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How It Works?

CCL Caffeine | Caffeine & Guarana Inhaler

Propellant used in these inhalers is a bonchodilator - increasing Oxygen flow into the blood stream - another great reason to use it as a pre workout.

1,1,1,2-tetrafluoroethane and HFA227ea are propellants of pressurised metered dose inhalers (pMDI) used by asthmatics.

This chemical[specify] is an inhalational anaesthetic studied only in animals in 1967,[27] and toxicology investigations did not acknowledge this fact. All hydrofluorocarbon inhaled anaesthetic agents have smooth muscle relaxing properties, so the propellant gas produced by pMDIs using HFA134a and HFA227ea (which has no anaesthetic activity) will add to beta2-agonist bronchodilating drugs from that inhaler.

The change from inert chlorofluorocarbon / Freon propellant to HFAs occurred in the late 1990s, and coincided with the fact that "Asthmatic athletes have consistently outperformed healthy athletes in every Olympic games since 2000".[28]

Mckenzie DC, Fitch KD (2011). "The asthmatic athlete:inhaled beta-2 agonists, sport performance, and doping". Clin J Sport Med21: 46–50. PMID 21200170.