Ephedrine is a chemical substance that can be found in certain plants. It is often used in medicine to treat respiratory problems like asthma and nasal congestion. Full definition
The agency said that it had received more than 1,000 reports of adverse events linked to products with ephedrine — the the active ingredient in ephedra — including cases of heart attack, stroke, hypertension and at least 150 deaths. (HerbalFenPhenLawyers.com)
By comparison, ingestion of 50 mg of ephedrine thrice daily increases energy expenditure by approximately 320 kJ / d (13). (academic.oup.com)
Even the most powerful fat loss supplements like ephedrine and caffeine have fairly small effects. (completehumanperformance.com)