Last update
5/22/2026
Reviewed By
Overview
SCIENTIFIC SCORE
Possibly Effective
Based on 5 Researches
7
USERS' SCORE
Good
Based on 3 Reviews
8.5
Supplement Facts
Serving Size: 1 Softgel
Amount Per Serving
%DV
Coenzyme Q10 (CoQ10)
100 mg
**
Top Medical Research Studies
9
CoQ10 reduces post-heart attack complications significantly
A randomized, double-blind placebo-controlled trial compared 120 mg daily of coenzyme Q10 to placebo over 28 days in 144 heart attack patients. Those receiving CoQ10 experienced significantly fewer cases of chest pain, heart rhythm problems, and poor heart function compared to the placebo group. Importantly, major cardiac events—including heart deaths and repeat heart attacks—dropped to 15% with CoQ10 versus 31% with placebo.
We observed that CoQ10 treatment enhanced the body's natural antioxidant defenses and reduced markers of cellular damage. These results suggest CoQ10 may offer rapid protection when given shortly after a heart attack, though larger studies with longer follow-up are needed to fully confirm these encouraging findings.
We observed that CoQ10 treatment enhanced the body's natural antioxidant defenses and reduced markers of cellular damage. These results suggest CoQ10 may offer rapid protection when given shortly after a heart attack, though larger studies with longer follow-up are needed to fully confirm these encouraging findings.
Read More
8
CoQ10 supplementation improved angina symptoms safely
We evaluated how coenzyme Q10 helps patients with heart disease. Patients with stable angina (chest pain from reduced heart blood flow) received 60 mg of coenzyme Q10 daily for 8 weeks alongside their regular medications. The results were encouraging—those who added coenzyme Q10 to their treatment experienced significant improvement in their symptoms without experiencing serious side effects.
Read More
7
CoQ10 improves exercise tolerance in angina
We evaluated CoQ10's effects on 12 angina patients using a rigorous double-blind, placebo-controlled crossover study with treadmill testing. Participants received 150 mg daily for 4 weeks.
CoQ10 significantly improved exercise capacity: patients exercised 61 seconds longer and reached ST-segment depression (a key heart stress indicator) 88 seconds later compared to placebo. The improvements correlated directly with blood CoQ10 levels.
While anginal attacks and nitroglycerin use trended downward, these reductions weren't statistically significant. The supplement was well-tolerated with minimal side effects, suggesting CoQ10 is a safe option for angina patients seeking to improve physical endurance.
CoQ10 significantly improved exercise capacity: patients exercised 61 seconds longer and reached ST-segment depression (a key heart stress indicator) 88 seconds later compared to placebo. The improvements correlated directly with blood CoQ10 levels.
While anginal attacks and nitroglycerin use trended downward, these reductions weren't statistically significant. The supplement was well-tolerated with minimal side effects, suggesting CoQ10 is a safe option for angina patients seeking to improve physical endurance.
Read More
Most Useful Reviews
9.5
Improved quality of life
After taking CoQ10, my quality of life improved. While my cholesterol was slightly high, I also experienced chest tightness, which miraculously disappeared after using CoQ10. I felt the effects immediately and plan to improve my diet in the future.
Read More
9
Decreased discomfort
Great quality product! This brand consistently delivers. I purchased this supplement for my heart health due to palpitations and chest discomfort. After taking it for a month, these symptoms have significantly decreased; I hardly experience any discomfort now. I recommend taking it with PQQ.
Read More
7.5
Less chest tightness
The benefit to the heart after eating is a reduction in chest tightness, along with good quality.
Read More
Medical Researches
SCIENTIFIC SCORE
Possibly Effective
Based on 5 Researches
7
- All Researches
9
CoQ10 reduces post-heart attack complications significantly
A randomized, double-blind placebo-controlled trial compared 120 mg daily of coenzyme Q10 to placebo over 28 days in 144 heart attack patients. Those receiving CoQ10 experienced significantly fewer cases of chest pain, heart rhythm problems, and poor heart function compared to the placebo group. Importantly, major cardiac events—including heart deaths and repeat heart attacks—dropped to 15% with CoQ10 versus 31% with placebo.
We observed that CoQ10 treatment enhanced the body's natural antioxidant defenses and reduced markers of cellular damage. These results suggest CoQ10 may offer rapid protection when given shortly after a heart attack, though larger studies with longer follow-up are needed to fully confirm these encouraging findings.
We observed that CoQ10 treatment enhanced the body's natural antioxidant defenses and reduced markers of cellular damage. These results suggest CoQ10 may offer rapid protection when given shortly after a heart attack, though larger studies with longer follow-up are needed to fully confirm these encouraging findings.
Read More
8
CoQ10 supplementation improved angina symptoms safely
We evaluated how coenzyme Q10 helps patients with heart disease. Patients with stable angina (chest pain from reduced heart blood flow) received 60 mg of coenzyme Q10 daily for 8 weeks alongside their regular medications. The results were encouraging—those who added coenzyme Q10 to their treatment experienced significant improvement in their symptoms without experiencing serious side effects.
Read More
7
CoQ10 reduces oxidative stress in effort angina
We examined how the body's stress response affects patients experiencing effort-induced chest pain (angina). Patients showed increased harmful oxygen molecules from immune cells, higher levels of oxidative damage markers, and reduced natural antioxidant defenses—worsening with disease severity.
