Nearly 70% of Americans are on drugs – prescription drugs, that is – according to a recent study by the Mayo Clinic and the Olmsted Medical Center. And over half of Americans take dietary supplements. That means there’s a significant number of people who take both.
So, you are proactive and take charge of your health. You get regular check-ups, try to follow your doctor’s advice, and take your prescription medications as directed. You also read health-related articles, like this one! Maybe you recently read that Omega-3’s are the latest thing, and everyone should be taking them. Fish oil supplements are an excellent source of these essential fatty acids, so you run out and buy fish oil capsules to ensure you’re all set on Omega-3’s.
But wait!!! You take Warfarin (Coumadin), a prescription blood thinner. That means that taking Omega-3-rich fish oil, which also has a blood-thinning effect, could actually harm you!
This is what health care providers refer to as a “negative drug-nutrient interaction.” That means that some nutrients or supplements don’t work well with certain medications. It also means that if you take prescription medications, it is extremely important to check with your doctor, pharmacist, or nutritionist before adding new supplements to your health care program.
Common negative interactions between drugs and supplements:
- Warfarin (Coumadin) and Omega-3 Fatty Acids – Fish oil and other Omega-3 supplements may increase blood thinning to dangerous levels when taken with prescription blood thinners.
- Oral Contraceptives and St. John’s Wort – This botanical supplement may decrease the effectiveness of birth control pills.
- Antibiotics (Cipro, Doxycycline, Tetracycline, etc.) and Mineral Supplements – Mineral supplements can bind with some antibiotics, reducing their effectiveness. If you regularly take a mineral supplement (like Calcium, Magnesium, Zinc, Iron, Copper, or Manganese), be sure to ask your doctor, pharmacist, or nutritionist if you need to stop taking your mineral supplements while on the antibiotics.
- Prozac (Fluoxetine) and L-Tryptophan – This amino acid supplement may a cause undesirable side effects when taken along with the antidepressant, Prozac.
- Taking a statin? You will want to add Coenzyme Q10 (CoQ10) because the average blood concentration of CoQ10 in blood plasma decreases within 30 days by an average of 50 percent (5).
- Taking a blood pressure medication? You should know that taking an iron supplement two hours before or after taking this type of medication can decrease its absorption rate.
- Taking a synthetic thyroid hormone? Look at your supplement facts to be sure you’re avoiding soy, iron and calcium. Soy, iron and calcium, if taken within four hours of taking a synthetic thyroid hormone, may reduce the absorption rate.
Positive interactions between drugs and supplements:
On the flip side, some supplements can actually work with your prescription med’s to increase their effectiveness, decrease side effects, or replace nutrients that the drugs may deplete in your body. This is, of course, referred to as a “positive drug-nutrient interaction.” Check out the examples below:
- Zinc/Copper with AZT – These minerals may decrease the risk of pneumonia and candida infections in people taking AZT by replacing lost mineral stores.
- Milk Thistle with Percocet – This botanical supplement may decrease the side effects of the opioid pain medication, Percocet (Oxycodone-Acetaminophen).
- Fish Oil with Citalopram – The Omega-3 Fatty Acids in fish oil (and other EPA/DHA supplements) may enhance the antidepressant effects of this common SSRI.
Vitamins, minerals, and botanical supplements can be a great pathway to optimum health if taken responsibly. Always tell your doctor about the supplements you’re taking, so he/she can take that into consideration when prescribing your medications. Take your list of supplements with you to your next doctor’s appointment, and discuss it with him/her. And if in doubt, ask your pharmacist or a nutritionist about specific drug-nutrient interactions.
So don’t rule out the Omega-3 supplements you’ve been reading about. These essential fatty acids are great for decreasing chronic inflammation, promoting healthy cholesterol and triglyceride levels, and supporting the health of your cardiovascular and nervous systems. But if you take prescription medications, please check with your doctor, pharmacist, or nutritionist before adding Omega-3’s (and other dietary supplements) to your daily routine.
Big Data
So, where should you go to check whether your prescription medication has any interactions with supplements? My number one answer is your health care practitioner. Your doctor has electronic medical records (EMRs) – big data – at his or her fingertips and can easily scan for potential interactions. In addition, rely on your local pharmacist as they too have access to databases that can quickly and easily scan for areas of caution. In my opinion, pharmacists are one of the most underused and most valuable resources for you.
You’re in Good Hands
One of the reasons why I’m excited to be a medical advisory board member of Persona is because the company is using big data to inform dietary supplement recommendations. Did you know that Persona can quickly and easily cross reference more than 650 possible drug-nutrient interactions? It doesn’t and shouldn’t take the place of your health care practitioner, but it will put you on the right, healthy, path from the start.
Sources:
- Gahche, J. e. (2011, April). NCHS Data Brief: Dietary Supplement Use Among U. S. Adults Has Increased Since NHANES III. Retrieved from CDC Publications and Information Products: http://www.cdc.gov/nchs/data/databriefs/db61.htm
- Mayo Clinic . (2013, June 19). Nearly 7 in 10 Americans Take Prescription Drugs, Mayo Clinic, Olmsted Medical Center Find. Retrieved from Mayo Clinic News Network: http://newsnetwork.mayoclinic.org/discussion/nearly-7-in-10-americans-take-prescription-drugs-mayo-clinic-olmsted-medical-center-find
- Health Notes http://www.myvitaminpacks.com/healthNotes.cfm
- Rx List http://www.rxlist.com
- Rundek T, Naini A, Sacco R, et al. Atorvastatin decreases the coenzyme Q10 level in the blood of patients at risk for cardiovascular disease and stroke. Arch Neurol 2004;61:889-92.