Uh, no. This is simply not true with sublingual tinctures where the concentration is very well-defined per drop. This only holds true for brownies and other food-based edibles where you don't know the concentration...

I can also recommend tinctures over edibles, but be sure to use a highly concentrated one, so you don't swallow any (this is actually quite difficult if you hold any more than a tiny amount of liquid under you tongue or between your gums and teeth!

For at least the first few times using edibles, I'd also advise the GP to be extremely cautious, and especially so if you don't have a precise source; the effects of vaping/smoking are 1-2 hours, but can be 5-7 with edibles - if you have too much, you're in for something akin to a bad trip (it's not the same, but the closest I can describe it), feeling nauseous, anxious and paranoid. It really is absolutely horrible

Curious why you are recommending against swallowing tincture drops. I typically swish the drops around in my mouth for 30s-2min depending on how quickly I want the high to onset, then I swallow. There are also times where I only swallow and I still get high.

Sure, drops will last longer than smoking/vaping, but the high is much milder and less intense (holding the amount of THC/CBDs constant). As someone who used to get anxiety and paranoia from weed, I can say that drops are much more benign in that manner.

"This only holds true for brownies and other food-based edibles where you don't know the concentration..."

I've upvoted both of your comments. Since a lot of people won't draw the distinction between the different types of edibles, the previous warning is warranted.

Thanks, apologies if my comment was slightly dismissive. I don't think the replier caught the distinction I was making.