When coenzyme Q10 was added to standard chest pain medications, it reduced the harmful oxygen production, decreased oxidative damage to fats in the blood, and restored the body's protective antioxidant capacity. This biochemical improvement translated into real clinical benefits, with patients experiencing meaningful relief from effort-induced chest pain.
When coenzyme Q10 was added to standard chest pain medications, it reduced the harmful oxygen production, decreased oxidative damage to fats in the blood, and restored the body's protective antioxidant capacity. This biochemical improvement translated into real clinical benefits, with patients experiencing meaningful relief from effort-induced chest pain.
Read More
7
CoQ10 improves exercise tolerance in angina
We evaluated CoQ10's effects on 12 angina patients using a rigorous double-blind, placebo-controlled crossover study with treadmill testing. Participants received 150 mg daily for 4 weeks.
CoQ10 significantly improved exercise capacity: patients exercised 61 seconds longer and reached ST-segment depression (a key heart stress indicator) 88 seconds later compared to placebo. The improvements correlated directly with blood CoQ10 levels.
While anginal attacks and nitroglycerin use trended downward, these reductions weren't statistically significant. The supplement was well-tolerated with minimal side effects, suggesting CoQ10 is a safe option for angina patients seeking to improve physical endurance.
CoQ10 significantly improved exercise capacity: patients exercised 61 seconds longer and reached ST-segment depression (a key heart stress indicator) 88 seconds later compared to placebo. The improvements correlated directly with blood CoQ10 levels.
While anginal attacks and nitroglycerin use trended downward, these reductions weren't statistically significant. The supplement was well-tolerated with minimal side effects, suggesting CoQ10 is a safe option for angina patients seeking to improve physical endurance.
Read More
4
CoQ10 shows adjuvant heart failure promise; limited angina evidence
Researchers reviewed clinical evidence on coenzyme Q10 (CoQ10) for treating heart conditions. The literature showed that oral CoQ10 was safe and well-tolerated, with promising effects on heart function markers like ejection fraction and exercise capacity in chronic heart failure patients.
However, the evidence for angina and hypertension remains limited. While CoQ10 showed potential as an add-on therapy for heart failure, the review concluded it shouldn't replace standard treatments. More research is needed to establish optimal dosing, drug interactions, and whether CoQ10 truly works as a standalone therapy.
However, the evidence for angina and hypertension remains limited. While CoQ10 showed potential as an add-on therapy for heart failure, the review concluded it shouldn't replace standard treatments. More research is needed to establish optimal dosing, drug interactions, and whether CoQ10 truly works as a standalone therapy.
Read More
User Reviews
USERS' SCORE
Good
Based on 3 Reviews
8.5
- All Reviews
- Positive Reviews
- Negative Reviews
9.5
Improved quality of life
After taking CoQ10, my quality of life improved. While my cholesterol was slightly high, I also experienced chest tightness, which miraculously disappeared after using CoQ10. I felt the effects immediately and plan to improve my diet in the future.
Read More
9
Decreased discomfort
Great quality product! This brand consistently delivers. I purchased this supplement for my heart health due to palpitations and chest discomfort. After taking it for a month, these symptoms have significantly decreased; I hardly experience any discomfort now. I recommend taking it with PQQ.
Read More
7.5
Less chest tightness
The benefit to the heart after eating is a reduction in chest tightness, along with good quality.
Read More
Frequently Asked Questions
9
Decreased discomfort
Great quality product! This brand consistently delivers. I purchased this supplement for my heart health due to palpitations and chest discomfort. After taking it for a month, these symptoms have significantly decreased; I hardly experience any discomfort now. I recommend taking it with PQQ.
9.5
Improved quality of life
After taking CoQ10, my quality of life improved. While my cholesterol was slightly high, I also experienced chest tightness, which miraculously disappeared after using CoQ10. I felt the effects immediately and plan to improve my diet in the future.
7.5
Less chest tightness
The benefit to the heart after eating is a reduction in chest tightness, along with good quality.
8
CoQ10 supplementation improved angina symptoms safely
We evaluated how coenzyme Q10 helps patients with heart disease. Patients with stable angina (chest pain from reduced heart blood flow) received 60 mg of coenzyme Q10 daily for 8 weeks alongside their regular medications. The results were encouraging—those who added coenzyme Q10 to their treatment experienced significant improvement in their symptoms without experiencing serious side effects.
References
- Kuimov AD, Murzina TA. [Coenzyme q10 in complex therapy of patients with ischemic heart disease]. Kardiologiia. 2013;53:40. PubMed
- Tran MT, Mitchell TM, Kennedy DT, Giles JT. Role of coenzyme Q10 in chronic heart failure, angina, and hypertension. Pharmacotherapy. 2001;21:797. PubMed
- Kogan AKh, Syrkin AL, Drinitsina SV, Kokanova IV. [The antioxidant protection of the heart by coenzyme Q10 in stable stenocardia of effort]. Patol Fiziol Eksp Ter. 1999. PubMed
- Singh RB, Wander GS, Rastogi A, Shukla PK, Mittal A, et al. Randomized, double-blind placebo-controlled trial of coenzyme Q10 in patients with acute myocardial infarction. Cardiovasc Drugs Ther. 1998;12:347. PubMed
- Kamikawa T, Kobayashi A, Yamashita T, Hayashi H, Yamazaki N. Effects of coenzyme Q10 on exercise tolerance in chronic stable angina pectoris. Am J Cardiol. 1985;56:247. PubMed
