ALLEGAN, Mich. — Perrigo on Thursday announced that it has initiated shipments of its guaifenesin extended-release tablets in the 600-mg strength, a generic version of Mucinex.

The company expects to initiate its full-scale over-the-counter launch of the store-brand equivalent to Mucinex in blister packaging to its retail and wholesale customers before the end of its current fiscal year in June.

Mucinex 600-mg tablets has estimated annual sales of approximately $135 million, according to Perrigo.

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