@rbusch1944 Are you taking this much because a doctor told you to do it for a specific reason? Or from something you read? Keep in mind that chronic diarrhea can deplete a lot of nutrients in your body, so it is not something to "just live with."

If you are not under doctor's orders, perhaps you can research foods rich in magnesium and add as much as possible to your diet. Then take a VERY small amount as a supplement - there are tablets as small as 100mg, and even these can be divided.

If you are under doctor's orders, discuss whether you can do this with them. Maybe keep a food diary to show how you have increased your consumption.

Here is a list of magnesium-rich foods:
https://health.clevelandclinic.org/foods-that-are-high-in-magnesium
And here is a more comprehensive list you can research:
https://www.careomnia.com/nutrition-tool-nutrient
Here is how I get at least 400 mg of magnesium from my diet:
Breakfast: Coffee with 1c milk (90mg +25 mg)
Greek yogurt with a banana or raspberries & a handful of pumpkin seeds: (40mg+30mg+150mg)
Or buckwheat pancakes + peanut butter (40mg+100mg)
Lunch: Avocado on crackers (I cannot eat wheat so I substitute) (58mg+40mg)
Or hummus on crackers (24mg+40mg)
Or peanut butter on gluten-free whole grain bread: (100mg+20mg)
Snack: Cashews (70mg)
Dinner:
Baked potato with skin topped with cheddar (42mg+7mg)
OR boiled sweet potato (70mg)
OR baked squash (80mg)
OR bean soup (150mg+)
OR chili with meat and beans (30mg+70mg)

So you can see, the choices are many!

Another was to lessen symptoms is to take the magnesium in divided doses throughout the day, on a full stomach after a meal to "dilute" its effect. This is not something that needs to be taken all at once or on an empty stomach.