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Ingredient & advertising guide

This page has two jobs. First, it explains everything printed on the 8 fl oz amber glass bottle of tangerine-flavored liquid CoQ10 we sell: what each ingredient is, and what the research does and does not say about it, including who was in each study, at what amount, and what each study actually measured. Second, and this is the part most advertising pages leave out, it lists the headlines we run about the heart and circulation, tells you which ones are exaggerated, and separates the small number of things that are genuinely supported by evidence from the many that are not.

1. Our headlines, and what is actually true

These are the headlines we have run, grouped by the claim they make. The right-hand column is our own plain assessment. We have marked each one as Exaggerated, Partly true, Withdrawn, Our headline was wrong or Broadly supported.

The headline as you saw it	What is actually behind it
"CoQ10 After 60: What Your Body Makes Less Of"	Partly true Coenzyme Q10 is real, and your body makes its own: inside the mitochondria it takes part in turning the energy in carbohydrates and fats into ATP, the fuel cells run on. [1] [2] Its concentration in a number of tissues does fall gradually with age, but it is unclear whether that fall amounts to a shortage, and a shortage has not been described in the general population. [1] What the headline skips is the jump from "the body makes less" to "two teaspoons top it up". A normal diet supplies about 3 to 6 mg a day, [3] the liquid we sell holds 100 mg per two teaspoons, and less than 5% of a dose taken by mouth is thought to reach the circulation. [4] In a trial that included eight trained men aged 60 to 74, 120 mg a day for six weeks raised blood CoQ10 without improving aerobic capacity, [5] and a federal summary calls the research on CoQ10 for the heart itself inconclusive. [6] "After 60" is our framing: no birthday switches it off.
"The Red Tea Men Over 60 Are Drinking Every Morning"	Partly true The red tea is hibiscus: the dried red calyces of a tropical flower, brewed tart and deep red, with no caffeine of its own. It is a real drink with a long place in many kitchens, and it has small studies of its own, but we do not review them here. The liquid we sell contains no hibiscus. What we made up is the crowd. We have no count of men over 60 drinking it every morning, and "every morning" was chosen because it sounds like a habit you are missing.
"Beet Powder: Why Men Over 60 Are Stirring a Spoonful Into Water"	Partly true Beet root is sold for its dietary nitrate. About 80% of the nitrate we eat comes from vegetables, and the body turns part of it into nitrite, and from there into nitric oxide, a molecule involved in how blood vessels widen. [7] That part is real. The studies behind the story used juice and whole foods, not a spoonful. Half a liter of beetroot juice a day for six days made walking cost about a fifth less oxygen in nine fit young men, [8] and a single day of nitrate-rich food with juice changed blood flow in one region of the brain in older adults averaging about 75. [9] A spoonful of powder reaches those amounts only if the label prints its nitrate and the figure matches. The liquid we sell contains no beet and no nitrate. "Men over 60 are stirring" is our phrase, not a survey.
"The Old Hedge Berry Europeans Have Brewed for Centuries Is Back"	Exaggerated The hedge berry is hawthorn, and the "centuries" part is fair: its berries, leaves and flowers have a long place in European herbal tradition. "Is back" suggests a new finding, and there is none behind that word; it was written to sound like news. The liquid we sell contains no hawthorn, so we do not review its studies here. Tradition is the reason a plant gets studied, not a result.
"Olive Leaf: The Mediterranean Leaf Behind a New Morning Habit"	Exaggerated The Mediterranean eating pattern is food on a plate: three to nine servings of vegetables a day, fruit, cereals, fish, and olive oil for much of its fat. [10] An extract of the olive tree's leaf is not that pattern, it is not olive oil, and it is not a meal. Olive leaf has its own research, which we do not review here because the liquid we sell contains none, but borrowing the reputation of a whole way of eating for a leaf extract was our shortcut, not the evidence. See section 3.
"The 20-Minute Walk That Beats 10,000 Steps"	Partly true The useful half: 10,000 steps a day is popular advice, not a guideline, and the federal activity guidelines use a 20-minute walk as their own worked example of setting a daily goal. [11] The overstated half is "beats". The guidelines set a weekly range of 150 to 300 minutes of moderate activity such as brisk walking, plus muscle-strengthening on two or more days, [12] and bouts of any length count toward it. [11] A 20-minute walk every day adds up to 140 minutes a week, just under the bottom of that range: a fine start, not a finish line. See section 5.
"Your Pulse Says More Than You Think. Take the 10-Second Wrist Test"	Our headline was wrong There is no 10-second wrist test. Counting your pulse is a real skill: two fingers below the base of the thumb, counting for a full minute or for 30 seconds and doubling, and for adults a resting rate of 60 to 100 beats a minute is considered normal. [13] A count tells you a count, and counting for ten seconds and multiplying by six only makes a one-beat slip six times bigger. See section 4.
"Can You Climb 4 Flights of Stairs in a Minute? What It Means After 60"	Exaggerated Stairs are good activity, and the activity guidelines say even climbing a few flights counts toward your week. [11] A stopwatch on a staircase, read against a number in an advertisement, means nothing: fitness, knees, the height of the steps and last night all change the time. The guidelines ask older adults to judge their effort against their own fitness, not against a stranger's number. [14] If stairs feel different from how they felt a few months ago, mention it at your next visit.
"The Salt Swap Men Over 60 Are Making at Breakfast"	Broadly supported The broad idea holds. Americans eat on average about 3,400 mg of sodium a day against a limit of less than 2,300 mg, about one teaspoon of table salt, [15] and that limit applies to everyone 14 and older, not only after 60. [16] What we got wrong is the shaker. Over 70% of sodium comes from packaged and prepared foods, so the swap that matters is at the label, where 5% of the Daily Value or less per serving is low and 20% or more is high. [15] The liquid we sell: The panel prints no sodium line.

