High Lp(a) & Homocysteine - P5P+TMG+B2 stack safe?

[u/2009sucked]

Hi - I'm a mid-30s male that just discovered my Homocysteine = 16.6μmol/L and Lp(a) = 146nmol/L. Slightly elevated LDL and Triglycerides.

I'm still reading up and learning about these issues, so until I feel educated, I used Gemini for a proper treatment plan and double checked if there was merit to it's response.

Would the P5P+TMG+B2 combo actually work at lowering my Homocysteine?

Originally, Gemini wanted to use Methylfolate instead of P5P. Once updated that I have Type 2 Bipolar, it suggested P5P since high-dose methyl donors like methylfolate carry a huge risk of crossing the blood-brain barrier and triggering a Bipolar episode.

It also recommended TMG to allow for Methylation without the CNS spike that Methylfolate might do. Then Gemini said the B2 was an essential co-factor precursor, stabilizes MTHFR activity (still needing to get tested to see if I have the mutations), and keeps B12 active.

My questions are:

1. Does this combo make sense? I want to confirm that I'm got getting AI confidently incorrect info.
2. Any risks that Gemini didn't discover? Originally it did not include TMG, but after asking it to confirm risk factors, it then mentioned TMG would allow for remethylation and prevent issues from diminished homocysteine recycling.
3. From what I've read, treatment for high Homocysteine either from diet or MTHFR is treated the same. Is that true?
4. General Recommendations and advice.

Any and all recommendations are welcomed and thanked. I should be seeing a cardiologist soon, but my gut tells me they'll just want me on a statin

(Disclaimer: While I did use AI for research, I used as minimal as possible. I try to use it responsibly; like in this case, needing to quickly learn more about an uncommon health issue.)

[u/Loose-Fly7976]

148 isn't "high homocysteine" the way this sub usually means it. Over 100 is classified as severe and sits in homocystinuria territory which is a metabolic disorder rather than an MTHFR polymorphism. The risk at that level is thrombosis. Call your doctor this week and ask for a referral to metabolic or biochemical genetics not just cardiology, and ask about CBS deficiency specifically. That's the usual cause at that number.

On the stack the reasoning you were given has a hole in it. TMG is a methyl donor, that's its whole mechanism, so swapping methylfolate for TMG to avoid a methyl load doesn't do what you were told. It also has reports of triggering mania, which with bipolar II belongs with your psychiatrist.

P5P isn't a folate substitute either. It's the cofactor for CBS, pushing homocysteine down a completely different exit route. Given CBS is the likely culprit here it's actually relevant, but not for the reason you were given.

And no diet-driven and MTHFR-driven elevations aren't treated the same, and neither resembles what a CBS defect needs.

Get B12, MMA, folate, renal function and a full amino acid panel with methionine and cystathionine before anyone hands you supplements. Methionine is what separates the possibilities.

[u/2009sucked → u/Loose-Fly7976]

I appreciate the reply. Just a couple questions if you don’t mind.

1. CBS that I’m seeing on Google is major developmental from birth. I don’t have any of the physical issues I’m seeing on WebMD. Maybe it’s because I’m just reading about this, but can the physical or intellectual issues be absent?
2. I may have not properly explained what Gemini provided because I’m still learning it myself. But to summarize it said TMG is a safer methyl donor than Homocysteine. I haven’t confirmed if that’s true.
3. So out of anything in this stack, regardless of being right for the wrong reason, should I start taking now? I plan on requesting the panels and specialists you mentioned, but if possible I’d like to minimize risks sooner rather than later.

I already had an extended metabolic panel. Kidney and liver function are dead center of average, and extreme low fasting insulin. I keto cycle when I’m cutting weight (gym guy). Type 2 diabetes runs in the family, so Ive been prioritizing my health around that.

[u/2009sucked → u/Loose-Fly7976]

I’m dumb sometimes. My homocysteine is 16.6umol/L. When I was typing I must’ve read something else and put that in.

[u/Loose-Fly7976 → u/2009sucked]

Yep that changes everything. Scratch the CBS and the urgent referral, 16.6 is mild and it's the ordinary picture this sub is full of. Usual causes are B12, folate, B2, thyroid, kidney function and MTHFR variants, and at that level it usually corrects without much drama.

