What supplements have you tried? There are many different brands to choose from, so if you think one doesn't quite agree with you, then there are others you could try.
If your objection to supplements is on grounds of wanting to eat "natural" foods, then I would ask to you to give a sensible and coherent definition of what "natural" really means. Especially so because you posted this in the 'Philosophy' forum. But beware, many have already tried and failed
Also, what about other foods, products and practices that are not generally considered "natural"? Such as: foods fortified with vitamins and minerals (e.g. iodized salt), medicines and vaccines, foods that are grown in faraway places and shipped long distances, livestock that are given fortified feed, or basically the whole existence of modern humans.
There are also things that must generally be considered "natural" that are lethal poisons. The same is true for most contagious diseases like viruses and bacteria. Therefore one can't say "natural equals good".
In my view, being human means saying goodbye to "natural" in many ways (but not all!) and accepting that what is good for us is not always that which is "natural".
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