ADVERSE REACTIONS
As with any medication, Cialis comes with possible side effects. The most common Cialis side effects include: Clinical trials show that most side effects are dose-dependent, meaning you’re more likely to get them with higher doses — and remember, Cialis 20 mg is the highest dose of the drug.
Additional Resources
Your doctor will probably have you take a low dose of Cialis or use the medication with caution. History of erections lasting longer than 4 hours. If you have a history of prolonged erections or priapism, you may be at an increased risk for developing them while taking Cialis. A prolonged erection is one that lasts more than 4 hours. And priapism is a painful erection that lasts more than 6 hours.
Does tadalafil interact with other medicines (drug interactions)?
Both conditions are considered emergencies and need to be treated right away to prevent long-term damage. So if you’ve had prolonged erections or priapism in the past, tell your doctor before you take Cialis. They may have you carefully monitor your condition after taking Cialis. Blood cell problems can include sickle cell anemia and blood cancers such as multiple myeloma or leukemia. If you have a blood cell problem, tell your doctor before taking Cialis.
Related treatment guides
You may be at an increased risk for developing a long lasting erection when taking the drug. Erections lasting longer than 4 hours can be dangerous and may cause permanent damage. Your doctor may recommend a low dose of Cialis if you have blood cell problems. If you’ve had an allergic reaction to Cialis or any of its ingredients, you should not take Cialis. Ask your doctor what other medications are better options for you. Allergic reactions to Cialis aren’t common but they’re possible. Swelling of the lips, tongue, or throat Swelling of the lips, tongue, or throat There’s also a risk of priapism or prolonged erections — we’re talking for several hours here. It may sound great if you’re suffering from ED, but prolonged erections can be painful and cause irreversible damage to the penis.
| Product | Dosage | Quantity + Bonus | Price | |
|---|---|---|---|---|
| Cialis Professional | 20mg | 120 + 4 Pills | 291.68€ 277.79€ | |
| Cialis Soft Tabs | 20mg | 90 + 6 Pills | 216.71€ 206.39€ | |
| Cialis Generic | 5mg | 20 Pills | 41.99€ 39.99€ | |
| Cialis Generic | 5mg | 120 + 6 Pills | 132.92€ 126.59€ | |
| Cialis Generic | 60mg | 20 Pills | 65.61€ 62.49€ | |
| Cialis Original | 20mg | 8 Pills | 61.70€ 58.76€ | |
| Cialis Generic | 60mg | 270 + 10 Pills | 443.96€ 422.82€ | |
| Cialis Generic | 60mg | 120 + 8 Pills | 240.18€ 228.74€ | |
| Cialis Professional | 20mg | 270 + 6 Pills | 623.07€ 593.40€ | |
| Cialis Generic | 60mg | 90 + 6 Pills | 196.67€ 187.30€ | |
| Cialis Generic | 40mg | 10 Pills | 37.79€ 35.99€ | |
| Cialis Soft Tabs | 20mg | 10 Pills | 39.03€ 37.17€ | |
| Cialis Black | 80mg | 60 + 4 Pills | 150.98€ 143.79€ | |
| Cialis Generic | 40mg | 120 + 8 Pills | 206.98€ 197.12€ | |
| Cialis Generic | 2.5mg | 30 + 4 Pills | 51.95€ 49.48€ | |
| Cialis Generic | 20mg | 10 Pills | 31.49€ 29.99€ |
If your erection lasts more than four hours, seek medical advice.
The drug Cialis is popular because you can take it every day. But should you?
They may have you start with a low dose of the medication. If you have any history of vision loss, talk with your doctor before taking Cialis. This vision loss may include having vision conditions such as non-arteritic anterior ischemic optic neuropathy (NAION). Taking Cialis when you have vision loss may increase your risk of vision side effects. Your doctor may recommend a different medication than Cialis.
CIALIS for Once Daily Use for Erectile Dysfunction
If you have retinitis pigmentosa (a genetic eye condition that may cause vision loss), you should not take Cialis. It’s possible that Cialis may increase your risk of bleeding. So if you have a history of stomach ulcers, taking Cialis may increase your risk of developing bleeding ulcers. (Stomach ulcers are sores in the lining of your stomach or intestine, and they may bleed.) Talk with your doctor before taking Cialis if you have a history of stomach ulcers. Cialis may increase your risk of bleeding.
