Tadasoft 40 mg is typically taken about 30 minutes to 1 hour before anticipated sexual activity. This allows time for the medication to take effect.As with other PDE5 inhibitors, Tadasoft 40 mg requires sexual stimulation to be effective. It does not cause automatic erections; sexual arousal is necessary.The effects of tadalafil-based medications can last for a longer duration compared to some other PDE5 inhibitors, allowing for an extended period of opportunity for sexual activity.