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Viactiv Calcium + D3 Ultra Strength Soft Chews bottle
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Viactiv Calcium + D3 Ultra Strength Soft Chews Review

Viactiv Calcium + D3 Ultra Strength Soft Chews are a dietary supplement designed to support bone health. Each chew provides a combination of calcium to strengthen bones and vitamin D3 to enhance calcium absorption, offered in a convenient and tasty soft chew format.

Product Focus: Occasional Heartburn: Fast ReliefAlso graded for:Bone HealthBlood SugarRegularity: Long-Term ReliefAlso covers:Digestion
Tier ⓘ
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Members see this product's tier and why. Tiers run from 1, the strongest evidence, to 5. How we grade →
Evidence ⓘ
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How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.
Positive Reviews
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Biohacker Mentions
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Cost per month
$8
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Study, Trial or Testing Result Summary

MembersHuman studies

Each chew has 650 milligrams of calcium as calcium carbonate, than the 420 milligram dose that in studies. In a trial of 26 adults with meal-related heartburn, one 420 milligram dose of calcium carbonate acid in the food pipe and heartburn compared with a dummy pill. …

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Review Totals and Summary

Members5,927 reviews
5,927 reviews · Walmart 3,805 · Amazon 1,523 · Target 441 · Viactiv 116 · IHerb 42

Real users have left thousands of reviews for Viactiv Calcium + D3 Ultra Strength Soft Chews across major retailers, and the overall sentiment trends very . customers highlight the chews as an easy and tasty way to supplement their calcium and vitamin D intake, with noting that they stick to taking them daily because the flavor is appealing and the texture enjoyable – a notable difference from bulky pills or chalky tablets. …

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Biohacker Summary

MembersWhat our biohacker panel says

Those who it point to bone , plus its role in nerves, muscles and the heart, and one suggests 1,000 to 1,200 milligrams a day, which can come from calcium carbonate or calcium citrate. The one who lists calcium carbonate among synthetic supplements to avoid, while the voices name food sources such as dairy, sardines and kale, and one is weighing whether he needs a supplement at . …

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RAL Summary

MembersThe tier and why

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More Details

MembersBody systems · Combine with · Possible side effects

Body systems: Digestive system. Combine with and possible side are for members.

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Supplement Facts

Includes 2g Added Sugars 2 g · Vitamin D 20 mcg · Vitamin K 40 mcg
Supplement Facts
Serving Size 2 Chews
Servings Per Container 90
Amount Per Serving% Daily Value
Calories20
Total Carbohydrate3 g1%
Total Sugars2 g†
Includes 2g Added Sugars2 g4%
Vitamin D (as cholecalciferol)20 mcg100%
Vitamin K (as phytonadione)40 mcg33%
Calcium (as calcium carbonate)650 mg50%
Sodium15 mg<1%
* Percent Daily Values are based on a 2,000 calorie diet.
† Daily Value not established.

Other ingredients: Calcium Carbonate, Corn Syrup, Sugar, Hydrogenated Coconut Oil, Water, Cocoa Processed with Alkali, Non-Fat Dry Milk, Corn Syrup Solids, Glycerin, Salt, Soy Lecithin, Natural and Artificial Flavors, Cholecalciferol (Vitamin D3), Phytonadione (Vitamin K1).

Directions: SUGGESTED USE: Adults and children 12 years of age and older, chew 2 chews daily. Not formulated for use in children.

Barcode (UPC) 857106004490 · Label source: iHerb · Report a label change

Where to Buy

Viactiv · Amazon · iHerb
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Graded October 24, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.