Notify them if you experience any Cialis side effects that may prevent you from taking your medication.
This is why it’s a good idea to take Cialis daily at the same time every day so that it’s continuously active in your system. As far as Cialis daily vs on-demand, the answer depends on how you need Cialis to work for you. If you want spontaneous sex, Cialis daily is the better option. However, if your ED comes and goes, you don’t want to take a tadalafil daily dose or aren’t sexually active more than two days a week, on-demand Cialis may be best. It’s unlikely you will be prescribed it when you first start treatment.
If you’ve tried a 10mg Cialis dosage, you haven’t seen results you hoped for and you didn’t have side effects, your clinician may consider prescribing the 20mg. You might feel the higher the dose the better, but if you get easy, strong erections on 10mg a higher dose isn’t going to beat that. It will however increase the risk of side effects. Your clinician will evaluate whether the benefits outweigh the risk of side effects. If you’re prescribed 20mg and find either that you’re experiencing too many side effects or are not seeing the results you want, speak with your clinician.
They may suggest another type of ED pill or an alternative treatment. As 20mg is the Cialis max dose there is no “Cialis 30mg” or beyond and you should never take more than one tablet in any 24 hour period. Known as the “standard dose,” Cialis 10mg is the initial dose of Cialis prescribed when starting treatment. Tadalafil 10mg is the generic equivalent and will be equally as effective. As it’s the unbranded version, the tadalafil 10mg price will be slightly cheaper. 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. You’ll likely take one 10-mg tablet before sexual activity.
| Criterion | Requirement | Notes |
|---|---|---|
| Age | 18 years or older | |
| Cardiovascular health | No severe cardiac conditions | Consult physician |
| Other medication use | No concurrent nitrates or certain drugs | Detailed medical review |
Depending on how well the 10-mg dose works for your ED, your doctor may adjust your dose.
| Product | Dosage | Quantity + Bonus | Price | |
|---|---|---|---|---|
| Cialis Generic | 40mg | 270 + 10 Pills | 382.19€ 363.99€ | |
| Cialis Professional | 40mg | 30 Pills | 148.94€ 141.85€ | |
| Cialis Super Active | 20mg | 270 + 30 Pills | 661.49€ 629.99€ | |
| Cialis Generic | 10mg | 60 + 6 Pills | 105.81€ 100.77€ | |
| Cialis Generic | 20mg | 120 + 8 Pills | 188.15€ 179.19€ | |
| Cialis Soft Tabs | 20mg | 90 + 6 Pills | 216.71€ 206.39€ | |
| Cialis Generic | 5mg | 270 + 10 Pills | 205.81€ 196.01€ | |
| Cialis Super Active | 20mg | 60 + 8 Pills | 230.32€ 219.35€ | |
| Cialis Professional | 40mg | 180 + 4 Pills | 618.23€ 588.79€ | |
| Cialis Generic | 5mg | 90 + 6 Pills | 115.91€ 110.39€ | |
| Cialis Generic | 40mg | 120 + 8 Pills | 206.98€ 197.12€ |
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.
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. Cialis is available as an oral generic brand cialis 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. You also should not take more than the recommended maximum dosage of Cialis, which is 20 mg per day.
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. 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. When we present you with stats, data, opinion or a consensus, we’ll tell you where this came from. And we’ll only present data as clinically reliable if it’s come from a reputable source, such as a state or government-funded health body, a peer-reviewed medical journal, or a recognised analytics or data body.
We couldn't find what you're looking for. Or, if you're looking for something we don't have yet, you can suggest something. All of our reviews are collected from real patients after their treatment has been delivered. 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. 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).
The 10mg dose works for around 71% of men and has a lower risk of side effects than the 20mg dose. If you’re starting treatment with Cialis daily, you’ll normally be prescribed Cialis 2.5mg. This is the lowest daily dose available. 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. 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, order canada tablets online cialis 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. It should be equally as effective at treating ED as Cialis. There is no Cialis 40mg or Tadalafil 40mg available in the US. 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. 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.
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. 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. 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. 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. 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. If your doctor prescribes Cialis to treat ED along with BPH symptoms, you’ll take Cialis once per 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 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. 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. For this use, the usual dosage is 5 mg per day.
| 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 |
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. Depending on how severe your kidney or liver problems are, your doctor may recommend occasional dosing instead of daily dosing to treat ED. 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. You can take it with or without food.
| Side Effect | Frequency | Severity | Suggestions |
|---|---|---|---|
| Headache | Common | Mild | OTC pain relievers |
| Flushing | Common | Mild | Cool compress |
| Muscle Pain | Less common | Mild | Rest, hydration |
With once-daily Cialis, be sure to take it around the same time each day.
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). 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. 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.