u/Great_Manufacturer33

I had a 1000mg iron Infusion 5 weeks ago. Energy increase and lowered pain occured almost immediately and lasted about 3 weeks or so. A 3 week lab showed really responsive results (Ferritin 800ish). Unusually, my energy dropped and pain returned to baseline from weeks 3-5. Now, only yesterday, energy has again returned and the pain's mostly gone - most notably in the quadriceps. As an amateur guessing, could this be a case of phosphorous depletion with subsequent return through diet? I'd like to try and get a grasp of this to manage better moving forward. Any similar experiences? Advice most welcome. TIA.