To get the best from your treament, please read the following carefully.

The safe indicated dose of Vikalis VX Chewable (Tadalafil) within a 24 hour period is 20mg (1 chewable tablet). This medicine will become effective within 60 minutes. Effective treatment time is 36 - 72 hours. Always take this medicine with a large glass of water.

You should only take a Vikalis VX Chewable (Tadalafil) when you plan to have sex — it is not intended as a regular medication.

Avoid large or fatty meals close to when you intend to take the medicine. Alcohol will reduce the effectiveness of this Vikalis VX Chewable (Tadalafil).

Vikalis VX Chewable contains Tadalafil which acts on the erectile tissue of the penis to increase the blood flow to cause an erection. During sexual stimulation, nitric oxide is released in the erectile tissue of the penis which activates the enzyme guanylate cyclase.

Vikalis VX Chewable (Tadalafil) is not suitable for everyone. Patients under treatment for the following conditions; or any ongoing managed condition, should consult their doctor prior to taking Vikalis VX Chewable (Tadalafil):

  • Heart Related & Cardiovascular diseases including aortic stenosis, idiopathic hypertrophic subaortic stenosis and general ventricular outflow obstruction
  • Stroke, myocardial infaction (heart attack) or serious arrhythmia
  • Cardiac failure or coronary artery disease causing unstable angina
  • Blood Pressure related diseases including Hypertension & Hypotension and patients with severley impaired autonomic control of blood pressure
  • Resting hypotension (low blood pressure) of (BP <90/50)
  • Resting hypertension (high blood pressure) of (BP >170/110)
  • Retinitis pigmentosa (genetic disease of the retina)
  • Sickle cell or other related anaemias
  • HIV (specifically on treatment with protease inhibitors)
  • Organ donor recipients

Along with its needed effects, Vikalis VX Chewable (Tadalafil) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Commonly reported side effects of Vikalis VX Chewable (Tadalafil) include: headache, flushing and nausea. See below for a comprehensive list of adverse effects.

Common Side Effects

These common side effects are connected to dehydration and usually diminish by increasing water intake.

  • Facial redness or flushing
  • Headache
  • Blocked nose
  • Dryness in eyes
  • Mild Nausea
  • Muscle pain, back pain, pain in your arms or legs

Less Common Side Effects

The following side effects of Vikalis VX Chewable (Tadalafil) may occur that usually do not need medical attention. These side effects are not dangerous and may normally diminish as your body adjusts to the medicine. Patients presenting with these side effects generally do not need to stop taking Vikalis VX Chewable (Tadalafil).

Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

  • Light sensitivity
  • Light-headed feeling, like you might pass out
  • Ringing in your ears
  • Slight blurred vision
  • Slight blueness in vision

Serious Side Effects (Uncommon)

Although serious side effects are rare, if you experience any the following serious side effects, stop taking Vikalis VX Chewable (Tadalafil) and seek emergency medical care immediately.

  • Chest pain
  • Dizziness during sex
  • Erection longer than 4 hours (Priapism)
  • Nausea
  • Severe decrease or loss of vision
  • Severe decrease or loss of hearing

Patients taking the following medicine types should NOT take Vikalis VX Chewable (Tadalafil):

  • Nitroglycerin medicines
  • Nitroprusside medicines
  • Amyl Nitrate (Recreationally known as poppers)
  • Organ Donor Recipient medicines
  • Azole antifungal medicines taken orally (topical creams for treatment of candida/ thrush are safe)
Active ingredient

Tadalafil 20mg

Becomes effective

60 minutes

Effective treatment time

36 - 72 hours

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