Which magnesium is best for vitamin D3?

Hello,

Don´t want to ruin it for you, but I do believe in always being safe rather than sorry.
I am 56 y/o and for not doing my homework in the past and taking advice from relatives, friends and what have you, have been sorry.
Having said that, I did learn the hard way and eneded up intoxicated or in the ER as everyone is different and what may seem safe and fine for one person for another person the exact same medication, interaction, vitamin, suppplement, etc. can be hell.

"In the United States, the Food and Drug Administration (FDA) does not regulate supplements the way it regulates prescription drugs. That means some supplement products may not contain what the label says. When choosing a supplement, look for independently tested products and consult a health care provider, registered dietitian nutritionist (RD or RDN), or pharmacist."

I do know about medications, there are many resources, clinical trials, information, a lot of data when one fully researches in depth, one earns that knowledge. I have been answering posts since 2013, and when I answer a post I have to be 100% certain that I have exhausted all aspects of data researched and then answer and provide the poster with the proper information, but always safety comes first in my books, and I believe after 12 years most people that truly researches, goes the extra mile, learns how to help another person, specially if one takes meds for over 28 years as I have been doing, for different "conditions".

"Can magnesium be harmful?
Magnesium that is naturally present in food and beverages is not harmful and does not need to be limited. In healthy people, the kidneys can get rid of any excess in the urine. However, magnesium in dietary supplements and medications should not be consumed in amounts above the upper limit, unless recommended by a health care provider.

The daily upper limits for magnesium from dietary supplements and/or medications are listed below. For many age groups, the upper limit appears to be lower than the recommended amount. This occurs because the recommended amounts include magnesium from all sources—food, beverages, dietary supplements, and medications. The upper limits include magnesium from only dietary supplements and medications; they do not include magnesium found naturally in food and beverages.

Does magnesium interact with medications or other dietary supplements?
Yes. Magnesium supplements can interact or interfere with some medicines. Here are several examples:

Bisphosphonates, used to treat osteoporosis, are not well absorbed when taken too soon before or after taking dietary supplements or medications with high amounts of magnesium.
Antibiotics might not be absorbed if taken too soon before or after taking a dietary supplement that contains magnesium.
Diuretics can either increase or decrease the loss of magnesium through urine, depending on the type of diuretic.
Prescription drugs used to ease symptoms of acid reflux or treat peptic ulcers can cause low blood levels of magnesium when taken over a long period of time.
Very high doses of zinc supplements can interfere with the body’s ability to absorb and regulate magnesium.
Tell your doctor, pharmacist, and other health care providers about any dietary supplements and prescription or over-the-counter medicines you take. They can tell you if the dietary supplements might interact with your medicines or if the medicines might interfere with how your body absorbs, uses, or breaks down nutrients."

Source: National Institutes of Health-Office of Dietary Supplements.

I suggest you make an app with a registered dietitian nutritionist.

Regards, masso