I've been back and forth to my doctors for about 6 months now with severe tiredness resulting in difficulty doing everyday tasks and widespread pain. Originally diagnosed with a b12 deficiency and placed on injections once a month, levels went up no improvement in symptoms, then diagnosed with low vitamin d months later along with low folate. I've now been told my iron levels are low again so my serum iron is 4 and my ferritin 6. I started my tablets to up my iron a few days ago and it's left me feeling worse than ever before. Dizzy spells are massively worse and I've had a mild headache since starting them. Does anyone know if this is normal or can share a similar experience? Just finished the school run and genuinely thought I was going to faint in the play ground. Went weak and couldn't see straight almost as if I was drunk. Tia