21st Century Calcium 600 mg Supplement (400 Tablets)
From the manufacturer
21st Century's calcium carbonate runs 600mg per tablet across a 400-count bottle, which works out to a low cost per serving. Carbonate is the most economical calcium form but absorbs best taken with food. Vegan-friendly, non-GMO and gluten-free.
$0.03last seen on Amazon
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- Cost per serving
- <$0.001
- Servings
- 400 × 600mg
Lasts ~400 days at the label dose · ~$0.00/month
💚 Top value — cheapest quartile of the 125 Calcium deals we track.
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The silence is deafening
Lead with cost-per-dose, not vibes.