Clinical Trial to Determine the Bioavailability of Three Different Zinc Preparations

Inclusion Criteria: * Subject is able and willing to sign the Informed Consent Form prior to screening evaluations * Sex: female (premenopausal), male * Age: 20 - 50 years * BMI ≥19 or ≤30 kg/m² * Non-smoker * Subject is in good physical and mental health as established by medical history, physical examination, electrocardiogram, vital signs, results of biochemistry, hematology Exclusion Criteria: * Relevant history or presence of any medical disorder, potentially interfering with this trial * For this trial clinically relevant abnormal laboratory, ECG, vital signs or physical findings at screening * Migraine or regular headache, intense premenstrual symptoms * Coffee consumption \>3 cups / day * Blood donation within 2 months prior to trial start or during trial * Regular intake of mineral supplements within 4 weeks prior to trial start or during trial * Chronic intake of substances affecting the intestinal absorption of zinc * Vegetarians / vegans * Drug-, alcohol- and medication abuses * Known HIV-infection * Known acute or chronic hepatitis B and C infection * Relevant allergy or known hypersensitivity against compounds of the study preparations, for example lactose intolerance * Known pregnancy, breast feeding or intention to become pregnant during the study * Participation in another clinical trial within the last 4 weeks and concurrent participation in another clinical trial * Not anticipating any planned changes in lifestyle for the duration of the study