effects include very low blood pressure and priapism (a painful erection lasting 4 hours or longer). With daily use, you’ll take one dose of Cialis per day. You don’t need to time your dose to be taken before sexual activity.