2. Every drink our ads point at

Our headlines have pointed at "the morning drink", "the red tea" and a spoonful of beet, often without naming them. Here is each drink we were pointing at, and what the sources actually support. Where a study is cited, we say who was in it and what it measured; a short-term measurement in a small group is not a health outcome.

3. Every food our ads point at

The food headlines referred to a salt swap, a Mediterranean leaf and "nitric oxide", and some versions promised a short list of foods to drop. Lists of that kind were ours, not a finding. Here is what was meant, and what stands behind it, including where the CoQ10 on your plate comes from.

4. The "home tests" in our ads

Several of our headlines invite you to test yourself at home: count your pulse for ten seconds, time yourself on four flights of stairs, take "the 10-second test". None of them is a validated test, and we cannot give you a real one, because a real check does not work that way.

What a home count can honestly tell you. Three things, and only these:

• Your resting pulse, counted for a full minute or for 30 seconds and doubled; for adults, 60 to 100 beats a minute at rest is considered normal. ^[13]
• How hard a walk is: moderate if you can talk but not sing, vigorous if you can say only a few words without pausing for a breath. ^[31]
• Your walking pace: in healthy adults aged 61 to 85, about 100 steps a minute marked the start of moderate intensity. ^[32]

5. Everyday habits worth more than any liquid

If we only had one section to be useful in, this would be it. None of these is a supplement or a list of three foods, and none of them can be sold to you by us.

• Count minutes before steps: 150 to 300 minutes a week of moderate activity such as brisk walking, spread through the week. ^[12]
• Any bout counts, even a few flights of stairs; 10,000 steps is popular advice, not a guideline. ^[11]
• Add muscle-strengthening on two or more days a week, ^[12] and, after 60, balance work, at an effort set by your own fitness. ^[14]
• Walk fast enough that you can talk but not sing. ^[31]
• Take any daily supplement exactly as its label says, with the meal if it asks for one.
• If you smoke, stopping helps at any age, however long you have smoked. ^[34]
• Drink less alcohol and fewer sugary drinks. ^[23]
• Choose water and unsweetened drinks through the day; plain coffee and tea count among them. ^[23]
• Read the sodium line and keep the day under 2,300 mg. ^{[15] [16]}
• Eat vegetables and fruit whole, 3 and 2 servings a day. ^[25]
• Once a year, take everything you take to the pharmacist.
• Keep your yearly visit: half of the American Heart Association's scoring is measured there. ^[33]

These are unglamorous. They cannot be delivered in a headline, they take years, and they are, by a wide margin, the most useful things on this entire page.

