How long does tadalafil take to work?

Tadalafil can work as quickly as 15 minutes after dosing but most report an onset of action of 30 minutes. The maximum concentration of the drug is in the bloodstream after 2 hours.

What is tadalafil used to treat?

Tadalafil is part of a class of medications called phosphodiesterase (PDE) inhibitors. It works by relaxing muscles of the blood vessels and increasing blood flow to particular areas of the body. Tadalafil is primarily used to treat erectile dysfunction, but also functions as a treatment for pulmonary arterial hypertension or enlarged prostate.

Brand and generic names:

Tadalafil is available under two main brand names in the United States, Cialis and Adcirca. The generic form of Cialis is just called tadalafil, but the generic for Adcirca is called Alyq, which also contains tadalafil. Among other names, this medication is also known internationally as Vidalista (sometimes Vidalist) and Cidala.

Tadalafil dosage:

Tadalafil is available in dosages ranging from 2.5mg to 20mg per tablet. Tadalafil is typically only used as needed and taken once per day.

Side effects:

Common side effects for tadalafil are:

  • Headache
  • Stomach upset
  • Back pain
  • Muscle pain
  • Stuffy nose
  • Flushing (warmth, redness)
  • Dizziness

If these side effects last or worsen, tell your doctor or pharmacist.

More serious side effects can potentially occur while taking tadalafil. If you experience nausea, chest pain, or dizziness during sex, stop and get medical help immediately. You could be having a life-threatening side effect.

Get emergency medical help if you have signs of an allergic reaction to this medication, such as hives, difficulty breathing, or the swelling of your face, lips, tongue, or throat.

Stop using tadalafil and call your doctor at once if you have:

  • a light-headed feeling, like you might pass out;
  • an erection that is painful or lasts longer than 4 hours
  • vision changes or sudden vision loss
  • ringing in your ears or sudden hearing loss
  • heart attack symptoms – chest pain or pressure, pain spreading to your jaw or shoulder, nausea, sweating

Tadalafil cost:

As with most medications, the cost of tadalafil varies based on a few factors, like insurance coverage and location but you can use eNavvi to determine how much this medication will be for you.

Because tadalafil is a generic medication, it is available at a much lower cost than its brand name counterpart Cialis. Cialis prices can range from $12 to $70 or more per pill depending on the dose, but generic tadalafil is a fraction of the cost ranging from $1 to $25 or more per pill for the very same dosage.


The information included in this page is not a substitute for medical advice. The list of side effects may not include all side effects as drugs can affect all people differently. Any dosage information may not include all dosage information. It is important to discuss with a medical professional that knows your medical history well which dosage is right for you and if there are any potential risks or possible side effects. Our goal is to provide relevant information but this page may not include all up-to-date information.

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