Can You Take Cialis in the Morning and Viagra at Night?

This article will discuss when you can take Viagra after you take Cialis. Learn why you can't take them in the same day.

The Promescent Team
Hands on, practical experience – this is our expertise
by The Promescent Team Last updated 03/14/2023

Cialis and Viagra are the two most popular doctor-prescribed erectile dysfunction (ED) medications on the market.

Both ED pills are proven effective and are in the family of PDE5 inhibitors that address erectile dysfunction.

Quick FAQs

Cialis and Viagra are FDA-approved medications for erectile dysfunction.

They reduce the PDE5 inhibitor in the body, which helps increase blood flow to the penis, and allows men to get an erection when aroused.

Users should avoid taking Cialis and Viagra at the same time, as it can increase the risk of serious side effects.

While they both increase blood flow to the penis leading to sexual arousal, they do have differences. 

And taking them both at the same time increases the risk of adverse reactions, such as too-low blood pressure.

What are Cialis and Viagra?

Both Cialis and Viagra are phosphodiesterase inhibitors (PDE5) and have been approved by the US Food and Drug Administration (FDA).

Cialis (tadalafil)

As a PDE5 inhibitor, Cialis (tadalafil) boosts blood flow to the penis, leading to sexual arousal.

You have two dosage options with Cialis. The low-dose once-a-day option builds up and stays in the blood system to prepare the body for sexual activity. 

The second dosage option involves taking Cialis 30 minutes before sex and can last upwards of 36 hours.

Viagra (sildenafil)

Viagra (sildenafil) was the first PDE5 inhibitor to enhance blood flow to the penis.

A major difference between Cialis and Viagra is that Viagra doesn't last as long. It must be taken 30 minutes before you anticipate sex.

You can only take Viagra once every 24 hours. If you take it daily, there is no guarantee that it will still be in your system when you gear up for sexual activity.

Viagra tends to be an ideal ED solution for men who enjoy occasional sex.

How do Cialis and Viagra work?

Both Cialis and Viagra are part of the PDE5 inhibitor drug family that also includes vardenafil and avanafil.

Neither ED medication will directly cause an erection and does not cure erectile dysfunction. Cialis and Viagra require sexual arousal to work.

Instead, the ED pills address the symptoms of erectile dysfunction by increasing blood flow to the penis by reducing the PDE5 chemical in your body. 

Decreased phosphodiesterase helps the muscles in the blood vessels relax to improve blood circulation and achieve an erection.

How long does it take Viagra to work?

Viagra is meant to work fast. For most men, it takes 30 to 60 minutes for Viagra to kick in.

One of the drawbacks of Viagra working fast, it doesn't work for long. The effects only last for about four to eight hours.

How long does it take Cialis to work?

Cialis takes about 1 to 2 hours before it starts working. But the benefit of this drug compared to viagra is that it lasts longer.

Cialis can be effective for up to 36 hours when taken.

Can you take Cialis and Viagra at the same time?

You should not take Cialis and Viagra in the same 24-hour period. The main reason for this is that Cialis stays in the body for up to 36 hours.

It’s best to wait at least 36 hours after taking Cialis before taking Viagra or another dose of Cialias. 

If you’ve taken a dose of Viagra, wait at least 24 hours before taking Cialis or another dose of Viagra. 

Taking Cialis and Viagra together can increase the risk of side effects associated with these medications.

Side effects

There are a variety of potential side effects with taking ED meds. A few of them include:

  • flushing
  • low blood pressure
  • headache
  • altered vision
  • back pain
  • dizziness
  • rhinitis
  • priapism

Can you overdose?

While rare, an overdose is possible on either Cialis or Viagra. Taking them together only ups the chances of an overdose that can lead to a fatal drop in blood pressure.

If an overdose of PDE5 is suspected, contact a healthcare professional immediately and call poison control for support until help arrives.

What's the difference between Cialis and Viagra?

One of the big differences between Cialis and Viagra is how long it lasts.

Cialis can last for up to 36 hours, which allows for spontaneity and flexibility. In contrast, Viagra only lasts between 4 to 6 hours.

