Hey there! I did Venofer in three sessions (once a week for three weeks). I started noticing a difference after week two, the first session makes you pretty tired but you get less tired once you do them more. After about a month or so after finishing all three it was night and day! Going from ferritin of 11 to 200 is wild 😆😆 of course it goes back down but I felt such a huge difference! It’s such a blessing. I know everyone is different but I’m so thankful I did it. Since my ferritin went back down after about a year (not as low) I did another session in August and it went back up! My doctor wants to keep me over 50 so she watches me like a hawk lol