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6. Ingredient guide: what is actually in the liquid we sell

What each ingredient printed on the label of Nature's Answer Liquid CO-Q10 100 mg, Tangerine is, what it is traditionally used for, and what the cited research says, including who was in each study, at what amount, for how long, and what each study actually measured. One serving is two teaspoons (10 mL) stirred into 8 to 10 ounces of water once a day, preferably with a meal. The panel, line by line: per two teaspoons (10 mL), calories 5; total fat 1 g (1% of the Daily Value); non-GMO sunflower lecithin blend 495 mg (phosphatidylcholine, phosphatidylinositol, phosphatidylethanolamine, and phosphatidic acid 100 mg); coenzyme Q10 as ubiquinone 100 mg. Other ingredients: purified water, natural flavors, polyglycerol esters of fatty acid, citric acid, xanthan gum, potassium sorbate (as preservative), monk fruit extract, and Quik-Sorb® (ginger rhizome, amla fruit, capsicum fruit). Three plain notes on the panel. First, only the CoQ10 (100 mg) and the sunflower lecithin blend (495 mg, of which only the phosphatidic acid, 100 mg, is quantified) carry amounts; the ginger, amla and capsicum of the Quik-Sorb blend share one line with no amount at all. Second, the listing says Quik-Sorb is there "to support absorption", but it cites no study of the blend and we found none, and the listing's headline calls the bottle a premium "Herbal Extract", which is inaccurate: CoQ10 is not an herb. Third, the bottle holds 24 servings, so it lasts 24 days at the label's amount, a little short of a month. No study has tested these ingredients together, or tested this liquid at all.

Coenzyme Q10 (CoQ10), as ubiquinone

A fat-soluble compound that the body makes in almost every cell and also takes in from food, which is why it is not counted as a vitamin.^[1] Inside the mitochondria it helps turn the energy in carbohydrates and fats into ATP, the fuel the cell's machinery runs on.^[2] Supplements sell it either as ubiquinone, the form in all four products of this group, or as ubiquinol, its reduced form; once absorbed, most of it circulates as ubiquinol either way.^{[35] [36]}

Traditional and everyday use. Sold as a dietary supplement in the United States.^[37] A typical diet supplies about 3 to 6 mg a day, mostly from meat, poultry and fish, with some from cooking oils, nuts and seeds; supplements usually provide 30 to 100 mg.^{[3] [30]}

What the research says. The heart is among the tissues with the most CoQ10,^[38] and tissue levels fall gradually with age, though it is unclear whether that amounts to a shortage.^[1] Because it dissolves in fat and not in water, it is absorbed slowly and poorly: it is best taken with a meal that contains fat,^[4] and blood levels peak about six hours after a dose.^[39] In single-dose studies, a water-dispersible syrup raised blood levels more than standard capsules in healthy adults aged 65 to 74,^[36] and a liposomal form did the same in adults aged 18 to 45.^[40] Raising blood levels is not the same as feeling a difference: in trials in middle-aged and older men, 120 to 150 mg a day raised blood CoQ10 but did not improve aerobic capacity,^{[41] [5]} and a review of the athletic trials found little evidence of any performance effect.^[42] In one small trial, men in their mid-forties rated their own vigor higher after two months.^[41]

Amount per serving in Liquid CO-Q10 100 mg · Alcohol-Free · Tangerine · 8 fl oz (240 mL). 100 mg (per two teaspoons, taken in a glass of water, preferably with a meal)

Good to know. Side effects are usually mild: an upset stomach, nausea, heartburn or trouble sleeping, mostly at 200 mg a day or more; splitting larger amounts can ease them.^{[37] [43]} CoQ10 can change how at least one widely taken daily product works: if you take anything daily, show this label to your pharmacist first.^[43] Reliable data during breastfeeding are lacking; if you are pregnant or nursing, ask before use.

