Fastin

Fastin is a brand name for a weight loss supplement that has been available over-the-counter. Its primary active ingredient has historically been phenylpropanolamine (PPA). However, PPA was voluntarily withdrawn from the U.S. market in 2000 at the request of the Food and Drug Administration (FDA) due to concerns about an increased risk of hemorrhagic stroke.

Following the withdrawal of PPA, various formulations of Fastin have been marketed, often containing different stimulant ingredients such as ephedra extract (ephedrine alkaloids) or caffeine. Ephedra was also later banned by the FDA in 2004 due to safety concerns, including links to heart attack, stroke, and death.

Current formulations of Fastin, if available, typically contain proprietary blends of herbal ingredients and stimulants. These may include ingredients like caffeine, green tea extract, and various plant-derived compounds marketed for their purported metabolism-boosting or appetite-suppressing effects.

As with any dietary supplement, the efficacy and safety of Fastin can vary depending on the specific ingredients and dosage. Consumers are advised to consult with a healthcare professional before using such products, especially if they have pre-existing health conditions or are taking other medications. The regulatory oversight of dietary supplements is different from that of prescription drugs, and claims made by manufacturers are not always evaluated by the FDA prior to marketing.