21st Century Co-Enzyme Q10 30mg Capsule

21st Century Co-Enzyme Q10 30mg Capsule is an entry-level coenzyme Q10 (CoQ10) dietary supplement from the US brand 21st Century. Each capsule contains 30mg of coenzyme Q10, and the 30-capsule pack available on DoctorOnCall provides a one-month supply at one capsule daily. Its lower strength makes it a practical starting point for adults who are new to coenzyme Q10 or who prefer a modest daily amount.

Coenzyme Q10 is a vitamin-like substance that the body produces naturally and that is found in small amounts in everyday foods, including meat, fish, soybeans and some vegetables. It is needed by the mitochondria – the energy-producing structures in cells – to convert nutrients into energy, and it also works as a fat-soluble antioxidant. Levels in the body gradually decline with age, and cholesterol-lowering statins can reduce them further.

Taking the capsule with or after a meal helps the body absorb coenzyme Q10, since it dissolves in fat. At 30mg, the capsule provides a modest amount compared with higher-strength products, and it is intended to complement – not replace – a varied diet. Anyone taking warfarin, blood pressure medicines, insulin or chemotherapy should talk to their doctor before starting.

Swallow one capsule with a glass of water during or after a meal. A meal containing some fat helps your body absorb coenzyme Q10. Swallow the capsule whole without chewing, and take it at a consistent time each day; if it seems to affect your sleep, move it to breakfast or lunch.

Adults: Take 1 capsule (30mg coenzyme Q10) once daily with or after a meal, or as directed by your doctor or pharmacist. Do not exceed the recommended dose stated on the label unless advised by a healthcare professional. If you miss a dose, take the next capsule at the usual time and do not take two at once. Not intended for children unless advised by a doctor.

Store in a cool, dry place away from direct sunlight, heat and moisture, and keep the container or blister pack tightly closed after each use. Do not store in the bathroom or in a hot car. Keep out of reach and sight of children, and follow any specific storage instructions shown on the product label.

• Common: Mild digestive discomfort such as nausea, upset stomach, heartburn, loss of appetite or diarrhoea; taking the capsule with a meal may help.
• Common: Headache or dizziness in some people, usually mild and temporary.
• Less common: Difficulty sleeping (insomnia) has been reported with coenzyme Q10; if this happens, taking the capsule earlier in the day may help.
• Serious: Allergic reactions such as rash, itching, swelling of the face, lips or tongue, or difficulty breathing are rare – stop taking the product and seek urgent medical attention.
• Serious: Unusual bruising or bleeding, or a change in blood test results (INR) in people taking warfarin – contact your doctor promptly.

• Do not take if you are allergic to coenzyme Q10 or to any other ingredient in the capsule, including any capsule excipient listed on the label (check for soya-derived ingredients if you have a soya allergy).
• Not recommended for children unless advised by a doctor, as the product is formulated for adults.
• Not recommended during pregnancy or breastfeeding unless advised by a doctor, because safety data in these groups are limited.
• People taking warfarin or other blood-thinning medicines should not start this product without first speaking to their doctor.

• Warfarin: Coenzyme Q10 may interact with warfarin and has been reported to reduce its blood-thinning effect; your doctor may need to monitor your INR more closely if you start or stop this product.
• Blood pressure medicines (antihypertensives): Coenzyme Q10 may add to the blood-pressure-lowering effect of these medicines; monitor your blood pressure and tell your doctor if you feel light-headed or dizzy.
• Insulin and other diabetes medicines: Coenzyme Q10 may interact with insulin and could affect blood glucose levels; check your blood sugar regularly and speak to your doctor before starting.
• Chemotherapy: Antioxidant supplements such as coenzyme Q10 may not be compatible with some cancer treatments; always consult your oncologist before taking this product during chemotherapy or radiotherapy.
• Food: Coenzyme Q10 is fat-soluble, so it is best absorbed when taken with a meal that contains some fat.
• Other supplements: Check the labels of multivitamins and other products you take to avoid duplicating coenzyme Q10 intake.

• Make the capsule part of a daily routine, such as taking it after dinner or breakfast, so you do not forget it.
• Take it with food containing some fat, for example eggs, fish or a dish cooked in oil, rather than with plain water only.
• Read the full ingredient list on the pack if you have allergies to soya, gelatin or other ingredients.
• Check other supplements you take for coenzyme Q10 so that you do not exceed your intended daily amount.
• Tell your doctor you take coenzyme Q10 if you are on warfarin, insulin or blood pressure medicines.
• Store the bottle closed and away from heat and humidity, and keep it out of children’s reach.

Precautions: Coenzyme Q10 is a dietary supplement and should not replace a varied, balanced diet or any medicine prescribed by your doctor. Do not stop or change prescribed heart, blood pressure, diabetes or cholesterol medicines because you have started this product. Safety data in pregnancy, breastfeeding and children are limited, so use in these groups only on a doctor’s advice. People with kidney or liver disease, low blood pressure, or an upcoming surgery should seek advice first, and should let their surgeon know they take coenzyme Q10.

When to See a Doctor or Pharmacist: Speak to a doctor or pharmacist before starting if you take warfarin or other blood thinners, blood pressure medicines, insulin or other diabetes medicines, or are receiving cancer treatment. Stop taking the product and seek medical help if you develop signs of an allergic reaction, unusual bleeding or bruising, persistent stomach upset, or marked dizziness.