Iowa Code § 123.107: Unnecessary allegations.

1. In any indictment or information under this chapter, it shall not be necessary:

a. To set out exactly the kind or quantity of alcoholic liquor, wine, or beer manufactured, sold, given in evasion of the statute, or kept for sale.

b. To set out the exact time of manufacture, sale, gift, or keeping for sale.

c. To negative any exceptions contained in the statute creating or defining the offense, which may be proper ground of defense.

2. Proof of the violation by the accused of any provision of this chapter, the substance of which violation is briefly set forth, within the time mentioned in the indictment or information, shall be sufficient to convict such person.