Can vitamin D interact with medications?

Vitamin D supplementation interacts with many medications in ways that may affect their clinical efficacy and safety. Vitamin D can counteract the absorption of calcium and alter the biochemistry of drug metabolism. Prednisone-type steroids inhibit vitamin D activation, whereas weight-loss medications impair the absorption of vitamin D. Disclose all supplements to your healthcare professionals.

I have had cases of problems resulting from an uncontrolled combination of vitamin D and calcium. For example, one man was taking cholesterol medications and reported serious muscle pain as a result of excess calcium absorption; another was not controlling his seizures because vitamin D was interacting with his seizure medications. These are known problems and easily preventable. As a safety measure, we must educate consumers about the appropriate use of vitamin D.

Timing modifications will limit potential drug-drug interactions. For example, I recommend that my patients take vitamin D at least 4 hours apart from Orlistat or cholestyramine. I also recommend spacing out doses away from thyroid medications. I encourage my patients to maintain a consistent schedule with phone reminders to enhance effectiveness.

Regular monitoring prevents emergencies. Blood testing every 3 months is recommended when taking vitamins D and medication, especially for those at the highest risk. Calcium levels, kidney function, and medication levels are evaluated. Report any nausea or weakness of muscle to your physician immediately.

Develop a medication safety plan in collaboration with your healthcare team. During each appointment, list all prescriptions and supplements. Consult with your pharmacist about potential interactions. Maintain an updated list in your wallet. This way, you will know instead of assuming vitamin D will be added and not harm your treatments.

Read the full article: The Importance of Vitamin D