You can't beat MSM for constipation but it's probably actually caused by dehydration as the body has to steal water from the colon when it doesn't get enough as everything but plain old water is processed as food.
Plus, I think it makes my water taste like good old fashioned well water. Yummy!
I use about 1/4 tsp in every 20 oz glass of water I drink but there are days I get dehydrated because I drink so much coffee. Then I set the timer on my phone to go off every 2 hours and drink 8 oz when it goes off. That's about 10 good gulps.
After years of chronic constipation, I haven't been constipated for...I don't even know how long. But the magic bullet, for me, was MSM in my drinking water.
I work at home and always have a glass of ice water at my side. I use one of those 1 gallon glass jugs like the organic apple juice comes in to catch the water from my Berkey filter with 4 teaspoons of MSM per gallon. It's basically a recipe for really tasty mineral water. Like well water used to taste when I was a kid.
I just use the big, 5 lb jug that is for horses. And the reason I do that - aside form the fact that it's a whole lot cheaper - is because...well...I look at it this way: If contaminated product gets to just one million dollar race horse, heads are going to roll and that supplier is ruined while a pharmaceutical company can poison thousands and thousands of people, every single year, and still make billions of dollars and hit their target stock price. It just seems logical to me. Same with unprocessed sea salt and diatomaceous earth.
When people get sick, people just think people get sick but when one race horse or one of a cattle rancher's animals or even one wild animal or one animal at the zoo gets sick, Sherlock Holmes gets a call, the game's afoot and the culprit, if it's human, runs for its very life - ROFL! That's the way I see it.
Don't load up on MSM because there's no reason for it. If you start getting "cleansing" reactions, back off a little bit, at first, because it's going to open you up and clean you out. It's a bit like a microscopic, internal steam bath that opens the pores of your cells and flushes out the toxins which will include caffeine, nicotine and any drugs you may have taken in your younger, wilder days that the body has stored in your fat cells so try it and see what happens. If things get woolly, then cut the amount in half and wait a bit before you increase it. Don't overload your liver. If you're an active person, your body can eliminate a lot of toxins with your sweat but if you're NOT an active person, then you want to flush more slowly. If you want, you can use a warm cayenne foot bath to draw some of the toxins out that way. The bottom of the feet, the palms, the armpits and the face have the most concentrated numbers of sweat glands.
It will also release any antibiotics you've taken from your fat cells where the body stores toxins when it's overwhelmed. Unnatural antibiotics are toxins. So you might also want to add some Vitamin C and probiotics AND avoid refined sweets for a while to help avoid a candida-type backlash that can be brought on by the release of antibiotics from their fat little jail cells.
And if you've EVER taken antibiotics, make no mistake - they're IN there - they're in JAIL, but any cleanse that actually cleanses is going to let some of them OUT and MSM is the son of the best physiologically cleansing "jailhouse lawyer" on the planet, which is DMSO. But, even so, I'd MUCH rather deal with candida than with chronic constipation. It's like the difference between being annoyed to the point of going nuts and being slowly tortured to death. Candida is far less dangerous than some of the things people do in an effort to eliminate it but chronic constipation has a direct effect on your life expectancy because THOSE toxins are NOT in jail. Your body cannot produce fat fast enough to catch them all.
To help with anal problems brought on by constipation - hemorrhoids, fissure, bleeding - cleansing is good. You can make a little cleansing bidet out of a laboratory "wash bottle". One of those translucent white bottles with the cap with a "spigot" on it. You can get them on Amazon or a regular lab supply place or whatever. Here's what you do:
The bottle is designed to squirt water without having to turn it upside down and has a tube inside that fits into the cap. Remove that tube. That way, you can use it upside down, like a faucet, and squeeze it to squirt the contents.
Put a tiny bit of Bronner's liquid soap in the bottle and fill with cold tap water. Shake it up and you have what is essentially a liquid baby-wipe! When you use the bathroom, you can simply turn it upside down, aim and squeeze to cleanse. Not just for when you have a BM but you can use it to keep clean BETWEEN BMs. Just to keep that area clean.
To dry yourself off, you can cut up old clothes into washcloth size pieces and just throw them away after you use them or you can wash them or you can get one of those twelve-packs of cheap wash cloths (wash them before you use them) and you have a stack of reusable wipes. BUT you don't want to "wipe" - you want to gently pat yourself dry. Then refill your bidet bottle for next time. And, of course, you can add anything you want to your cleansing liquid - ACV, aloe, maybe a little cayenne if you have bleeding or whatever you want. You can use a gallon-size vinegar bottle to mix up large batches from which to refill your wash bottle.
You can get wash bottles in various colors or you can decorate and label them with a Sharpie or whatever you want so that everyone has their own bottle. The bottles come in various sizes so you can get smaller ones for child-size hands and larger one's for grown up-size hands. They're also great for car trips or your beach bag. Just fill and stick them where they can stay upright and use them to wash hands or rinse feet or whatever.
Wash bottles are the neatest thing since sliced bread for all kinds of liquid applications, both right side up with the tube installed, as a water pik or for olive oil in the kitchen or without the tube, upside down for things like squirting a disinfecting solution under the rim of the toilet. You can even use them empty, as a little air duster.
I prefer laboratory-quality bottles as they are non-reactive - you can keep straight ACV or even alcohol in a laboratory-quality bottle, no problem. I'm not sure about the cheap ones. I have a couple but I just use them empty, for air, like for blowing lint and dust out of my sewing machine and the vent on my computer and debris out of my keyboard, stuff like that. Oh, and I have one with some soapy vinegar in it for laundry purposes.