Q: as a dietary supplement, take 3 tablets a day at dinner.

does it mean after dinner? or before dinner? とはどういう意味ですか?
A: "at" is vague and doesn't give information about before or after. But I would guess after simply because that's how most dietary supplements are.
Q: dietary とはどういう意味ですか?
A: Dietary is about your diet. Which is what you eat.


Q: dietary restriction と food allergy はどう違いますか?
A: Dietary restriction: You don't eat pork because you're Jewish or Muslim.

Food allergy: a damaging immune response by the body to a substance a type food.


Q: dietary supplement / nutritional supplement は 英語 (アメリカ) で何と言いますか?
A: QAの全文をご確認ください
Q: what do ‘vegan-free,vegetarian-free,gluten-free,diary-free,dietary requirements,and meat-free mean? は 英語 (イギリス) で何と言いますか?
A: Thanks. But what I ask is what “diary-free”and “dietary requirements” exactly mean?
Q: dietary habit は 英語 (イギリス) で何と言いますか?
A: If you have food that you cannot eat:- "special dietary requirement".
If it is the food that you usually eat:- "my normal diet" or "food that I am used to".


Q: -Do you have any dietary restrictions?

Is this question used to ask if one is allergic to any foods?

It may mean "food allergies" or "on a healthy diet (health-conscious people's restrictions)
Q: I thought too that dietary fiber help regulate bowel movement. この表現は自然ですか?
A: i thought that the dietary fibre helped regulate bowel movement too.

what you said still made sense to, but didn’t flow that smoothly. i hope this helped :)))
Q: dietary の発音を音声で教えてください。
A: QAの全文をご確認ください
Q: It is important to take dietary fiber, fermented food and lapctic acid bacteria to improve the intestinal environment, which is the biggest immune organ in the body. この表現は自然ですか?
A: lactic acid
Q: When you say a dietary supplement, does the term refer to a pouch (bottle or what ever) of tablets (pills, capsules, or whatever)? Or does it refer to one tablet? I'm thinking too much. Thank you in advance!
A: "dietary supplement" usually refers to the item as a concept or the item in general

"He takes dietary supplements." just generally means that he takes a variety of pills that supplement his diet.

"He takes fish oil." means he takes consumes fish oil pills from day to day, not just one pill

"He takes a fish oil pill." means he is taking one pill.

If you want to talk about one pill you usually need to specify that it is only one pill.