Avanafil (Avana-50) General Information

What is Avanafil (Avana-50) used for?

Avanafil (Avana-50) is used to treat erectile dysfunction (impotence) in men, which is inability to achieve or maintain a hard erect penis suitable for sexual activity, due to insufficient blood flow into the penis. Avana-50 tablets relax the blood vessels in the penis increasing blood flow and causing an erection, which is the natural response to sexual stimulation. However, Avana-50 will only work if you are sexually aroused.

How does Avana-50 work?

Avana-50 tablets contain Avanafil, a phosphodiesterase type 5 inhibitor, that is used to treat erectile dysfunction (impotence) in men. During sexual stimulation nitric oxide is released in the erectile tissue of the penis which activates the enzyme guanylate cyclase. This enzyme increases levels of a chemical called cyclic guanosine monophosphate (cGMP), which relaxes the blood vessels in the penis and allows blood to fill the spongy erectile tissues to cause an erection. Another enzyme called phosphodiesterase type 5 (PDE5) breaks down cGMP preventing blood flow into the penis, which causes loss of an erection. Avanafil in Avana tablets 50mg acts on the erectile tissue of the penis to inhibit the action of PDE5 and increase blood flow to cause an erection. This action of avanafil in Avana tablets 50mg resolves erectile dysfunction by allowing the natural process of sexual stimulation to activate the cGMP mechanism for achieving and maintaining an erection.

How long does Avana-50 last?

Avana-50 should be taken within an hour of planned sex and in most cases it helps you to get an erection in about 30 minutes that will last for around 4 hours, provided you are sexually aroused. Avana-50 tablets do not work if you are not aroused.

What does Avana contain?

Avana-50 tablets contain the active ingredient Avanafil, a phosphodiesterase type 5 inhibitor, used to treat erectile dysfunction (impotence) in men, by increasing blood flow into the penis.

What are the side effects of Avana-50?

The most commonly reported side effects when taking Avana-50 tablets include headache, dizziness or light-headedness, flushing, nasal congestion, dyspepsia (heartburn), nausea. Less common side effects include, visual disturbance, increased tear formation causing watery eyes, changes in blood pressure (hypo and hypertension), sleepiness, dyspnoea (shortness of breath), pain (in the back joints, abdomen).

When should Avana-50 not be used?

You should not use Avana-50 tablets if you:

are allergic to Avanafil or any ingredients in Avana-50

are taking any nitrate medication, such as Nitroglycerin for angina, as it may lead to a severe drop in blood pressure

have liver or kidney disease

have a condition where sexual intercourse is inadvisable due to cardiovascular or heart problems or you have had a heart attack or stroke in the last 6 months

have abnormally high or low blood pressure

have an eye disease like non-arteritic anterior ischaemic optic neuropathy (NAION), which causes loss of vision, or if you have retinitis pigmentosa

have conditions which may predispose to priapism (erections lasting 4 hours or more) such as anatomical deformation of the penis, sickle cell anaemia, multiple myeloma or leukaemia

drink large amounts of alcohol or grapefruit juice

are taking medication that may interact with Avana-50 or may increase your risk for side-effects, antibiotics like Erythromycin and Rifampicin, Verapamil or Diltiazem (for high blood pressure), Ritonavir or Saquinavir for HIV, antifungals like Itraconazole or Ketaconazole, non-selective alpha-blockers like Doxazosin for high blood pressure, Tamsulosin and Prazosin for enlarged prostate, nitrates such as Glyceryl Trinitrate for angina and other heart conditions.

What medications interact with Avana-50?

Several medications interact with Avana-50 tablets and should either not be taken while you are taking Avana-50 or only after discussion and instruction from your doctor:

Drugs that affect Avana: antibiotics like Erythromycin and Rifampicin, Antifungals like Itraconazole or Ketaconazole, Ritonavir or Saquinavir for HIV, Verapamil or Diltiazem for high blood pressure,

Drugs that are affected by Avana-50: non-selective alpha-blockers like Doxazosin for high blood pressure, Tamsulosin and Prazosin for enlarged prostate, nitrates such as Glyceryl Trinitrate for angina and other heart conditions

How should Avana-50 be taken?

You should take one Avana-50 tablet with a glass of water approximately 30 minutes before sexual activity with or without food, although food may delay the effect. The effect of Avana-50 can last as long as 4-5 hours after taking your tablet. You should take no more than one tablet a day and only if you plan to have sex. The dose of Avana-50 that you take should be as recommended by your doctor and may be changed, if the dose you are taking is too strong or too weak.

How long should you take Avana-50?

You should only take one Avana-50 tablet when you plan to have sex; it is not intended as a regular medication.

How should Avana-50 be stored?

You should store your Avana-50 tablets below 25°C in a cool dry place.