Your Users Drink Tea. Black Tea Has 12–28mg Oxalate Per Cup.
An Ember user drinking 4 cups of black tea per day consumes 50–100mg of oxalate before eating anything. That’s half or more of the recommended daily limit for kidney stone patients. They have no idea.
Partnership Proposal — Not Yet Active
OxalateGuard is not currently partnered with Ember. This page outlines why we believe our products are a natural fit and how a partnership could benefit both Ember users and kidney stone patients. We'd love to make it happen.
The Hidden Oxalate in Every Cup
Black Tea: 12–28mg Oxalate Per Cup
Peer-reviewed data from Honow 2010 and Siener 2021 shows black tea contains significant oxalate. Four cups daily = 50–100mg, potentially exceeding the entire recommended daily limit for stone formers.
Your Users Optimize Temperature, Not Health Impact
Ember users are deliberate about their beverages. They choose precise temperatures. But they have zero visibility into the oxalate content of what they’re drinking at that perfect temperature.
Matcha and Green Tea Are Even Higher
Matcha can contain 30–40mg oxalate per serving. Turmeric lattes, chai with cinnamon — popular specialty beverages in the Ember demographic skew heavily toward high-oxalate ingredients.
How OxalateGuard Complements Ember
Beverage-Specific Oxalate Intelligence
We track oxalate for every type of tea, coffee, and specialty beverage. Black tea, green tea, matcha, herbal teas, turmeric lattes — each with peer-reviewed oxalate values.
A Health Feature No Competitor Has
No smart mug tells users the oxalate content of their drink. Ember can be the first to connect beverage choice to kidney health — a feature that differentiates in a crowded drinkware market.
Low-Oxalate Swap Suggestions
Prefer black tea? Try white tea (much lower oxalate). Love matcha? Consider lower-risk alternatives. Our database includes 1,300+ food and beverage swaps.
Engage the 33M Kidney Stone Population
Kidney stone patients are told to “avoid tea.” Most don’t know which teas or how much is safe. An Ember + OxalateGuard integration gives them data-driven beverage choices.
How a Partnership Could Work
Beverage Logging Integration
When an Ember user sets their mug to “Black Tea” or “Green Tea,” OxalateGuard logs the oxalate content automatically. Zero extra effort.
Daily Oxalate Dashboard
Users see how their beverage choices contribute to daily oxalate intake alongside food. Four cups of black tea might use up their entire daily budget.
Smart Swap Suggestions
When a user’s tea habit pushes them over their limit, suggest lower-oxalate alternatives: white tea, herbal tisanes, or coffee (much lower oxalate than tea).
Other Device Partnerships
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Frequently Asked Questions
Is OxalateGuard affiliated with Ember?
How much oxalate is in common teas?
Who would benefit from this integration?
What data would Ember users see?
OxalateGuard is not affiliated with Ember Technologies, Inc.. Ember is a trademark of Ember Technologies, Inc.. This page describes a potential partnership opportunity and does not imply any existing business relationship.