Supports bone health and helps maintain healthy calcium levels.
Effective Dose
500-1000mg Calcium, 400-2000 IU Vitamin D3
Onset
2-4 weeks
Cost
Budget
Cycle
No cycling needed; suitable for long-term daily use.
7 things you need to know
What it does
Supports bone health and helps maintain healthy calcium levels.
Worth it?
8/10. Calcium and Vitamin D3 are a very effective combination for supporting bone health, especially for those at risk of deficiency. Vitamin D3 enhances calcium absorption, making this pairing more effective than calcium alone. Supplementing can be helpful for people who don't get enough through diet and sun exposure.
How much to take
500-1000mg Calcium, 400-2000 IU Vitamin D3
Price
Cheap (under $15/month)
How fast it works
Takes 2 to 4 weeks to notice
Safety
Check if: kidney stones (with high doses), hypercalcemia
What people say
Users typically don't 'feel' a direct effect, but may notice improved bone density or reduced risk of fractures over time. Benefits are more preventative than acute.
Calcium is abundant in the earth's crust, and Vitamin D3 can be derived from lanolin (sheep's wool) or synthesized.
"Users typically don't 'feel' a direct effect, but may notice improved bone density or reduced risk of fractures over time. Benefits are more preventative than acute."
Research backing for this ingredient
Some evidence, more research needed
Limited
Yes
Strong agreement among researchers
"Extensive research supports the benefits of calcium and vitamin D for bone health, particularly in preventing osteoporosis and fractures. Vitamin D's role in enhancing calcium absorption is well-established."
Calcium and Vitamin D3 work together to keep your bones strong. Vitamin D helps your body absorb calcium, which is essential for building and maintaining healthy bones. Many people don't get enough from their diet or sunlight, so supplements can help fill the gap.
Products below minimum dose are likely ineffective
When
Any time
How
500-1000mg Calcium, 400-2000 IU Vitamin D3
Food
Take with meals to enhance calcium absorption.
Noticeable benefits typically require consistent intake over several weeks to months.
No cycling needed; suitable for long-term daily use.
Check for specific interactions.
Calcium + D3 is categorized as a mineral.
Scientific consensus score: 9/10.
Evidence quality: STRONG.
Add Calcium + D3 to your stack analyzer or compare it with other ingredients.
Not medical advice. Always consult a healthcare provider.