Tadalafil is approved in the United States, Canada, and Japan to improve exercise ability in people with pulmonary arterial hypertension.
| Parameter | Value | Description | Notes |
|---|---|---|---|
| Absorption Time | 30-60 minutes | Time to reach peak plasma concentration | After oral intake |
| Half-life | 17.5 hours | Duration of action | Prolonged effects possible |
| Peak Plasma Levels | Achieved in 2 hours | Time to maximum concentration | Variable per individual |
| Bioavailability | ~84% | Proportion absorbed into bloodstream | When taken with food |
The most common potential side effects when using tadalafil are headache, stomach discomfort or pain, indigestion, burping, acid reflux, back pain, myalgia (pain in limbs and extremities), flushing, hypertension (or uncommonly hypotension), and stuffy/runny nose.
- Cialis 20mg requires a doctor's prescription in most regions.
- Some men prefer Cialis over other ED treatments due to longer effects.
- The medication can sometimes cause back pain or muscle aches.
- Cialis has been widely studied in clinical trials.
- In some cases, Cialis may be less effective with certain health conditions.
- The medication may influence blood pressure levels.
- Cialis 20mg should not be used in combination with riociguat.
- Men should avoid excessive alcohol consumption with Cialis.
- Regular assessment by a healthcare provider ensures safe use.
- Cialis’s long duration makes it suitable for spontaneous activity.
- Generic tadalafil provides a cost-effective alternative.
- Proper storage extends the medication's efficacy.
[7] Also common are dizziness, peripheral edema, fatigue, and urinary or respiratory tract infection; both diarrhea and constipation have been reported.
14.2 CIALIS for Once Daily Use
Collaborate with your healthcare provider to tailor your treatment, and consider lifestyle factors that can enhance effectiveness. Take Cialis exactly as prescribed by your healthcare provider. If you have both ED and BPH, you may take it once daily. For ED alone, it's often taken as needed before sexual activity. Take Cialis as needed before sexual activity.
Morning vs. evening administration
Typically, this involves taking the medication once every other day, at least 30 minutes (ideally two hours) before sex. The effects for ED can last up to 36 hours. Remember that Cialis does not increase sexual desire, so sexual stimulation is necessary. Take a lower dose of Cialis at the same time each day. This allows the option to attempt sex at any time, but sexual stimulation is still required. [7] Diarrhea was reported more frequently in patients 65 or older than in younger subjects.
- Patient counseling points: Take exactly as prescribed by your doctor.
- For on-demand (20mg), take at least 30 minutes before sexual activity.
- For daily use, take at approximately the same time each day, with or without food.
- Do not take more than one dose per day.
- Seek immediate medical help for an erection lasting more than 4 hours.
- Stop taking Cialis and seek medical help if you experience sudden vision or hearing loss.
- Be cautious when rising from a sitting/lying position to avoid dizziness.
- Report any new medications (prescription, OTC, herbal) to your doctor before taking Cialis.
- It does not protect against sexually transmitted infections (STIs) or pregnancy.
- Keep all appointments with your doctor for monitoring.
- Do not share your medication with others.
[4] These side effects reflect the ability of PDE5 inhibition to cause vasodilation (causing blood vessels to widen) and usually resolve after a few hours.
| Product | Dosage | Quantity + Bonus | Price | |
|---|---|---|---|---|
| Cialis Generic | 2.5mg | 120 + 6 Pills | 128.93€ 122.79€ | |
| Cialis Generic | 60mg | 270 + 10 Pills | 443.96€ 422.82€ | |
| Cialis Generic | 60mg | 120 + 8 Pills | 240.18€ 228.74€ | |
| Cialis Generic | 2.5mg | 20 Pills | 40.73€ 38.79€ | |
| Cialis Generic | 60mg | 360 + 10 Pills | 570.52€ 543.35€ | |
| Cialis Generic | 10mg | 10 Pills | 31.41€ 29.91€ | |
| Cialis Generic | 40mg | 90 + 6 Pills | 171.35€ 163.19€ | |
| Cialis Soft Tabs | 20mg | 60 + 4 Pills | 159.37€ 151.78€ | |
| Cialis Original | 20mg | 120 + 8 Pills | 497.29€ 473.61€ | |
| Cialis Professional | 20mg | 270 + 6 Pills | 623.07€ 593.40€ | |
| Cialis Generic | 20mg | 30 + 4 Pills | 68.05€ 64.81€ | |
| Cialis Soft Tabs | 20mg | 270 + 10 Pills | 471.40€ 448.95€ | |
| Cialis Original | 20mg | 22 + 2 Pills | 129.20€ 123.05€ | |
| Cialis Generic | 40mg | 60 + 6 Pills | 130.98€ 124.74€ | |
| Cialis Black | 80mg | 270 + 10 Pills | 502.88€ 478.93€ | |
| Cialis Professional | 40mg | 60 + 2 Pills | 262.32€ 249.83€ | |
| Cialis Professional | 40mg | 30 Pills | 148.94€ 141.85€ |
In May 2005, the US Food and Drug Administration (FDA) found that tadalafil (along with other PDE5 inhibitors) was associated with vision impairment related to NAION (non-arteritic anterior ischemic optic neuropathy).
