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There is no recommended dose without knowing your current blood levels.

Get yourself tested - if you're severely deficient start taking large doses (3000IU - 5000IU or more) for a few weeks, get yourself tested again and then adjust.

If you're not deficient just keep doing what you're doing.

I asked this before and apparently in the US you can find 5000IU pills. Here in Canada all I could find was 1000IU and I take 5x of the pills instead.

It still does the job, I presume.

Are you (or any of the parent comments) noticing anything after supplementing? As arguably a hormone I'm curious if there's any experientially observable effects from high doses.

No I personally have not felt anything taking it at 5000. Or you know, not taking it after a period.

It's just like taking a vitamin. It's also a low enough dose to be safe for my adult body size/weight.

In USA 5000 IU is pretty easy to find at any store that sells vitamins. This is what I buy all the time.

Yes, costco sells 10000 IU ones.