A - Human Necessities – 61 – K
Patent
A - Human Necessities
61
K
167/318
A61K 7/16 (1990.01)
Patent
CA 2026907
The invention relates to oral compositions such as toothpastes which contain Vitamin C and a copper compound such as coppersulphate. The tendency of these compositions to discolour, particularly if they also contain a zinc compound such as zinc citrate, can be reduced by the inclusion in the compositions of a stannous compound such as stannouspyrophosphate.
Bereskin & Parr
Plc Unilever
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