If B12 is within range it is okay to supplement folic acid or methylfolate to improve folate. Folate is a water soluble vitamin so you won't overload as excess is excreted in urine. I don't understand what you are asking about iron?
I'd be rather more circumspect about excess Folic acid.
Adverse effects
Folic acid is generally considered to be a safe supplement. Its toxicity and adverse effects have been studied across a wide range of dosages and in different populations. In a review article that summarized the literature between 1966 and 1994, the potential side effects of folic acid were listed to be difficulty in ruling out B12 deficiency, interaction with drugs that inhibit folate metabolism, decreased zinc absorption, hypersensitivity reactions, association with malignancy, neurotoxicity and epileptogenic effects and increased susceptibility to malaria [79]. Weight loss, gastrointestinal, neurologic and psychiatric side effects were observed in an unblinded, uncontrolled trial after a month of taking 5 mg, three-times/day folic acid, which lead to study cessation [80]. Moreover, these effects were not observed in randomized, double–blind, placebo-controlled studies with the same dose of folic acid for 4 weeks [81,82].
B12 305 (anything under 500 can cause neurological problems)
Folate 15.88 (8.83-60.8)
He needs to supplement with Solgar or Jarrows sublingual methylcobalamin lozenges 5000mcg daily for about 2 months for the low B12 then reduce to 1000mcg daily as a maintenance dose.
When taking B12 we need a B Complex to balance the B vits. As B Complex contains Folate this will raise his Folate level. Thorne Basic B is a very good one, it contains 400mcg methylfolate, all the B vits are in a bioavailable form.
Is he doing anything about his low ferritin level?
Ah yes, you made liver and onions didn't you . A weekly meal of liver should be a great help where Ferritin is concerned. I use about 120g per meal but I think it's OK to have more than that, possibly up to 200g a week but be careful not to overdo it because of the high Vit A content.
I see Clutter has given you the link to Labtests Online, that's what I would have done, I have to look up what the other iron results mean.
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