Rosuvastatin and Calcium: No Clinically Significant Interaction
Rosuvastatin can be taken concurrently with calcium supplements without dose separation, as there is no clinically significant drug-drug interaction between these agents.
Key Evidence
The provided evidence extensively covers rosuvastatin drug interactions with cardiovascular medications, immunosuppressants, and other agents, but notably does not identify calcium supplements as causing any interaction with rosuvastatin 1, 2, 3.
Why This Matters
Rosuvastatin's unique pharmacokinetic profile: Unlike some statins that are extensively metabolized by CYP3A4, rosuvastatin undergoes minimal cytochrome P450 metabolism and exhibits high hydrophilicity and hepatoselectivity 3
Calcium absorption mechanisms: Calcium supplements (carbonate or citrate) are absorbed through different pathways that do not interfere with rosuvastatin's hepatic uptake via organic anion transporter protein 1B1 (OATP1B1) or its minimal metabolism 4
The Only Relevant Antacid Consideration
The FDA label specifies that when taking rosuvastatin with aluminum and magnesium hydroxide combination antacids, rosuvastatin should be administered at least 2 hours before the antacid 2. This is specific to aluminum/magnesium antacids—not calcium supplements.
Clinical Recommendations
Take rosuvastatin and calcium supplements together or separately based on patient convenience—timing does not matter
No dose adjustments needed for either medication when used concurrently
Continue standard monitoring for rosuvastatin therapy (muscle symptoms, liver enzymes) as calcium does not increase these risks
Common Pitfall to Avoid
Do not confuse calcium supplements with aluminum/magnesium antacids. Only the latter requires dose separation from rosuvastatin 2.