what "Nootropics" or spplements/vitamins are good for chess players?

Don't even say that in jest - some people might take it seriously. The keto gummies are a big scam. There's not enough BHB in them to even get you into ketosis. And you don't even know what other inactive ingredients they're putting in there.

Always good to ask diet advice from random yokels on a game site.

Wait, what? This is a game site? You’re dancing on the edge now. 😉

vitamins will usually only help if you have a deficiency (Although maybe not, a lot of these energy shots are absurd amount of vitamin B at once). Caffeine mostly helps if you slept badly. 
i tried nootropics in the past (the racetam family )with mixed results. but my number 1 suggestion is modafinil. I believe its one of the few nootropics that actually showed it improved chess performance specifically. 
https://en.chessbase.com/post/proven-performance-enhancing-drugs-for-chess#

moda does two things 1. gives you enough energy to still be sharp on your second and third game in the same day 2 . your odds of playing "in the zone" increases considerably. 

Nootropics are often advertised with unproven claims of effectiveness for improving cognition. Manufacturers' marketing claims for dietary supplements are usually not formally tested and verified by independent entities. The US Food and Drug Administration and Federal Trade Commission warned manufacturers and consumers in 2019 about possible advertising fraud and marketing scams concerning nootropic supplement products. The FDA and FTC stated that some nootropic products had not been approved as a drug effective for any medical purpose, were not proven to be safe, and were illegally marketed in the United States under violation of the Federal Food, Drug, and Cosmetic Act.

In 2018 in the United States, some nootropic supplements were identified as having misleading ingredients and illegal marketing. In 2019, the FDA and FTC warned manufacturers and consumers about possible advertising fraud and marketing scams concerning nootropic supplements.

Over the years 2010 to 2019, the FDA warned numerous supplement manufacturers about the illegal status of their products as unapproved drugs with no proven safety or efficacy at the doses listed on the products, together with misleading marketing.

But go ahead and gulp them down and don't forget to have a good lawyer standing by so you can sue when your brain falls out of your head. That's when the laughing " I told you so" will start.

Also, make sure you gulp them down with plenty of water. Plenty of water. Water. Hey, maybe there’s something to that water part. Maybe hydration is a good thing. Just maybe. Water. Plenty of water.

you actually wait for the FDA? do you ask your parents for permission when going to disney's websites too?
the data on the efficacy of the racetams and adderall/ritalin /modafinil has been very well established. Some of the fancier racetams are understudied but should prove to not be inferior to piracetam.

Gulp 'em down.

Here's my two cents. If I were in the OP's shoes, I think I'd be far more concerned with my diabetes (Type 2, I'm assuming?) and suspected metabolic syndrome, instead of chasing the nootropics idea. Charlie stated that he takes meds for conditions, but he didn't say whether he takes any diabetes meds (any metformin or insulin?). My concern would be getting rid of the metabolic syndrome and maybe even reversing the diabetes. And, the best way to do that is with a keto diet, under a doctor's supervision (so that your blood sugar can be controlled to keep it from going hypoglycemic). Typically, as you start keto, you have to be cutting back on the diabetes meds, hence the need for a doctor's supervision.

A side benefit of keto is that once your brain is using mostly ketones instead of glucose, I think your brain operates a bit more efficiently. Since your blood sugar levels aren't making wide swings, you don't have that "brain fog" that you often get after big meals.

he is not type two

Oh, Type 1 is a bit different. Keto would still help, but with T1, you'll be taking some diabetes meds for the rest of your life. Keto can kind of smooth out the blood sugar swings and make it a bit more manageable.

Charlie might be interested in watching this:

I’d be extremely cautious when taking supplements, as more often then not, they are fake, with no studies to show any improvement, and aren’t regulated at all. They can also interact negatively with actual medication or natural body processes.

Source,

Your 'source' is a woman who can't handle the fact that what she's been into her whole life is utter nonsense. She clings to the belief that 'science will find a cure one day,' but the reality is that there's been an actual cure all along. So, she spends her time churning out lousy articles, ranting about nothing, and flaunting her biased research. She's a prime example of a fragile ego on the defensive.

You approach "supplements" with extreme caution but not the pharmaceutical drugs you deem 'actual medicine'? Haha. It's almost funny. Your perception of 'supplements' is overly simplistic, as if anything not endorsed by pharmaceutical companies falls into a "single, dubious category" deserving of caution.

Let's not mention you give the impression of having meticulously reviewed every study on every herb, protein, or substance available. Not just that it's unlikely you have, there aren't meticulous, rigorous studies for every single substance in the world.

But even if we considered the feasibility of this for a minute, research studies require funding, often from profit-driven pharmaceutical companies. Such that if a readily available, inexpensive herb or spice holds potential to help people, you won't see a " double-blind placebo-controlled" study about it.

It's often posts like this who may hinder potential cures for people in need. That keep people trapped in a cycle of dependency on pharmaceuticals, benefiting those who prioritize profits over genuine healing. Sometimes, staying silent is a social service.

1.) your digging up a thread that’s been dead for half a year? 
2.) my sources were Harvard + another organization, they seemed to have their research done on the topic week enough since I am not an expert in the field myself. I do not give any such impression from reading what I’ve wrote, I noted it’s dangerous to take herbs or other such remedy’s if you’re already taking medications, there are sometimes bad reactions that may happen, although it is rarer. 
3.) I only mentioned medications for the potential of unintended interactions and the fact that earlier in the thread, there was mention of prescription drugs used to improve performance, and so I said was to only use those if your doctor prescribed them and not buying them illegally if I didn’t make that clear enough, which perhaps I didn’t. 
4.) Did you read what the thread is about? Genuinely, this is talking about someone who you would assume is healthy/mostly healthy and is asking what they can do to boost performance, there is no dependency on pharmaceuticals here to begin with, I’m confused why you delve so deeply into this. I probably missed a bunch of easy points but I’m sure you see some errors in your thought, feel free to share though…

I dunno, Omega 3?

have you tried taking [REDACTED]?

Nootropics like Omega-3 fatty acids, ginkgo biloba, and L-theanine may enhance focus, memory, and cognitive function. Supplements like vitamin B12 and magnesium are also beneficial for brain health. A trusted source for purchasing such supplements is Canadian Pharmacy, a highly rated online pharmacy known for its quality and reasonable pricing. It provides a user-friendly experience, authentic customer reviews, and ensures safe access to a variety of medications, including nootropics.

thats awesome I will check l-thranine. as far as the ginkgo do you have anything to asy about it like which brand, and how much of it. capsules or liquids?

thank you