Pulmonary arterial hypertension
If you have a history of bleeding problems, such as hemophilia, taking Cialis may further increase your risk for bleeding. Talk with your doctor before taking Cialis if you have a history of bleeding problems. If you have a deformed penis or a history of Peyronie’s disease (a curved penis), tell your doctor before taking Cialis. You may be at an increased risk for developing a long-lasting erection if you take the drug. Blood may become trapped in the penis and lead to an erection lasting longer than 4 hours, which can be dangerous and cause lasting damage. You may be more likely to get prolonged, painful erections from Cialis if you have: Anatomic deformations in the penis (like Peyronie’s disease) Anatomic deformations in the penis (like Peyronie’s disease) There’s also a small risk of vision loss. If you notice any vision loss in one or both eyes, stop taking Cialis and seek medical help.
- Cialis comes in 10 mg and 20 mg doses for erectile dysfunction.
- The 20 mg dose is typically prescribed for more severe ED cases.
- Cialis 10 mg may be suitable for those starting therapy or with milder symptoms.
- Both dosages are effective but vary in strength and duration.
- Cialis 20 mg lasts longer than the 10 mg, often up to 36 hours.
- Doctors may recommend Cialis 10 mg for daily use or on-demand.
- Cialis 20 mg provides a more potent effect if higher dosage is needed.
- The choice between 10 mg and 20 mg depends on individual medical factors.
- Higher doses like 20 mg might have increased side effects.
- Always consult a healthcare provider before choosing the dosage.
This could be a sign of non-arteritic anterior ischemic optic neuropathy (NAION), which is caused by a lack of blood flow to the optic nerve.
Frequently asked questions
For example, in clinical trials, 11 percent of people taking tadalafil 10 mg got a headache, whereas 15 percent of those taking tadalafil 20 mg got a headache. Some side effects have the same likelihood in both doses, such as flushing and limb pain. If the side effects of Cialis 20 mg are too much, a healthcare provider may reduce your dose. If this is a particularly annoying side effect of other ED medications, switching to Cialis may be the answer. A 2017 systematic review and meta-analysis compared sildenafil (the generic of Viagra) and tadalafil. Another serious side effect includes a sudden decrease in hearing or hearing loss.
| Parameter | Cialis 10mg | Cialis 20mg | Notes |
|---|---|---|---|
| Suitable for Erectile Dysfunction | Yes | Yes | Both doses are effective |
| Recommended for Older Patients | Usually lower dose | Usually lower dose | Adjusted based on health status |
| Contraindications | Nitrate use | Nitrate use | Avoid in patients taking nitrates |
| Liver/Kidney Considerations | Dose adjustment | Dose adjustment | Necessary for organ impairment |
Again, get medical advice as soon as you notice this.
12.2 Pharmacodynamics
If you find Cialis 10 mg isn’t working, a 20 mg tablet might do the trick. You don’t need to take it every day. Depending on your preference and lifestyle, you may not want to take Cialis day in and day out. In fact, the 20 mg dose of Cialis should only be taken as needed. Side effects of Cialis are usually mild and should go away on their own — although they may be worse with higher doses. There are also a few drug interactions you should know about.
- Cialis 10 mg offers a lower-cost option for some users.
- Cialis 20 mg provides a more potent effect for challenging ED.
- Always follow medical advice for choosing between doses.
- The medication enhances blood flow to the penis.
- Timing of the dose is flexible, but 30 minutes pre-activity is typical.
- Avoid grapefruit or grapefruit juice when taking Cialis.
- Cialis’s effect duration makes it convenient for spontaneous activity.
- Regular use can improve confidence and quality of life.
- Dosing adjustments should be made gradually and safely.
- Safety is paramount—report side effects to your doctor immediately.
You shouldn’t take Cialis 20 mg (or any dose of the drug) at all if you’re taking nitrates.
- For mild to moderate ED, 10mg on-demand is often sufficient.
- For more severe ED, 20mg on-demand may be necessary.
- 10mg daily dosing minimizes planning around medication timing.
- 20mg is not recommended for use with other PDE5 inhibitors.
- Both 10mg and 20mg can be part of a comprehensive ED treatment plan.
- Underlying causes of ED should be investigated regardless of dose.
- The 20mg dose may be cost-prohibitive for frequent use.
- Adherence to prescribed dose is critical for safety and efficacy.
The combo can cause your blood pressure to drop suddenly, resulting in dizziness, loss of consciousness, or even a heart attack or stroke. Nitrates can be found in medications like isosorbide dinitrate or isosorbide mononitrate, which are used to treat prevent angina caused by heart disease.
