The constitution of Nigeria does protect free speech. No 2 Every person shall be entitled to freedom of expression, including freedom to hold opinions and to receive and import ideas and information without interference. Provided that the provisions of this section shall not derogate from the powers conferred by this Constitution on the Independent National Electoral Commission with respect to political parties to which that Commission does not accord recognition. The above free speech language does not refer specifically to commercial speech.
Commercial speech is afforded less protection than regular speech.
No specific mention is made of freedom of commercial speech, but political speech is reflected in provisions on association. The Courts are primarily responsible for ensuring that commercial speech is protected.