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Ships within 48 hours · Estimated delivery Jun 14 - Jun 19
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Description
OxygenThe remarkable scientific story of how Earth became an oxygenated planet The air we breathe is twenty one percent oxygen, an amount higher than on any other known world. While we may take our air for granted, Earth was not always an oxygenated planet. How did it come to be this way? Donald Canfield covers this vast history, emphasising its relationship to the evolution of life and the evolving chemistry of Earth. He guides readers through the various
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.3 ★★★★★
Based on 555 reviews
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Product Reviews
★★★★★ 4
Would continue to buy again
Size: 27 Count (Pack of 1)
Purchased twice. I wish they made these bigger. Moisturizing mouth well and flavor is pleasant and long lasting. I have Sjogrens and suffer with dry eye and mouth. These work better than regular lozenges.
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Reviewed in the United States on April 2, 2026
★★★★★ 5
Works great
Size: 27 Count (Pack of 1)
These lozenges work really well and taste good
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Purse companion
Size: 27 Count (Pack of 1)
I carry these lozenges in my purse. It tastes good, and truly helps with dry mouth!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
★★★★★ 5
Great lozenge! Tastes very good.
Size: 27 Count (Pack of 1)
Very effective and tastes good. I will continue using it after my chemo treatment is finished.
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Reviewed in the United States on May 1, 2026
★★★★★ 3
Dry mouth is miserable.
Size: 27 Count (Pack of 1)
The mouth lozenges for dry mouth were excellent at first, but I have dry mouth all day, and they started upsetting my stomach. I guess I was taking too many. Since I switched to the spry, I don't have a problem. I keep the a small bottle of the spray in my pocketbook, because I need it sporadically. It is probably different with each individual.
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Reviewed in the United States on April 11, 2026
