Pruvit KETO//OS NAT Heart Tart

Not only is KETO//OS Heart Tart dairy and gluten-free, but it’s also kosher and vegan friendly; making it a great option for everyone! With a refreshing, great tasting flavor (it’s one of our favorites), and a superior ketone delivery system designed for easy absorption and lightning fast results, boosting your ketone levels is easier and tastier than ever before.


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Promote Cellular Regeneration with Pruvit Keto//OS Nat Heart Tart

This drink delivers advanced ketone nutritionals that can promote cellular regeneration, energy and longevity–all in a flavorful beverage. You can carry these packets anywhere and just mix them with cold water for a quick pick-me-up.

Just dissolve one packet in 12 to 16 ounces of cold water, and shake vigorously to mix. You can drink the beverage with or without food. Each packet includes our N8 Bioavailability Blend™ with AC-11, so Pruvit’s Keto//OS Max Heart Tart can help repair DNA damage, speed the healing process, strengthen endurance and maximize physical performance.

Ingredients and Nutrition Information

Each packet has 45 calories, 5 grams of carbohydrates, 4 grams of sugar alcohol, 16 mg of vitamin B6 and 100 mcg of vitamin B12. Other ingredients include:

  • 270 mg calcium
  • 910 mg sodium
  • 12.6 g of N8 Bioavailability Blend
  • AC-11, the inner bark of Uncaria Tomentosa
  • Max BHB, our signature blend of R-Beta Hydroxybutyrate



Ketone Technology

Healthy couple outdoorsOur beverages utilize advanced ketone technology to provide you with ketone bodies derived from natural products in the lab. Research conducted by the Office of the Navy and the U.S. Department of Defense found that ketone bodies, which are the result of fatty acid synthesis in the body, provide a boost to organs such as the skin, heart, brain and kidneys. Dr. Dominic D’Agostino, Ph.D., assistant professor at the University of South Florida College of Medicine, led the team of researchers who discovered that supplements with ketone bodies could dramatically improve the physical and mental performances of those who took them.

Pruvit based its KETO OS system on D’Agostino’s research. The research proved that supplements could reduce oxygen toxicity while increasing the energy of Navy Seals using SCUBA equipment underwater. It’s very difficult to get the maximum benefits that ketone metabolites can deliver without some form of supplementation. KETO//OS has proven effective in dieting, maintaining high energy levels and focusing more effectively.

Benefits of Pruvit Keto//OS Max Heart Tart

Besides the health benefits, additional benefits of Pruvit Keto//OS Nat Heart Tart formula are convenience and flavor. You can get the beverage in non-caffeine and caffeinated forms depending on your preferences.

The benefits of Pruvit Nat Heart Tart include:

  • Can put your body in a state of ketosis in less than an hour.
  • You’ll likely feel happier and healthier in this state as your body burns fat instead of sugar or glucose.
  • Pruvit Keto//OS Nat Heart Tart delivers instant energy and increased mental focus.
  • Your appetite can decrease.
  • Regular doses of this refreshing beverage can result in a better mood and better sleep.
  • DNA repairs can result in anti-aging benefits such as clearer skin.
  • Ketone energy helps you wake up refreshed, recharged and cleared of morning brain fog.

Customer Reviews

Pruvit KETO//OS NAT Heart Tart
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Great taste

Have only tried these for a couple of days (after a friend sent a few sachets) so can't comment on the health benefits yet, but the taste is amazing! Keen to try the other products.
Brad, Perth - 09/08/2018


Enjoy This Healthy Pruvit Nat Heart Tart Recipe


  • 1 packet of Pruvit Nat Heart Tart
  • ½ cup cream cheese
  • ½ cup strawberries
  • ¼ cup butter
  • 1 tbsp vanilla
  • Coconut shreds


Mash the strawberries with the vanilla. Combine the other ingredients in a food processor or blender, and process them until smooth. Shape the mixture into balls or heart shapes, and coat with coconut. Freeze for 20 or 30 minutes.