answer:Hello. Are you sure that it has been discontinued? According to Alaven Pharmaceuticals, the drug HAS NOT BEEN discontinued. In fact, there is a statement on their website that reads ”All Levsin® and Levbid® products are available through normal distribution channels including retail and mail order pharmacies. Occasionally false “Levsin®, Levsin® SL or Levbid® is discontinued” messages can be generated by distributors for products that they do not have in stock that day. Due to a recent surge in demand there may be short term supply shortages at local pharmacies across the country but product is available and pharmacies can find product at various wholesalers.” I suggest you check your sources again. If you truly believe you need an alternative, then two possibilities are Ditropan and Detrol. Good luck.