How Long Does Tadalafil Take to Work?

Tadalafil, the active ingredient in Cialis, is a versatile treatment for erectile dysfunction that offers flexibility and control over your intimate experiences. You can take it every day at a low dose, or you can take it “as-needed” before sexual activity. 

For many men, trying to time ED medication can add unnecessary stress and even trigger performance anxiety. Tadalafil helps reduce that pressure with its longer window of action, so you don’t have to rush or plan intimacy down to the minute. 

This article covers one of the most common questions that men ask about tadalafil: How long does it take to work?

Key Takeaways

• Tadalafil is an erectile dysfunction treatment.
• You can take tadalafil every day at a low dose.
• Alternatively, take as needed – it starts to work within 30–60 minutes.
• Its effects can last up to 36 hours, earning it the nickname “weekend pill.”
• How effective it is depends on factors like how much alcohol you’ve consumed, any food you've eaten, your health, and the other medications you're taking.
• Always consult a healthcare professional before you use it.

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How Tadalafil (Cialis) Treats Erectile Dysfunction

Tadalafil increases blood flow to the penis during sexual arousal. It is a PDE5 inhibitor; it enhances the effects of nitric oxide, a natural chemical in the body that relaxes smooth muscles in the blood vessels. This allows more blood to flow into the erectile tissues, making it easier to achieve and maintain an erection (Carson & Rajfer, 2003).

How Do PDE5 Inhibitors Work?

PDE5 inhibitors (phosphodiesterase type 5 inhibitors) are a type of medication that blocks the PDE5 enzyme. The PDE5 enzyme breaks down a molecule called cGMP. cGMP helps relax blood vessels and improves blood flow, especially in the penis during sexual stimulation. By blocking PDE5, these medications increase blood flow to the penis, making it easier to get an erection and maintain it when you’re sexually aroused.

Other PDE5 inhibitors include:

• Sildenafil (Viagra): Takes 30–60 minutes to work, with effects lasting 4–6 hours.
• Vardenafil (Levitra, Staxyn): Similar onset and duration to sildenafil.
• Avanafil (Stendra): Fastest onset (15 minutes) with a shorter duration (up to 6 hours).

The active ingredients in these medications (sildenafil, vardenafil, avanafil, and tadalafil) determine their onset of action and how long their effects last. Each one varies in how quickly it starts working and how long the effects last, giving men the flexibility to choose an option that suits their lifestyle.

Healthcare providers must prescribe tadalafil, and you should only use it under their supervision. Your healthcare provider will take your full medical history and carry out some tests before prescribing it.

Tadalafil For As-Needed Use

When you take tadalafil as needed, doses are usually in 5mg, 10mg, or 20mg tablets. Men who want a faster onset of action usually take higher doses. Most men find it starts working within 30 to 60 minutes. But importantly, it stays active in your system for up to 36 hours. That’s why it’s earned the nickname “the weekend pill.” 

You should always consult your doctor to determine the right dose for you.

One of its biggest benefits is that you don't have to plan intimacy down to the minute. You can take your prescribed dose, continue with your day, and when the moment feels right, you'll be ready. Taking tadalafil as needed could work for you if you have some idea of when you might get intimate, but still need a bit of flexibility around the time frame.

Tadalafil For Daily Use

If you want spontaneity in your sex life, taking tadalafil daily might suit you better than taking it as needed. If you're taking it daily, you'll have a lower dose (2.5mg or 5mg) once a day. After you've used it consistently for about five days, you’ll have a steady amount of the drug in your bloodstream. The advantage of the steady state is that you're always ready for sex (McMahon et al., 2004).

Daily tadalafil may work well if you experience erectile dysfunction regularly, or you want your sex life to have a natural rhythm.

Factors Affecting Tadalafil Effectiveness

There are a few factors that can affect how quickly and effectively tadalafil works:

• Food: Tadalafil can be taken with or without food, but fatty foods can slow its rate of absorption. If you take it on an empty stomach, it works faster.
• Alcohol: Drinking too much alcohol can lower your blood pressure, increasing your risk of side effects. It can also interfere with your ability to get and maintain an erection.
• Age and Metabolism: If you're older or have a slower metabolism, tadalafil can take longer to start working.
• Underlying Health Conditions: Diabetes, low blood pressure, high blood pressure, an enlarged prostate, or hormonal imbalances can also affect how tadalafil works.
• Other Medications: Some blood pressure medications, antifungals, and antibiotics may interact with tadalafil, reducing its effectiveness.
• Hydration: Being dehydrated affects how well the medication is absorbed and processed, how your blood flows, and influences your general energy level.

When you manage all of these factors, you give Cialis (tadalafil) the best chance to work effectively.

ED Medications and Interactions with Other Medications

Certain medications, like nitrate medication used to treat chest pain, can be dangerous when they're combined with ED medications. Taking tadalafil with other PDE5 inhibitors or certain recreational drugs (like poppers) can cause a dangerous decrease in blood pressure. If you’re also taking medications for heart disease or pulmonary hypertension, this becomes even more important.

Consult with your doctor or healthcare provider before combining therapies or changing your dose.

Cialis (Tadalafil) and High Blood Pressure

Tadalafil relaxes blood vessels and lowers blood pressure slightly while increasing blood flow to help you get an erection. This can be risky for men who are already on blood pressure medication or have naturally low blood pressure.

