Vitamin strengths

[Yetiyoga]

I occasionally take a multi vitamin when I remember but need to start remembering more. But I've realised the ones I buy don't have a high strength. Anyone know what is the general amount of each thing I should take? I was thinking of taking a multi vit (big standard supermarket kind) plus a berroca. And have got a vit D3 with k2 spray coming today (it wasn't the max strength but I think 3000.
Any help greatly received!

www.nhs.uk/conditions/vitamins-and-minerals/vitamin-d/

The above NHS link specifies not to go above 100 mg per day as it is dangerous. Your packet should clarify how much is in each tablet. The recommendation is 10mg per day. I have a d3 1000 IU per day which is already 25mg. If in doubt, go to a pharmacy and double-check.
People who have been prescribed regular high dosage vitamins due to deficiencies would normally have regular blood tests to check levels. Ps I have no medical qualifications but that was my basic understanding from a pharmacist when I enquired about 2 years ago but it in doubt, check with a qualified professional

Thanks @fishywaters
Don't worry, I'm not going to go for 3000mg haha! It is 3000 IU.

3000IU is 75mg I believe so my point was don’t take that plus a multivitamin etc which could take you over 100mg - depending on the multivitamin. Personally I buy the 1000 IU tablets so I can vary dosage depending on winter/summer months - so I have the option of taking 1/2/3 tablets etc. I don’t think I could stomach 4000 IUI anyway.

It isn't uncommon for 'high strength' multivitamins to put in higher doses of cheaper to produce vitamins to levels beyond what would be useful or even safe (some B vitamins particularly get this, which is why so many of them get warning labels as high amounts of B6 an extended period may cause nerve damage) while having fuckall of other vitamins and minerals they're advertising.

So "high" and "max strength" aren't always the best and our knowledge of supplementation is limited - they don't work the same as either eating or sunlight conversion. Like Vitamin D with K2 - still very early days, and currently the best recommendation I've seen is 100mcg of K2 supplemented (MK-7 type which are most of them) for every 1000 IUs of Vitamin D supplemented (with higher doses for particular health issues). It's generally recommended that over 4000 IUs for an adult is only for those under medical supervision. There is also the issue of liquid sprays vs liquid drops vs tablets vs chewies, there is still a lot of uncertainty going on.

Beyond that, it depends on one's needs, current diet, and so on. The link previously given by fishywater includes typical safe ranges for most supplements, to our current knowledge, for those not being treated for deficiencies and which groups should consider more supplementation. For example, iodine is one commonly overlooked and it's recommended to supplement if one doesn't eat fish, but really shouldn't be 'max strength' as we only need 0.5mg daily (they even link to the vegan society's multivitamin which I find interesting, slightly higher levels, but below the 'max' levels I see in shops that get warning labels).