Abstract: The present invention relates to extended-release suspension composition. The present invention specifically relates to extended-release suspension composition comprising active ingredient and pharmaceutically acceptable excipients, wherein said composition is in the form of powder for suspension or a ready to use suspension. The present invention specifically relates to extended-release suspension composition comprising active ingredient and pharmaceutically acceptable excipients, wherein said composition is devoid of uncoated active ingredient-ion exchange resin complex portion and polyvinyl acetate. The present invention also relates to extended-release suspension composition comprising one or more functional barrier coatings on active ingredient-ion exchange resin complex, wherein said functional barrier coatings comprises hypromellose and/or talc.