Tussionex does not have the antihistamine chlorpheniramine, but it does contain hydrocodone.
Tussionex contains two active ingredients: chlorphenamine and hydrocodone.Hydrocodone has a half life of between 4 to 6 hours.Chlorphenamine, on the other hand, has a half life of over 20 hours.
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The difference between a shogun and a samurai is like the difference between a king and a knight.
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