Are the prayers performed by a former alcoholic accepted after his repentance?

We praise Allah for your repentance and ask Him to accept it, for sincere repentance transforms bad deeds into good ones. A warning has been received that the prayers of a wine-drinker will not be accepted for forty days, but this warning may not materialize by Allah's grace and transcendence. Strive to maintain your repentance and beware of returning to wine-drinking.