Men's sexual issues like erectile dysfunction and impotence are also treated with Tadalista 20 . Only men who are at least eighteen years old can use this medication. Tadalafil, one of the drug's ingredients, helps men's penile tissue receive more blood flow and has the effect of relaxing its muscles. Take this medication half an hour prior to sexual activity so that you can enjoy quality time with your partner. This medication can be taken either before or after food. Consume this medication with water; do not crush or chew it. This medication has a 36-hour half-life.