- Mechanism of action: Inhibits phosphodiesterase type 5 (PDE5) in smooth muscle.
- PDE5 breaks down cyclic guanosine monophosphate (cGMP).
- Sexual stimulation releases nitric oxide (NO), which increases cGMP.
- cGMP causes smooth muscle relaxation in the corpus cavernosum of the penis.
- This relaxation allows increased blood flow and an erection.
- By inhibiting PDE5, tadalafil increases cGMP levels, enhancing the erectile response.
- In BPH/urinary tract, relaxation of prostate and bladder smooth muscle improves symptoms.
- In PAH, vasodilation occurs in the pulmonary vascular bed.
- It has minimal effect on PDE6 (retina) compared to sildenafil, possibly fewer visual effects.
- It has weak inhibition of PDE11 (function unknown); clinical significance unclear.
- The effect is dependent on sexual stimulation and intact neural pathways.
[16] Most, but not all, of these patients, had underlying anatomic or vascular risk factors for the development of NAION, unrelated to PDE5 inhibitor use. [7] The FDA concluded that they were not able to draw a cause and effect relationship, only an association; the label of all three PDE5 inhibitors was changed to alert clinicians to that fact.
Key Takeaways: Cialis vs Tadalafil
If you miss a dose, do not double up, as this can increase side effects. You might be able to take daily Cialis for sex and voiding issues and add as-needed doses for extra support with sexual dysfunction. This should only be done under your doctor’s supervision. Cialis belongs to a drug class called phosphodiesterase type 5 inhibitors, or PDE5 inhibitors. They affect this specific enzyme and work to increase nitric oxide.
Can women take Cialis?
When combined with sexual stimulation, this process helps to increase blood flow to the penis and achieve an erection. Most people begin with a 10 mg dose of Cialis for ED, but it can be adjusted between 5 mg and 20 mg as needed. For daily ED use, a lower dose of 2.5 mg is common but can be adjusted to 5 mg. The latter Cialis dose is the most common treatment for BPH, which can co-occur with ED. Cialis doses can vary with age, underlying health conditions (like kidney or liver disease), or other medications. A 2019 meta-analysis found that tadalafil exposure was not associated with NAION.
- Overdose: Symptoms would be an extension of side effects (severe headache, dizziness).
- Expected effects include potentially severe hypotension, fainting, and priapism.
- Standard supportive measures should be applied, including monitoring vital signs.
- Priapism requires immediate urological intervention to prevent tissue damage.
- Hemodialysis is not expected to accelerate clearance (tadalafil is highly protein-bound).
- There is no specific antidote for tadalafil overdose.
- In case of suspected overdose, contact poison control (1-800-222-1222 in US) or emergency.
- Keep the medication in its original container out of reach of children and pets.
- Accidental ingestion by a child is a medical emergency.
- Always take the prescribed dose; do not increase it without medical advice.
- Inform all healthcare providers of your use of tadalafil.
In October 2007, the FDA announced that the labeling for all PDE5 inhibitors, including tadalafil, requires a more prominent warning of
17.3 Concomitant Use with Drugs Which Lower Blood Pressure
Stay hydrated: Drink plenty of fluids to support blood flow and optimize how your body absorbs the medication. Correct dosage: Follow your healthcare provider's dosage instructions and consult your provider before making any changes. Weight loss can be considered a first-line therapy for ED. Adopt a diet rich in fruits, vegetables, lean proteins, and whole grains. Engage in generic cialis 40 mg regular exercise such as brisk walking, swimming, or cycling.
2. Benign Prostatic Hyperplasia (BPH)
Address anxiety or depression through therapy or counseling. Improve sleep quality, including seeking treatment for sleep apnea. Making lifestyle adjustments can be challenging, but incremental changes can yield significant improvements over time. Seek guidance from your healthcare provider, who may refer you to specialists such as a registered dietitian nutritionist (RDN) or a sexual and relationship therapist. Cialis can interact with other medications, foods, and beverages. the potential risk of sudden hearing loss as the result of post-marketing reports of deafness associated with use of PDE5 inhibitors.
5.8 Hepatic Impairment
Talk with your healthcare provider about these potential interactions to ensure you get the maximum effect from Cialis. Medications: Nitrates (like a nitro patch or sublingual pill) should never be taken with Cialis. Nor should it be taken with drugs called guanylate cyclase stimulators like Adempas (riociguat), used to treat pulmonary arterial hypertension. Talk with your healthcare provider about the use of blood pressure drugs, antacids, and other medications that may interact with Cialis. Alcohol: Alcohol use can contribute to ED problems, even temporary issues.
