Magprim, opinions and questions

Good morning. I use taking Microgynon birth control pills. I would like to start supplementation with the drug Mag-Prom cramp, in which in addition to magnesium 300mg there is potassium 300mg, zinc 5mg, iron 3.5mg, chromium 30μg, vitamin B6 4mg, vitamin B12 2μg. My questions to you are as follows: 1. Can I use this medicine and it will not affect the effectiveness of anti-contraception? 2. I did my last blood tests at the beginning of January this year. I have never supplemented with iron tablets and the study showed me 132.85 μg / dl. Before I start using the drug, I should first do research on what level is iron and vitamin B at the moment? 3. Will this level of iron in Mag-Prim contraction affect dta?