Sunflower lecithin (phospholipid blend)

Lecithin is a mixture of phosphatides, the membrane fats built on choline, ethanolamine and inositol, with smaller amounts of other fats; this one is taken from sunflower seed oil. In food it is an emulsifier, the ingredient that keeps oil and water mixed, and here it keeps the oily CoQ10 spread through a water-based liquid.

Traditional and everyday use. US food rules list lecithin as an ingredient that may be used in food with no limit other than good manufacturing practice.

What the research says. A carrier and emulsifier, not an active ingredient; no claim.

Amount per serving in Liquid CO-Q10 100 mg · Alcohol-Free · Tangerine · 8 fl oz (240 mL). 495 mg (only the phosphatidic acid is quantified (100 mg))

Good to know. A food ingredient, well tolerated. Made from sunflower, not soy; avoid if you are allergic to sunflower seeds.

Polyglycerol esters of fatty acids (emulsifier)

An emulsifier made by joining fatty acids from common vegetable oils or animal fats to short chains of glycerol. US food rules allow it in food as an emulsifier, in no more than the amount needed to do that job; in these liquids it helps keep the oily CoQ10 evenly mixed in water.

Traditional and everyday use. A food emulsifier, also used to keep salad oils from clouding.

What the research says. A processing aid; no claim.

Good to know. A permitted food emulsifier, used in small amounts.

Monk fruit (Siraitia grosvenorii, luo han guo), juice concentrate or extract

The fruit of a plant native to southern China. Its extract owes its sweetness to compounds called mogrosides and, depending on how much of them it holds, is reported to be 100 to 250 times sweeter than sugar, so a trace sweetens a whole bottle without adding calories.

Traditional and everyday use. The FDA has not questioned the conclusions, submitted in several notices, that its extracts are generally recognized as fit for use as general-purpose and tabletop sweeteners.

What the research says. A sweetener; no claim.

Good to know. Used in trace amounts to sweeten; nothing specific at these amounts.

Ginger (Zingiber officinale), root

The knobbly underground stem of a tropical plant native to the warm parts of Asia, now grown across South America, Africa and the Middle East, and one of the most familiar spices in the world. In supplements it appears as dried pieces of root or as a liquid extract of the root.

Traditional and everyday use. Used in home kitchens and folk practice since ancient times, mostly for the stomach, and the warming spice in Indian chai.

What the research says. The research on ginger concerns the stomach and joint comfort, not memory, attention, the heart or circulation. We make no claim for it here.

Good to know. Can cause abdominal discomfort, heartburn, diarrhea and mouth or throat irritation. If you take anything daily, especially anything that affects clotting, show the label to your pharmacist first.

Indian gooseberry (Phyllanthus emblica, also written Emblica officinalis; amla), fruit

A small tree of the Indian subcontinent whose round, pale-green, very sour fruit is one of the richest food sources of vitamin C. The fruit is eaten pickled, candied and in chutneys, and dried pieces of it go into herbal blends.

Traditional and everyday use. A staple of Ayurvedic tonic preparations known as rasayana, such as chyawanprash and the three-fruit blend Triphala, and used in the Indian kitchen for centuries.

What the research says. We cite no trial of amla for this entry and make no claim for it here.

Good to know. Sour and astringent; large amounts may upset the stomach. Some reports suggest it can affect glucose. If you take anything daily, show the label to your pharmacist before making it a daily habit.

Capsicum (Capsicum annuum, chili pepper), fruit

The fruit of the pepper plant that also gives cayenne, chili powder and paprika. Its heat comes from compounds called capsaicinoids, mainly capsaicin and dihydrocapsaicin, which make up about 79 to 90 % of them in cayenne fruit.

Traditional and everyday use. A kitchen spice.

