I've never felt any "hangover" effects and I've never experienced constipation. I haven't gone a day without kratom in over 3 years, so I'm certain that I'm addicted.
I say all that to ask this:
If kratom suddenly became unavailable, will I be totally incapacitated? For how long? Should I go ahead and stock up just in case? I really have no issue with being dependent for the rest of my life, but I hear rumblings about kratom being banned and that concerns me.
I've never had any hangovers from it, either. I have had really horrific constipation at 30-40g per day though, like really bad, really painful. I'll take about 10 of the 200mg ducosate sodium stool softener pills every day, which helps. But the real helper is taking 2 teaspoons of psyllium husk powder per day. I will do that for the rest of my life regardless, it's most of your soluble fiber you need for your diet, and it makes everything move along perfectly. I've been on either kratom or suboxone for a while now and that's all I'm taking to combat constipation and I haven't had any issues since I started on the psyllium husk.
You will certainly experience pretty severe withdrawals. I would consider slowly stocking up so you have an emergency supply, and if it does get banned, prepare to taper and come off of it.
Personally, I hate being addicted to kratom, I end up dosing around the clock, and I wake up at 6am in withdrawal, take more just to finish sleeping. I feel like I am always on the edge of withdrawal even when it reaches its "peak" after taking a dose. The first dose in the morning after I get up will have me still feeling withdrawals, I have to wait 2 hours to take the next dose to finally feel semi-normal, because if I take the second dose too soon, I get the dizziness and nausea of taking too much. The best I ever feel is just "not bad"... never good. It's really shitty. I'm always in kind of a bad mood and irritable, all day every day. That's why I got some suboxone and am slowly tapering. I'd rather come off suboxone than try to come off kratom because kratom withdrawal restlessness makes me feel like I'm going to go insane, it's like the worst RLS, except in every part of my body. Hellish.
Some people say they never get bad withdrawal from kratom, and I will say, you don't feel like you have the flu or get nauseous or anything like with true opiates. I also hear some people say they're not really bothered by any significant restlessness with opiate withdrawals, I have even heard people saying "omg I hate withdrawal because all I can do is sleep". For me, the restlessness is BY FAR the worst part of opiate withdrawal and I would kill to be able to sleep a wink at all. I am thinking that maybe if you're one of the lucky motherfuckers who doesn't get severe restlessness from opiate withdrawal, you might not experience really bad withdrawals from kratom, because that is its most pronounced withdrawal effect. But for me, the horrific restless limbs is the worst feeling imaginable. So therefore, severe kratom addiction has the most unbearable withdrawals of any opioid I've come off of. Absolutely no chance of sleeping for a week or more, and every moment is torture. As I have gotten older with more years of opiate addiction, and more withdrawals, under my belt, the withdrawal gets worse and worse, and longer and longer. The first time I came off of kratom, it wasn't too bad. lasted 3 days, and I was fine. Nowadays, it's more like 10 days until I can sleep or feel even slightly comfortable in my own skin.