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What Are the Best Tips for Buying Coenzyme Q10?

By Lynelle Harmon
Updated May 17, 2024
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Coenzyme Q10, also called CoQ10, occurs naturally in the cells of the body. The enzyme acts as an antioxidant, reducing potential damage caused by free radicals. Coenzyme Q10 is available as a supplement that may aid those who are older, as the natural enzyme production decreases with age, or those battling health conditions such as cancer or fibromyalgia. It's important to consider dosage form and strength, potential interactions or side effects, and purchase price when buying coenzyme Q10.

The enzyme is available in several dosage forms that include soft-gels, hard-gels, and tablets. Soft-gels are the best choice when purchasing coenzyme Q10, as they dissolve easiest in the stomach. the pill should be taken with a fatty meal since it is fat soluble shortly before bed to allow the body undisturbed time to process the dose.

There is an established dosage range for adults that also dictates the strengths of the supplements that are sold. Adults should take between 30 to 200 milligrams (mg) per day, with the exact dosage tailored to personal need. When buying coenzyme Q10, it’s best to get a strength that requires a once-a-day dosage. It’s not advised to give the supplement to children unless directly advised to do so by a doctor.

Patients with certain medical conditions should consult a doctor prior to buying coenzyme Q10. This supplement does carry some risk of potential drug interactions that may render the other medications ineffective. Prescription drugs that may create adverse interactions include those in the classes of chemotherapy, blood thinners, and blood pressure medications.

Associated side effects of this supplement are minor and not likely to dissuade most interested in buying coenzyme Q10. The main side effect is merely a mild stomachache. Coenzyme Q10 can lower blood pressure in diabetics, so patients should carefully monitor blood sugar levels during dosage, stopping dosage immediately if adverse effects are noticed. Not enough studies have been done to determine whether or not it is safe for pregnant women to take, so your physician should be contacted before taking this or any other types of supplements.

Price may become the deciding factor when buying coenzyme Q10, as the supplement can be rather pricey. Checking drugstore advertisements can be a great advantage, as they often offer coupons or sales. Deals can also be found online, but should only be made from reputable shops, as scam sites may sell inactive supplements or capsules packed with harmful fillers.

WiseGeek is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.

Discussion Comments

By ZipLine — On Sep 12, 2013

I've been taking 150mg of coenzyme q10 in tablet form daily for the past week. I don't know why but it's giving me diarrhea. Do the soft-gels cause the same side effect?

By ddljohn — On Sep 11, 2013

@ankara-- Of course, coenzyme q10 being stored in fat tissue can become a problem if it's overdone. But if you don't take more than the daily recommended daily dose and take a break every so often, I don't think it will be a problem.

I take coenzyme q10 30mg/day capsules but I don't take them every day. I usually take it once or twice a week at most.

As far as I know, it takes about four days for coenzyme q10 to leave the body. So I figure that taking it once a week will not allow for it to be stored in excess and cause problems.

Also, I use a reputable supplement brand without additives and I asked my doctor before starting them.

By bluedolphin — On Sep 10, 2013

As far as I know, fat soluble vitamins get stored in the body and the excess is not excreted via urine like water soluble vitamins.

Is it a good idea to take coenzyme q10 supplements for a long time? Won't it cause problems when it builds up in the body?

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