What the research says. Part of Nature's Answer's Quik-Sorb® blend with ginger and amla, sold "to support absorption"; the label gives no amount and we found no published study of the blend. No claim.

Good to know. Hot peppers can irritate the mouth and stomach in sensitive people; the amount here is not stated.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This information does not constitute medical advice and it should not be relied upon as such. This product is not a substitute for medication or other treatment prescribed by a physician or health care provider. Consult your doctor before starting any dietary supplement.

7. What we can and cannot promise

Set against the headlines that brought you here, this is the complete and honest position.

Things we cannot promise, and that nobody selling you a liquid can:

• That this liquid will change any reading your clinician takes, or stand in for anything your clinician gave you.
• That it does what a walk, a plate of vegetables or a full night does.
• That it offsets salt, alcohol, sugar, smoking, or any drink or food named on this page.
• That a pulse count, a stair timer or a 10-second test can tell you anything about your heart.
• That the studies in section 6 were done on this liquid. They tested single ingredients, in other people, at their own amounts.
• That 100 mg a day changes stamina: in trained men, including eight aged 60 to 74, 120 mg a day for six weeks raised blood CoQ10 but not aerobic capacity, ^[5] and most athletic trials of 100 to 150 mg found no difference. ^[42]
• That this liquid is absorbed like the water-soluble syrup that beat standard capsules in adults aged 65 to 74: that was a different product, a single dose, in a study partly funded by its maker. ^[36]
• That the Quik-Sorb blend does anything measurable. The label gives no amounts and we found no published study of it.
• That any expert or any heart specialist recommends it. None has.

Things we can say honestly:

• It is a 8 fl oz amber glass bottle of tangerine-flavored liquid CoQ10 made by Nature's Answer, Inc. of Hauppauge, New York and sold by Nature's Answer, Inc., Hauppauge, New York, which publishes this contact information: 75 Commerce Dr, Hauppauge, NY 11788 (returns and legal notices go to 85 Commerce Drive, Hauppauge, NY 11788); 1-800-439-2324, Monday to Friday, 8:30 to 17:30 Eastern; customerservice@naturesanswer.com.
• The label's direction is two teaspoons (10 mL) stirred into 8 to 10 ounces of water once a day, preferably with a meal.
• The list price when we read the listing: $24.99 for one 8 fl oz (240 mL) bottle of 24 servings when we read the listing on September 26, 2026, about $1.04 a serving; taxes and shipping are extra, and the listing mentions shipping at no charge only for subscription orders. The price and any promotion are set by the seller and change, so check it before you order.
• The seller's refund terms: Under the maker's satisfaction promise you may return the unused portion within 45 days of purchase, bought on its website or from its authorized US sellers, and it will refund your money, send a replacement or credit the unused portion. You need proof of purchase and a return number from customer service, the buyer pays return shipping, and the promise covers end buyers in the United States only.
• Ratings on the seller's page: None. When we read the maker's page on September 26, 2026, its review section showed no reviews for this bottle, so there are no ratings to report and no customer quotes anywhere on our pages. Individual experiences are not evidence.
• We earn a commission if you buy. That is our interest in this, stated plainly.
• Nothing here is medical advice, and none of it replaces your own clinician.

8. Questions people ask us

Is plain coffee a problem for the heart?

The FDA cites 400 mg of caffeine a day as an amount not generally associated with negative effects in most healthy adults. ^[17] Too much can bring a faster heartbeat and jitters, so keep it earlier in the day.

Does milk in my tea matter?

One small study of 16 women found that milk erased tea's short-term effect on how easily the arm artery widens. ^[22] One study is not a rule, so drink it the way you enjoy it.

How many steps do I need?

There is no official step number, and 10,000 is popular advice. Set minutes first: 150 to 300 a week of brisk walking or similar. ^{[11] [12]}

How fast is a brisk walk?

Fast enough that you can talk but not sing. ^[31] In healthy adults aged 61 to 85, that began at about 100 steps a minute. ^[32]

Can I check my pulse at home?

