Marc Lotz (born 19 October 1973 in Valkenburg) is a Dutch former racing cyclist.

[1] In July 2005 Lotz was suspended from Quick-Step–Innergetic for two years due to admitting to using erythropoietin (EPO), a performance-enhancing drug.

[2] Lotz reportedly took the substance to help him at the 2005 Tour de France, which he never ended up riding.

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