Would Cuba Libre consumption help with insomnia? Think carefully first, then make a decision:
Cuba Libre is a highball cocktail consisting of cola, rum, and in many recipes lime juice on ice. Traditionally, the cola ingredient is Coca-Cola ("Coke"), and the alcohol is a light rum such as Bacardi. Coca-Cola typically contains caffeine. Caffeine consumption often promotes insomnia. So, the answer is no.