What if I miss a dose?
In addition, combining Cialis and alcohol can cause severely low blood pressure. Grapefruit: Grapefruit can slow the body's ability to eliminate Cialis, potentially leading to priapism and other side effects. People who need help with an immediate alcohol crisis can call 988 to reach the 988 Suicide & Crisis Lifeline. The Substance Abuse and Mental Health Services Administration (SAMHSA) hotline at 1-800-662-HELP (4357) offers free and confidential help at any time. Common side effects of Cialis include the following: Pain in the back, extremities, and muscles Nasal congestion, sinus infection and cold symptoms Call your healthcare provider right away if you have serious side effects. Tadalafil is metabolized predominantly[19] by the liver CYP3A4 enzyme system.
8.1 Pregnancy
Call 911 if your symptoms feel life-threatening or if you think you have a medical emergency. These symptoms or conditions can include the following: Anaphylaxis (allergic severe reaction): Get emergency medical help if you have urticaria (hives), difficulty breathing, or swelling of the face, lips, tongue, or throat Severe skin reactions: Get emergency medical help if you have a fever, burning eyes, sore throat, skin pain, red or purple rash, or blistering/peeling skin. Chest pain, or stroke symptoms like one-sided weakness or fainting Priapism (erection lasting more than four hours) Call cialis lily your healthcare provider if you have unusual problems while taking this medication. If you experience a severe side effect, you or your provider may send a report to the FDA's MedWatch Adverse Event Reporting Program or by phone (800-332-1088). Tadalafil, sold under the brand name Cialis among others, is a medication used to treat erectile dysfunction, benign prostatic hyperplasia, and pulmonary arterial hypertension.
What should I do if I miss a dose of tadalafil?
[7] Onset is typically within half an hour and the duration is up to 36 hours. Common side effects include headache, muscle pain, flushing, and nausea. [7] Caution is advised in those with cardiovascular disease. [7] Rare but serious side effects include a prolonged erection that can lead to damage to the penis, vision problems, and hearing loss. [7] Tadalafil is not recommended in people taking nitrovasodilators such as nitroglycerin, as this may result in a serious drop in blood pressure. Penile erection during sexual stimulation is caused by increased penile blood flow resulting from the relaxation of penile arteries and the smooth muscle of the corpus cavernosum.
5.3 Prolonged Erection
[7] Tadalafil is a PDE5 inhibitor which increases blood flow to the penis. [7] It also dilates blood vessels in the lungs, which lowers the pulmonary artery pressure. Tadalafil was approved for medical use in the United States in 2003. [7] It is available as a generic medication. [8] In 2022, it was the 172nd most commonly prescribed medication in the United States, with more than 3 million prescriptions.
Cialis for ED and BPH
Tadalafil is used to treat erectile dysfunction, benign prostatic hyperplasia, and pulmonary arterial hypertension. [7] In the United States, tadalafil (as Cialis) is indicated for the treatment of erectile dysfunction and the signs and symptoms of benign prostatic hyperplasia;[4] and (as Adcirca) for the treatment of pulmonary arterial hypertension to improve exercise ability. A meta‐analysis found that tadalafil is an effective treatment for lower urinary tract symptoms due to benign prostatic hyperplasia and that such treatment had a low rate of adverse effects. [11] Tadalafil is FDA-approved for males as a therapy to treat and prevent symptoms of benign prostatic hyperplasia, such as urinary urgency, hesitancy, weak stream, dribbling, and incontinence. Tadalafil was found to have similar benefits for lower urinary tract symptoms as the usually prescribed tamsulosin. [medical citation needed] This response is mediated by the release of nitric oxide (NO) from nerve terminals and endothelial cells, which stimulates the synthesis of cyclic guanosine monophosphate (more commonly known as cyclic GMP or cGMP) in smooth muscle cells.
8.6 Hepatic Impairment
Talk with your healthcare provider about your dose and don't change it without a recommendation as complications such as priapism can occur. Priapism means an erection has lasted four hours or more, won't go away, and typically causes pain. Cialis can help manage symptoms of erectile dysfunction. However, using it as part of a comprehensive ED treatment plan can increase your chances of success. Remember that ED is often related to heart health, diabetes, and other conditions that benefit from careful management and lifestyle changes.
Warnings and Precautions
If Cialis doesn’t fully address your ED symptoms, there may be another underlying issue. To get the best results from Cialis, consider these tips: Timing: Take Cialis at least two hours before planned sexual activity. It remains effective for up to 36 hours, with peak concentration in 2 to 3 hours. Diet and alcohol intake: You can take Cialis with or without food, but heavy or fatty meals might delay its absorption. It's best to limit alcohol, as it can reduce Cialis's effectiveness and heighten side effects like dizziness or low blood pressure.