Coenzyme Q10 is a very important enzyme in the human body. Due to the effects of age and certain drugs, levels of it can decrease. Holland and Barrett CoEnzyme Q-10 Capsules contain only coenzyme Q10 in an effort to boost levels of it in the body when taken alongside a healthy diet. Increased levels of coenzyme Q10 are said to improve cardiovascular health and general energy levels.


The only active ingredient in This product is coenzyme Q10. Coenzyme Q10 is a rather ubiquitous coenzyme meaning that it occurs all over the body and has many functions. It is most importantly implicated in the generation of energy within a cell. It plays its part during the third phase of cellular respiration or cell energy production. This phase is known as oxidative phosphorylation. It performs its role by removing electrons from nearby proteins and donating them to others. For this reason when it is circulating in the blood or tissue fluid it is also a very strong antioxidant. Antioxidants remove the negatively charged oxygen radicals which are formed during metabolism and at higher levels damage cells and tissue.


One softgel capsule should be taken daily, preferably with a meal. This supplement contAINS a dosage of 200 mg of coenzyme 10. Although this is a decent amount, there are products which offer up to 250 mg of coenzyme Q10.

Possible Side Effects

There are no listed side effects, however it is not advised for pregnant and nursing mothers to use this supplement. Anyone taking chronic medication or under medical supervision should consult their physician before the use of this product. Although it is not explicitly mentioned by the manufacturer, ubiquinone is known to interact with Warfarin.


One bottle of Holland & Barrett CoEnzyme Q-10 capsules contains 30 capsules and can be purchased online for $46. If you place a repeat order you will receive a 5% ($2.30) discount on all future orders.


The product can be returned within 30 days if the customer is unsatisfied. Holland and Barrett offer a complete money return on this guarantee.

The customer feedback mostly seems to support the product.

Our Holland & Barrett CoEnzyme Q-10 Capsules Review – Conclusion

The manufacturer produces an all-natural product which presents no major side effects. They also offer a discount for subscription and a guarantee on the product.

On its own it seems to be a decent product. However, when we compare it to other coenzyme Q10 supplements, a few of its weaknesses are highlighted. Some  other manufacturers have added extra ingredients to increase the absorption of the coenzyme Q10, which this manufacturer does not and so the efficiency of this supplement may be reduced.

Compared to similar products the guarantee is quite short and the price is very high. The discount for subscription is also only a very minor saving compared to the bulk purchasing options which are available from other manufacturer’s products.

Another complaint is that the product is not readily available so replacing it monthly is sometimes an issue.

Click here to learn about our Top CoQ10 Products.