Valentiner-Branth P, Shrestha PS, Chandyo RK, Mathisen M, Basnet S, Bhandari N, Adhikari RK, Sommerfelt H, Strand TA A randomized controlled trial of the effect of zinc as adjuvant therapy in children 2-35 mo of age with severe or nonsevere pneumonia in Bhaktapur, Nepal Am J Clin Nutr. (2010 Jun) Zeng L, Zhang L Efficacy and safety of zinc supplementation for adults, children and pregnant women with HIV infection: systematic review. Trop Med Int Health. (2011-Dec) Afrin LB Fatal copper deficiency from excessive use of zinc-based denture adhesive Am J Med Sci. (2010 Aug) If you decide to take beta-carotene supplements, it's important not to take too much as this could be harmful. This supplement may not be a magic cure for acne, however, there is plenty of evidence that concluded that it is beneficial if you want to maintain a healthy and clear complexion.

Chrysohoou C, Panagiotakos D, Pitsavos C, Siasos G, Oikonomou E, Varlas J, Patialiakas A, Lazaros G, Psaltopoulou T, Zaromitidou M, Kourkouti P, Tousoulis D, Stefanadis C Low total testosterone levels are associated with the metabolic syndrome in elderly men: the role of body weight, lipids, insulin resistance, and inflammation; the Ikaria study Rev Diabet Stud. (2013 Spring)You should be able to get all the chromium you need by eating a varied and balanced diet. What happens if I take too much chromium? DHT - Netter A, Hartoma R, Nahoul K Effect of zinc administration on plasma testosterone, dihydrotestosterone, and sperm count Arch Androl. (1981 Aug) Zinc citrate (10 mg) + Ascorbic acid (150 mg) + Calcium citrate (250 mg) + Cholecalciferol (100 unit) + Magnesium oxide (250 mg)

Zinc citrate (15 mg/1) + Ascorbic acid (100 mg/1) + Biotin (300 ug/1) + Cholecalciferol (2000 [iU]/1) + Cobalamin (1 mg/1) + Folic acid (3 mg/1) + Nicotinamide (20 mg/1) + Calcium pantothenate (10 mg/1) + Pyridoxine hydrochloride (25 mg/1) + Riboflavin (1.7 mg/1) + Selenocysteine (70 ug/1) + Thiamine mononitrate (1.5 mg/1) + alpha-Tocopherol succinate (30 [iU]/1) Brittany E Yee, Phillip Richards, Jennifer Y Sui, Amanda Fleming Marsch Serum zinc levels and efficacy of zinc treatment in acne vulgaris: A systematic review and meta-analysis Dermatol Ther. (2020 Aug 29) Zinc supplements contain different forms of zinc. Each of these forms contains different amounts of elemental zinc, which refers to the weight of the zinc molecule by itself, for example: Glycemic Control - Ghaedi K, Ghasempour D, Jowshan M, Zheng M, Ghobadi S, Jafari A Effect of zinc supplementation in the management of type 2 diabetes: A grading of recommendations assessment, development, and evaluation-assessed, dose-response meta-analysis of randomized controlled trials. Crit Rev Food Sci Nutr. (2023-May-15) Brown KH, Hambidge KM, Ranum P, Zinc fortification of cereal flours: current recommendations and research needs. Food Nutr Bull. (2010-Mar)

2. Zinc Citrate

Rosacea Symptoms - Sharquie KE, Najim RA, Al-Salman HN Oral zinc sulfate in the treatment of rosacea: a double-blind, placebo-controlled study Int J Dermatol. (2006 Jul)

Zinc citrate trihydrate (10 mg) + Ascorbic acid (500 mg) + Biotin (150 mcg) + Calcium carbonate (100 mg) + Cyanocobalamin (10 mcg) + Folic acid (400 mcg) + Magnesium carbonate (100 mg) + Nicotinamide (50 mg) + Pantothenic acid (23 mg) + Pyridoxine hydrochloride (10 mg) + Riboflavin (15 mg) + Thiamine hydrochloride (15 mg) Having 10mg or less a day of copper is unlikely to cause any harm. This includes copper from food, water and supplements. Magnesium Beta-carotene gives yellow and orange fruit and vegetables their colour. It's turned into vitamin A in the body, so it can perform the same jobs in the body as vitamin A. Good sources of beta-carotene

Pilz S, Frisch S, Koertke H, Kuhn J, Dreier J, Obermayer-Pietsch B, Wehr E, Zittermann A Effect of vitamin D supplementation on testosterone levels in men Horm Metab Res. (2011 Mar) Note– the problem with consuming too many Zn supplements is that it actually prohibits the metabolism from properly absorbing other minerals and vitamins the body requires.

Shahid MN, Khan TM, Neoh CF, Lean QY, Bukhsh A, Karuppannan M Effectiveness of Pharmacological Intervention Among Men with Infertility: A Systematic Review and Network Meta-Analysis. Front Pharmacol. (2021)Uwitonze AM, Razzaque MS Role of Magnesium in Vitamin D Activation and Function J Am Osteopath Assoc. (2018 Mar 1) Costello RB, Moser-Veillon PB A review of magnesium intake in the elderly. A cause for concern? Magnes Res. (1992 Mar) Upper Respiratory Tract Infection Symptoms - Hemilä H Zinc lozenges and the common cold: a meta-analysis comparing zinc acetate and zinc gluconate, and the role of zinc dosage JRSM Open. (2017 May 2) Pneumonia Symptoms - Shah GS, Dutta AK, Shah D, Mishra OP Role of zinc in severe pneumonia: a randomized double bind placebo controlled study Ital J Pediatr. (2012 Aug 2)