Tadalista 40 is used for male impotence. This medicine contains the main ingredient Tadalafil. Which helps in increasing the blood flow to the penis in men. This drug has some good effects and some bad effects. Common symptoms of this drug include headache, dizziness, and feeling sick. You should consult your doctor if you experience any side effects. This medicine should be taken only once in 24 hours. This medicine should not be used in excess.