Supplement stacks / Calcium + Melatonin

Can You Take Calcium with Melatonin?

Calcium and melatonin can generally be taken together, but individual responses may vary. Both supplements have limited evidence regarding their interactions and contraindications, necessitating consultation with a healthcare provider before use.

Safety at a glance
Medium risk
Safety score6/10

Conservative, AI-assisted reading of publicly available medical sources (NIH, Mayo Clinic, WebMD, Examine.com). Informational only — it can't account for your medications, conditions, or genetics.

Calcium

Calcium is essential for bone health and may support muscle function. However, excessive intake can lead to hypercalcemia and related complications.

Typical dosage: 1000-1200 mg daily

Common side effects:
  • Constipation
  • Nausea
  • Stomach upset
Warnings:
  • Consult healthcare provider if you have kidney disease or are on certain medications that affect calcium metabolism.
Melatonin

Melatonin is a hormone that regulates sleep-wake cycles. It is generally considered safe for short-term use, but long-term effects are not well studied.

Typical dosage: 0.5-5 mg daily, taken 30-60 minutes before bedtime

Common side effects:
  • Drowsiness
  • Dizziness
  • Headache
Warnings:
  • Consult healthcare provider if you are pregnant, nursing, or taking medications that affect sleep.
Timing

Calcium can be taken at any time of day, while melatonin should be taken in the evening before sleep for optimal results.

Frequently asked questions

Can you take Calcium and Melatonin together?

Calcium and melatonin can generally be taken together, but individual responses may vary. Both supplements have limited evidence regarding their interactions and contraindications, necessitating consultation with a healthcare provider before use.

How safe is the Calcium and Melatonin combination?

Our analysis of publicly available medical sources scores this combination 6/10 (medium risk). This is an informational estimate, not medical advice — always confirm with a healthcare professional.

When should you take Calcium and Melatonin?

Calcium can be taken at any time of day, while melatonin should be taken in the evening before sleep for optimal results.

Check your full stack

Taking more than these two? Run your complete supplement list — plus any medications — through the live checker for a combined analysis.

Analyze my stack
Personalize it with your DNA

Genetics change how you process supplements like these. Upload raw 23andMe or Ancestry data for a personalized supplement report.

See the DNA report

Analysis generated July 14, 2026 · Sources include NIH, Mayo Clinic, WebMD, and Examine.com · How our analysis works