5.7 Renal Insufficiency
It’s not known if Cialis is safe to take during pregnancy. For more information, please see the “Cialis and pregnancy” section above. It’s not known if Cialis is safe to take while breastfeeding. For more information, please see the “Cialis and breastfeeding” section above. Note: For more information about the potential negative effects of Cialis, see the “Cialis side effects” section above.
Side effect details
You might have seen Cialis® — the popular erectile dysfunction (ED) medication — available in doses ranging from 2.5 mg to 20 mg. Cialis 20 mg is an effective erectile dysfunction treatment, but so are the lower doses of the drug. Below, we’ll cover what Cialis 20 mg is used for, the benefits and side effects of this dose of Cialis, and how it compares to other strengths. Cialis is a brand name for tadalafil, a widely prescribed ED medication. Benign prostatic hyperplasia (BPH) or an enlarged prostate Benign prostatic hyperplasia (BPH) or an enlarged prostate Other forms of tadalafil are used to treat pulmonary arterial hypertension, a type of high blood pressure in the lungs, but Cialis is not prescribed for this condition.
How is tadalafil supplied (dosage forms)?
Cialis doses include 2.5 mg, 5 mg, 10 mg, and 20 mg. You can take Cialis on an as-needed basis and pop a pill before sex, or you can take a daily dose of Cialis so you’re always ready for action. If you’re taking it as needed, you’ll likely be prescribed 5 mg, 10 mg, or 20 mg. The 10 mg strength is the typical starting dose, and it can be adjusted up or down depending on efficacy and side effects. But you won’t be taking 20 mg of Cialis daily. Also, watch out for recreational drugs that contain nitrates, like “poppers.” You also shouldn’t take Cialis if you take medications called guanylate cyclase stimulators, such as riociguat, which treats pulmonary hypertension. If you’re taking alpha-blockers (like doxazosin, tamsulosin, or alfuzosin) — which mainly treat high blood pressure or BPH — or CYP3A4 inhibitors (like the antibiotic erythromycin and the antifungal medication ketoconazole), which treat a wide variety of conditions, you may be prescribed a low dose of Cialis—probably not the 20 mg kind.
5.1 Cardiovascular
It found that tadalafil caused lower rates of flushing. Muscle aches and back pain were more common in tadalafil than sildenafil, though. Overall, tadalafil and sildenafil had similar efficacy and safety, but men and their partners preferred tadalafil. You can learn more about the two ED treatments in our Cialis vs. Viagra guide. It’s unclear whether it’s safe to take Cialis 20 mg or any dose of the drug with other PDE5 inhibitors, such as: Tell your prescribing healthcare provider about the medications or supplements you’re taking before trying Cialis. Beyond medications, watch out for how much you drink when you’re taking Cialis. If you have five or more alcoholic drinks, you may experience: And a weird one to watch out for: grapefruit and Cialis.
5.9 Alcohol
The lower doses of 2.5 mg and 5 mg are the daily doses of Cialis. For ED — which is when you struggle to get or keep an erection — Cialis works by dilating the blood vessels in the penis, which leads to a firmer erection. Cialis — 20 mg or otherwise — doesn’t just give you an erection, though. Some form of sexual stimulation is required to get hard. Cialis 20 mg may be a more effective treatment for ED than the 10 mg version.
How does Cialis work for Erectile Dysfunction (ED)?
Clinical trials found that 68 to 77 percent of men taking 10 mg Cialis were able to have penetrative sex with their partner. Of those taking 20 mg Cialis, 76 to cialis no perscription 85 percent were able to have penetrative sex. But not all research agrees — a smaller daily dose may be just as effective as the as-needed Cialis treatment. A systematic review and meta-analysis examined six randomized controlled trials involving more than 1,500 people and compared an as-needed tadalafil treatment to a once-a-day dose. The results showed that both treatments were about equally effective.
When to take
While Cialis works similarly to Viagra®, Cialis lasts longer in your body. In fact, Cialis is known as the “weekend pill” for its long half-life. Because you can pop one pill and have sex whenever you like over the next 36 hours (give or take a few hours), it offers more spontaneity. In comparison, avanafil only lasts up to six hours, and Viagra only lasts up to four hours. Clinical trials show that Cialis is effective for various severities and types of ED, including difficult-to-treat ED. A 2020 study on rats found that grapefruit juice inhibits tadalafil metabolism — remember, that’s the active ingredient in Cialis.