Is one better than the other?

One can take Cialis or Viagra 30 or so minutes before engaging in sexual activity, and they will work the same way.

For those looking for more flexibility in their sex life, Cialis may be the better choice. The low 5mg to 10mg dosage once daily builds up in the body so men can have more spontaneous sex.

Can you drink taking Viagra or Cialis?

Drinking when taking a PED5 inhibitor to treat erectile dysfunction can be dangerous.

Both alcohol and PED5 inhibitors widen the blood vessels and decrease blood pressure. The combination can be life-threatening.

Additionally, alcohol can reduce the effectiveness of Viagra and Cialis.

What drugs interact with Cialis or Viagra?

Whether you take Cialis daily or Viagra every once in a while, there are potential risks of drug interactions.

  • Nitrates. Angina prevention medication combined with a PED5 inhibitor can result in a dangerous drop in blood pressure.
  • Alpha-blockers. Used to treat blood pressure and can cause a significant drop when taking Cialis or Viagra.
  • Blood pressure medication. ED medication may react with particular blood pressure medicine. Consult with your physician.
  • Recreational drugs. Mainly stimulants can decrease blood flow and cause a heart attack or stroke.

What if Cialis and Viagra aren't working?

There may be other issues that need to be resolved in order to heal ED. Here are a few possible reasons to consider.

Underlying health conditions

Specific health conditions can stop the body's ability to achieve an erection.

  • Heart disease
  • High cholesterol
  • High blood pressure
  • Peyronie's disease
  • Diabetes
  • Obesity
  • Parkinson's disease
  • Multiple sclerosis
  • Low testosterone
  • Surgery or injury

The causes of ED do not have to be physical, either. Psychological and emotional issues can cause a man to struggle with erectile dysfunction.

  • Depression
  • Stress
  • Anxiety
  • Relationship woes that cause stress

A change in lifestyle

It's proven that cigarette smoking is often associated with ED. Quitting smoking may make achieving an erection more likely.

Alcohol dependency is also a factor in some men struggling with erectile dysfunction, including problems with desire, arousal, and function.

Another lifestyle risk factor is obesity. Exercise and the proper diet can do a lot to improve a person's sex life. In one study, 79% of men with ED have a BMI of 25kg or more.

Alternative treatment options for ED

You may decide PDE5 inhibitors are not for you, or you've found that they aren't doing what you need them to.

You have other erectile dysfunction treatment options.

  • Testosterone therapy. Low testosterone (hypogonadism) is one of the leading causes of ED.
  • Therapy and counseling. Addressing psychological issues can sometimes help with erectile dysfunction.
  • Sexual health supplements. Supplements that contain L-Arginine, like VitaFLUX, are proven to help address low testosterone, energy levels, and libido.

Takeaways

Avoid taking Cialis in the morning and Viagra at night. Taking more than one PED5 inhibitor daily can increase the likelihood of serious side effects.

Cialis comes with two choices in dosage. A low-dose daily dose that gives you flexibility in when you have sex, and a higher dose that acts like Viagra.

Viagra is taken 30 minutes before you anticipate having sex, and it can help with an erection for up to a few hours. Consult with your doctor on the best treatment option.

If ED meds don’t work, a supplement with L-Arginine, like VitaFLUX, may be worth considering.

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The Promescent Team

The Promescent Team

Our team has over a decade of experience in the sexual wellness field and are experts in sexual dysfunctions, like premature ejaculation. We help couples and individuals better understand treatment options available for different types of sexual needs and educate the public on all things related to intimacy. All of our authored content is medically reviewed for accuracy and reliability.

Sources:

Absorption Pharmaceuticals LLC (Promescent) has strict informational citing guidelines and relies on peer-reviewed studies, academic or research institutions, medical associations, and medical experts. We attempt to use primary sources and refrain from using tertiary references and only citing trustworthy sources. Each article is reviewed, written, and updated by Medical Professionals or authoritative Experts in a specific, related field of practice. You can learn more about how we ensure our content is accurate and current by reading our editorial policy.

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The Content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.

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