Nitrous oxide laws in Ohio

(2) Except for lawful medical, dental, or clinical purposes, no person shall knowingly dispense or distribute nitrous oxide to a person under age twenty-one.
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(F) Beginning July 1, 2001, a person who dispenses or distributes nitrous oxide shall record each transaction involving the dispensing or distributing of the nitrous oxide on a separate card. The person shall require the purchaser to sign the card and provide a complete residence address. The person dispensing or distributing the nitrous oxide shall sign and date the card. The person shall retain the card recording a transaction for one year from the date of the transaction. The person shall maintain the cards at the person's business address and make them available during normal business hours for inspection and copying by officers or employees of the state board of pharmacy or of other law enforcement agencies of this state or the United States that are authorized to investigate violations of Chapter 2925., 3719., or 4729. of the Revised Code or the federal drug abuse control laws.
The cards used to record each transaction shall inform the purchaser of the following:
(1) That nitrous oxide cartridges are to be used only for purposes of preparing food;
(2) That inhalation of nitrous oxide can have dangerous health effects;
(3) That it is a violation of state law to distribute or dispense cartridges of nitrous oxide to any person under age twenty-one, punishable as a felony of the fifth degree.
(G)(1) Each cartridge of nitrous oxide dispensed or distributed in this state shall bear the following printed warning:
"Nitrous oxide cartridges are to be used only for purposes of preparing food. Nitrous oxide cartridges may not be sold to persons under age twenty-one. Do not inhale contents. Misuse can be dangerous to your health."

(3) No person, at the time a cartridge of nitrous oxide is sold to another person, shall sell a device that allows the purchaser to inhale nitrous oxide from cartridges or to hold nitrous oxide released from cartridges for purposes of inhalation. The sale of any such device constitutes a rebuttable presumption that the person knew or had reason to believe that the purchaser intended to abuse the nitrous oxide.