Tablets with improved friability
Tablets are prepared with friability reducing agents to yield tablets that are more resistant to breakage or crumbling, but with satisfactory hardness. The friability reducing agents include low molecular weight polyethylene glycol as well as similar agents exhibiting at least three percent (3%) hydroxide moieties and a water solubility of at least eighty percent (80%) (w/w %) in room temperature water. The tablets may comprise an active agent and excipient of almost any type, and about 0.1-about 0.5% by weight friability reducing agent. They exhibit a hardness of at least eighty percent (80%) of the same tablet prepared without the friability reducing agent.
1. A denture cleanser in the form of a compressed tablet exhibiting reduced friability, wherein said denture cleanser comprises a bleach, an excipient compatible with said bleach, and an agent to reduce friability, wherein said agent to reduce friability is PEG-400 present in amounts of about 0.1% -0.6% by weight of the tablet, said compressed tablet exhibits a hardness of at least 4.7 kp and wherein said compressed tablet comprising said PEG-400 exhibits a hardness of at least eighty percent (80%) of the hardness exhibited by said compressed tablet prepared in the absence of said PEG-400.
2. The denture cleanser compressed tablet of claim 1 , wherein said tablet comprises an effervescent couple which combine to release carbon dioxide when the tablet is moistened.
3. The denture cleanser compressed tablet of claim 1 , wherein said active agent comprises an aroma.
4. The denture cleanser compressed tablet of claim 1 , wherein said excipient is a stabilizer, lubricant, a binder, a disintegrant, or a coating.
5. The denture cleanser compressed tablet of claim 2 , wherein said effervescent couple comprises sodium bicarbonate and acid selected from the group consisting of citric acid, fumaric acid, malic acid and mixtures thereof.
6. The denture cleanser compressed tablet of claim 5 , wherein said acid comprises citric acid.
7. The denture cleanser of claim 1 wherein said denture cleanser comprises a detergent.
8. The denture cleanser compressed tablet of claim 1 , wherein said bleach is a carbonate, persulfate or perborate.