0 calories per tea bag. Can help support a healthy heart. America's favorite tea. Picked at the peak of freshness. Naturally smooth taste. Love your heart. Drinking unsweetened Lipton Black Tea can help support a healthy heart (Unsweetened Lipton Black Tea contains about 170mg of flavonoids per serving, no calories, no added sugars and it is 99.5% water). It's also a delicious way to hydrate so grab a cup today. And tomorrow. And the next day! Tastes great. Hot or cold. American Heart Association. Life is why. Lipton is a proud national Life is Why sponsor.