Yes: count for a full minute, or for 30 seconds and double it, and 60 to 100 at rest is considered normal for adults. ^[13] A count is a count, not a check-up.

Is the "red tea" in your ads hibiscus?

Yes. It is a tart, caffeine-free flower tea, and section 2 has the honest version.

How much CoQ10 do I already eat?

About 3 to 6 mg a day on a normal diet, against 100 mg in two teaspoons of the liquid we sell. ^[3]

Why does the label say to take it with a meal?

CoQ10 dissolves in fat, not in water, and it is best absorbed with the fat in a meal. ^[4]

Does the liquid contain caffeine, sugar or salt?

The panel prints no caffeine figure, and none of its ingredients is a source of caffeine. The panel lists no added sugar; the liquid is sweetened with monk fruit extract, at 5 calories per serving. The panel prints no sodium line.

Is anything in it a problem with what I take daily?

Possibly, so take the liquid to your pharmacist before the first serving. CoQ10 can blunt the effect of at least one widely used product that people take every day, so the pharmacist should see this label first. The Quik-Sorb blend adds ginger and capsicum in amounts the label does not give, and the lecithin comes from sunflower.

What does the refund cover?

Under the maker's satisfaction promise you may return the unused portion within 45 days of purchase, bought on its website or from its authorized US sellers, and it will refund your money, send a replacement or credit the unused portion. You need proof of purchase and a return number from customer service, the buyer pays return shipping, and the promise covers end buyers in the United States only.

If your own headlines are exaggerated, why should I believe this page?

Do not take our word for it: every numbered reference below is a real, published source you can look up. Where a headline and this page disagree, believe this page.

Does this page cost anything?

No. Read it, close the tab and never come back, if you like.

References

These are the sources behind the claims marked with a number above. Most are government guidance or small, short studies. The tea meta-analysis was written by employees of a tea company; the beet juice study was in nine fit young men; the tea studies measured a short-term widening of the arm artery, not a health outcome; several CoQ10 reviews were written by employees of companies that make CoQ10; the fact sheets are the governments' own. None of them tested this liquid. We have deliberately not cited anything for the claims we describe as exaggerated, because there is nothing to cite.