Tadalafil is also used to treat pulmonary hypertension (high blood pressure that affects the arteries in the lungs).

If your blood pressure drops too low, taking tadalafil can cause symptoms like:

• Dizziness or fainting
• Blurred vision
• Nausea
• Sweating or confusion
• In extreme cases, a heart attack or stroke.

That's why you should monitor your blood pressure when you're taking ED treatments. Speak to your healthcare provider if you notice any new or worsening symptoms.

Possible Side Effects, Safety, and Precautions

Most men tolerate tadalafil well, and most side effects are mild and disappear within a few hours. However, one rare but serious side effect is priapism, a prolonged erection that requires immediate medical attention. Without treatment, priapism can cause permanent damage to your penis.

Common Side Effects Include:

• Headache
• Muscle aches or back pain
• Indigestion or upset stomach
• Nasal congestion
• Flushing (warmth or redness in the face or chest)

Less Common Side Effects May Include:

• Sudden vision or hearing changes
• Prolonged, painful erection (lasting more than four hours; this is a medical emergency)
• Severe chest pain, dizziness, or fainting
• Allergic reactions (rash, swelling, difficulty breathing)

If you experience any of these serious effects, stop taking the medication and seek medical advice immediately.

Clinical Trials and Effectiveness

Studies show tadalafil is a clinically proven treatment that helps men treat erectile dysfunction effectively and with minimal side effects. Its long half-life (around 17.5 hours) and its effects (lasting for up to 36 hours) set it apart from other ED treatments, offering a longer window of opportunity for intimacy (Porst et al., 2001).

A 2003 double-blind, placebo-controlled study published in BJU International found that men who took tadalafil reported significant improvement in erectile dysfunction symptoms compared to placebo (Carson & Rajfer, 2003). Other studies have also found that daily tadalafil can improve erectile function and urinary symptoms related to an enlarged prostate (McVary et al., 2007).

The benefits also extend beyond healthy erections. Clinical research also shows improved self-esteem, partner satisfaction, and relationship quality among users (Mulhall et al., 2008).

Tips for Taking Tadalafil

• If you're taking daily Cialis, take it at the same time every day.
• Don't eat a heavy meal or drink an excessive amount of alcohol before you take it.
• If you miss a dose, don't take double at the next dose.
• You need to be sexually aroused for tadalafil to work. Sometimes it's a good idea to plan sexual activity around the time you take the medication
• Think about whether there are any lifestyle changes you can make to support ED treatment. Regular exercise supports vascular health and overall sexual health.
• Stay hydrated for good blood flow.
• Store tadalafil at room temperature, and away from moisture and heat.

FAQs About Tadalafil

How Long Does It Take for Tadalafil to Work?

For most men, tadalafil takes 30 to 60 minutes to start working when taken in daily doses. It can work faster on an empty stomach and a little longer if you've eaten a heavy meal.

Does Tadalafil Work the First Time?

For many men, tadalafil works the first time, but not for everyone. If it doesn’t, don’t assume it’s ineffective. The dosage might need to be adjusted. Or, if you've had alcohol, this could have interfered with the medication. Just speak to your doctor so you can get the most from your treatment.

Can I Take Tadalafil Every Day?

If you've been prescribed the daily version of Cialis tadalafil, you can take it every day. This gives you the chance to be more spontaneous.

Does Tadalafil Work Without Sexual Stimulation?

You need to be sexually aroused for tadalafil to work.

References

Carson, C. C., & Rajfer, J. (2003). Efficacy of tadalafil for the treatment of erectile dysfunction. BJU International, 92(3), 257–261.

Porst, H., Padma-Nathan, H., Giuliano, F., Anglin, G., Varanese, L., & Rosen, R. (2001). Efficacy of tadalafil for the treatment of erectile dysfunction at 24 and 36 hours after dosing: A randomized controlled trial. Urology, 57(2), 301–305.

McMahon, C. G., Samali, R., & Johnson, H. (2004). Safety and efficacy of daily tadalafil for the treatment of erectile dysfunction. International Journal of Impotence Research, 16(3), 248–255.

U.S. Food and Drug Administration (FDA). (2011). FDA approves Cialis to treat signs and symptoms of benign prostatic hyperplasia.

McVary, K. T., Roehrborn, C. G., Kaminetsky, J. C., Auerbach, S. M., Esler, A. L., & Humphrey, S. (2007). Tadalafil improves erectile function and lower urinary tract symptoms associated with benign prostatic hyperplasia. The Journal of Urology, 177(4), 1401–1407. 

Mulhall, J. P., Guhring, P., Goldstein, I., & Kramer, A. (2008). Psychosocial impact of tadalafil treatment for erectile dysfunction. Current Medical Research and Opinion, 24(6), 1617–1624. 

Rosen, R. C., Cappelleri, J. C., Smith, M. D., Lipsky, J., & Peña, B. M. (2004). Development and evaluation of an abridged, 5-item version of the International Index of Erectile Function (IIEF-5) as a diagnostic tool for erectile dysfunction. International Journal of Impotence Research, 16(5), 295–300. https://doi.org/10.1038/sj.ijir.3901202