Expert Opinions on Caffeine

In spite of all the concern and scrutiny caffeine consumption has faced since its introduction to Western life over 300 years ago, no significant health consequences of dietary caffeine consumption have been found. Intensive research has shown that no significant health hazard from ordinary caffeine consumption has been established.

National Health and Medical Research Council (Australia)

Regarding the effects of caffeine, the available evidence on caffeine consumption suggests that with average intakes the pharmacological effects are minor. These effects largely disappear with long-term high intakes, with the development of tolerance. Evidence for long-term detrimental effects or life-threatening toxic effects is generally lacking.

Caffeine, Cola Drinks and Children.
NHMRC

The Australian Journal of Pharmacy

The evidence available appears to indicate that the consumption of up to 450mg of caffeine daily does not present a significant health problem to normal persons. Its effects such as increased alertness, anxiety, respiratory stimulation and irritability may be viewed by some as desirable to some extent and undesirable by others. Regular ingestion of moderate amounts of caffeine i.e. up to 450mg daily appear(s) to be harmless for the majority of people. Pregnant and breast feeding women would be advised to restrict their intake of caffeine.

Disposition of Caffeine
Australian Journal of Pharmacy December 1988: 891-892

British Medical Journal

Thus, caffeine, except perhaps at very high levels of intake, appears blameless as a risk to bodily health.

Caffeine and Health: Editorial B.M.J.
British Medical Journal 21st November 1987: 1293

Dr P.B. Dews, Harvard Medical School

Caffeine as consumed now and in the foreseeable future appears to be a vanishingly small health hazard. Despite generations of scrutiny, persistent sequelae of dietary consumption of caffeine at any level have not been detected. Under certain circumstances, unease, restlessness and insomnia may be produced by excess intake; but the manifestations disappear within at most a few hours of cessation of intake.

Caffeine Research: an International Overview
A paper presented by Dr Dews at the ILSI Australian meeting entitled
Caffeine: A Scientific Review,1986.

The Institute of Food Technologists (USA)

Caffeine has had a long history of safe use by humans....there is a solid body of evidence supporting the view that moderate amounts are not harmful to the average healthy adult.

Scientific Status Summary: Evaluation of Caffeine Safety
Food Technology, June 1987: 105-113

The Food and Drug Administration (USA)

An over-the-counter stimulant drug product in a form suitable for oral administration is generally recognised as safe and effective... if the active ingredient of the product consists of caffeine when used with the dosage limits (below). Oral dosage is 100 to 200 mg not more often than every 3 to 4 hours. (N.B. The dosage recommendation in Australia is 100 mg)

Code of Federal Regulations: Food and Drugs
21 Parts 300-499
Revised as of April 1, 1991

NoDoz Awakeners

Repeat doses should not be taken under 3 hours. No more than 6 tablets should be taken within 24 hours.

Warnings: For occasional use only. Not intended for use as a substitute for sleep. If fatigue or drowsiness persists or continues to recur, consult a doctor. The recommended dose of this product contains about as much caffeine as a cup of coffee. Limit the use of caffeine-containing medications, foods or beverages while taking this product because too much caffeine may cause nervousness, irritability, sleeplessness and, occasionally, rapid heart beat. Contains glucose. Do not give to children under 12 years of age. Keep out of the reach of children. As with any drug, if you are pregnant, nursing a baby, have high blood pressure or a heart condition, seek the advice of a health professional before using this product.

NoDoz Plus

Repeat doses should not be taken under 3 hours. Maximum recommended daily dosage is 5 tablets.

Warnings: For occasional use only. Not intended for use as a substitute for sleep. If fatigue or drowsiness persists or continues to recur, consult a doctor. The recommended dose of this product contains about as much caffeine as a cup of coffee. Limit the use of caffeine-containing medications, foods or beverages while taking this product because too much caffeine may cause nervousness, irritability, sleeplessness and, occasionally, rapid heart beat. Do not give to children under 12 years of age. As with any drug, if you are pregnant, nursing a baby, have high blood pressure or a heart condition, seek the advice of a health professional before using this product. Keep out of the reach of children.
Vitamin supplements should not replace a balanced diet.