1. Linus Pauling Institute, Oregon State University. "Coenzyme Q10", Micronutrient Information Center (written 2003; updated April 2018; reviewed May 2018) lpi.oregonstate.edu
2. Crane F.L. (2001). Journal of the American College of Nutrition 20(6):591-598 doi.org
3. Linus Pauling Institute, Oregon State University. "Coenzyme Q10" (Food sources, Table 1; Supplements) lpi.oregonstate.edu
4. Linus Pauling Institute, Oregon State University. "Coenzyme Q10" (Supplements; Food sources) lpi.oregonstate.edu
5. Laaksonen R., Fogelholm M., Himberg J.J., Laakso J., Salorinne Y. (1995). European Journal of Applied Physiology and Occupational Physiology 72(1-2):95-100 doi.org
6. NCCIH (National Institutes of Health). "Coenzyme Q10". Last updated January 2019 nccih.nih.gov
7. Hord N.G., Tang Y., Bryan N.S. (2009). American Journal of Clinical Nutrition 90(1):1-10 doi.org
8. Lansley K.E. et al. (2011). Journal of Applied Physiology 110(3):591-600 doi.org
9. Presley T.D. et al. (2011). Nitric Oxide 24(1):34-42 doi.org
10. Davis C., Bryan J., Hodgson J., Murphy K. (2015). Nutrients 7(11):9139-9153 doi.org
11. US Department of Health and Human Services (2018). Physical Activity Guidelines for Americans, 2nd edition odphp.health.gov
12. US Department of Health and Human Services (2018). Physical Activity Guidelines for Americans, 2nd edition odphp.health.gov
13. MedlinePlus Medical Encyclopedia. "Pulse" (reviewed 2025-01-01) medlineplus.gov
14. US Department of Health and Human Services (2018). Physical Activity Guidelines for Americans, 2nd edition odphp.health.gov
15. US FDA. "Sodium in Your Diet" (updated 2024-03-05) fda.gov
16. US Department of Agriculture and US Department of Health and Human Services (2026). Dietary Guidelines for Americans, 2025–2030 cdn.realfood.gov
17. US FDA Consumer Update. "Spilling the Beans: How Much Caffeine Is Too Much?" (updated 2024-08-28) fda.gov
18. EFSA Panel on Dietetic Products, Nutrition and Allergies (2015). Scientific Opinion on the safety of caffeine. EFSA Journal 13(5):4102 doi.org
19. NIH NCCIH. "Green Tea" (updated February 2025) nccih.nih.gov
20. Jochmann N. et al. (2008). British Journal of Nutrition 99(4):863-868 doi.org
21. Ras R.T., Zock P.L., Draijer R. (2011). PLoS One 6(3):e16974 doi.org
22. Lorenz M. et al. (2007). European Heart Journal 28(2):219-223 doi.org
23. US Department of Agriculture and US Department of Health and Human Services (2026). Dietary Guidelines for Americans, 2025–2030 cdn.realfood.gov
24. NCCIH. "Energy Drinks" (updated July 2018) nccih.nih.gov
25. US Department of Agriculture and US Department of Health and Human Services (2026). Dietary Guidelines for Americans, 2025–2030 cdn.realfood.gov
26. Weber C., Bysted A., Hølmer G. (1997). International Journal for Vitamin and Nutrition Research 67(2):123-129 pubmed.ncbi.nlm.nih.gov
27. MedlinePlus Medical Encyclopedia. "Potassium in diet" (reviewed 2026-04-30) medlineplus.gov
28. NIH Office of Dietary Supplements. "Omega-3 Fatty Acids: Fact Sheet for Health Professionals" ods.od.nih.gov
29. NIH Office of Dietary Supplements. "Omega-3 Fatty Acids: Fact Sheet for Consumers" (updated July 18, 2022) ods.od.nih.gov
30. Pravst I., Zmitek K., Zmitek J. (2010). Critical Reviews in Food Science and Nutrition 50(4):269-280 doi.org
31. US CDC. "How to Measure Physical Activity Intensity" (2025-12-04) cdc.gov
32. Tudor-Locke C. et al. (2021). International Journal of Behavioral Nutrition and Physical Activity 18:129 doi.org
33. Lloyd-Jones D.M. et al. (2022). Circulation 146(5):e18-e43 doi.org
34. US CDC. "Benefits of Quitting Smoking" (2024-05-15) cdc.gov
35. Bhagavan H.N., Chopra R.K. (2007). Mitochondrion 7 Suppl:S78-S88 doi.org
36. Pravst I., Rodríguez Aguilera J.C., Cortes Rodriguez A.B., et al. (2020). Nutrients 12(3):784 doi.org
37. NCCIH (National Institutes of Health). "Coenzyme Q10". Last updated January 2019 nccih.nih.gov
38. Aberg F., Appelkvist E.L., Dallner G., Ernster L. (1992). Archives of Biochemistry and Biophysics 295(2):230-234 doi.org
39. Mantle D., Dybring A. (2020). Antioxidants 9(5):386 doi.org
40. Jäger R., Purpura M., Godavarthi A., et al. (2025). Frontiers in Nutrition 12:1605033 doi.org
41. Porter D.A., Costill D.L., Zachwieja J.J., et al. (1995). International Journal of Sports Medicine 16(7):421-427 doi.org
42. Linus Pauling Institute, Oregon State University. "Coenzyme Q10" (Athletic performance) lpi.oregonstate.edu
43. Linus Pauling Institute, Oregon State University. "Coenzyme Q10" (Safety) lpi.oregonstate.edu

Citing a study does not mean the study is about this product. The studies above tested one food, drink or ingredient at a time, in other people, at their own amounts; none of the research tested Nature's Answer Liquid CO-Q10 100 mg, Tangerine, and none of it supports it.

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