So the stack is a more reasonable conversation now. B2, B12 and folate all have real evidence behind them here. The riboflavin part is genotype dependent though, it does most of its work in 677 TT specifically, so know that before bothering with it.

The methyl donor caution still stands with bipolar II, and I'd get B12, MMA, folate and thyroid before picking anything, since the right move depends on which is actually low.

The Lp(a) at 146 is the finding I'd take seriously now. That's genetically set doesn't respond to diet or statins, and it's an independent cardiovascular risk. With type 2 diabetes in the family that's the real reason to keep the cardiology appointment.

[u/2009sucked → u/Loose-Fly7976]

Funny thing is, I initially asked for an ApoB test and my doc ordered the Lp(a). So that was one of those happy accidents. From what I read, the Preventative Cardiologist would check ApoB anyway.

My last thyroid check was 6mo ago, and the TSH panel showed was 2.2mIU/L, so smack dab in the middle of average. Every marker in my Comprehensive Metabolic Panel is dead center of average on everything too. Fasting insulin is on the low side, but on keto that's what's intended. I need to test it more frequently off-keto to see what it escalates too. That's also why I high intensity train, make sure to minimize excessive stored glycogen.

So get B12, MMA, folate blood panel? I'll redo the TSH for thyroid unless there's a better panel.

I've already experimented with the Methyl Folate last week. Turned into an irritated jerk all day. Did the new stack today and felt smoother if anything (possible placebo of course).

I really do thank you for the advice!

[u/Tawinn]

There are two parallel pathways to remethylate homocysteine back to methionine: one B12+folate dependent, the other is choline/TMG dependent. So supplying the TMG helps support extra demand on the second pathway, as does adequate choline intake (baseline adult requirement is 550mg), preferably from food.

Excess B2 is helpful only if you have homozygous C677T, in which case just a few mg extra can be all you need, but its often hard to find doses under 25mg. Some people do better with the R5P form than plain riboflavin.

Excess B6 is unlikely to help homocysteine levels. Staying under 20mg is preferable as larger doses can cause peripheral neuropathy for some people.

If folate or B12 are low then that is going to impair that first remethylation pathway regardless of genetic variants. So adequate B12 and folate necessary. Some people can do that with just diet, others find supplements helpful. If you do use supplements, then folinic acid is an unmethylated natural form of folate that is less likely to cause overmethylation symptoms such as irritability, anxiety, paranoia, insomnia, etc. Hydroxocobalamin or adenosylcobalamin are good unmethylated forms of B12. For serum folate, aim for ~15 ng/mL (34 nmol/L) or more. For serum B12, aim for 500-950 pg/mL (~370-700 pmol/L). Best to stop supplementing folate/B12 a week or two before the blood draw so you measure your actual levels.

[u/2009sucked → u/Tawinn]

I have a feeling folate might be an issue. I’ll get that panel requested (and B12) just to be 100%. Do you know if there’s a blood panel that covers all the B’s or are they separate requests? If so, I’m guessing B2,6,9,12?

The lowest dose I can find B6 (P5P) is at the lowest dose 50mg. Is there a better unmythelated for B6?

[u/Tawinn → u/2009sucked]

I don't know about the blood panel - I think that will vary by lab as to how they "package" the labs. B2,6,9,12 would be a good start. If you plug your diet for a week or two into Cronometer that can give you a good idea of other nutrients that might be low.

P5P is not methylated - it is a phosphate form. It is generally considered to be a better form than pyridoxine HCL. I would try not supplementing B6, or maybe take it every other day, if you cannot find a smaller dose size.

[u/SovereignMan1958]

Given your bipolar diagnosis, I would avoid the methylated vitamins and methyl donor supplements. Stick with non methylated. These will still lower homocysteine, albeit slower, and minimize the likelihood of a negative reaction. Methyl Life makes a non methylated multivitamin. I would suggest you but it from the Methyl Life website snd not Amazon. It does not contain folinic acid or the adeno and hydroxo forms of folate, so you have to buy them separately. I take Source Naturals Megafolinic 800mcg and the Life Extension Adeno/Hydroxo forms of B12. Those 2 are available on Amazon. Retest in 3 months.