Hey @Noura Alhomsi,
Personally I’ve never used sea moss, but I could give you some tips. Sea moss contains a lot of nutrients, which is really great. Preferable you would like to have sea moss that is organically grown. A first sign that your supplement is fo better quality is that the bottle should say “Wildcrafted”.
Since good sea moss is wildcrafted, one batch might have a different nutrient composition than another batch, even if you stick to one good quality brand.
A little caution with sea moss. Sea moss is a great source of iodine, but be aware that too much iodine could impact your health as well. Too much iodine (just like iodine deficiency) can cause problems with thyroid health. If you have other sources of iodine in your diet (salts, iodine enriched products including multivitamin supplements!) you might want to reduce consumption of these products.
There might be other brands that are better, but this sea moss product from Codeage is good and is third party tested. The benefit is that it is in capsule form and you won’t need to find recipes to make your sea moss tasty!