Can Flintstones chewables correct iron deficiency?

Hey everyone! I have an iron deficiency. My ferritin is a 7 but my hemoglobin and hematocrit are normal. I don't have heavy periods, they only last 4 days but I don't eat an iron rich diet. I don't really eat a lot of meat.

My doctor recommended Flintstones chewables with iron. They have 100% iron (18mg) in them along with B12 and D (I'm also deficient in both of those). These ones don't have calcium so they won't interfere with absorption and they have 100% Vitamin C to help absorb the iron. Because of my severe anxiety, I'm going to start with taking half a vitamin daily and eventually work up to the whole thing (if I can handle it).

But I'm just worried...is it going to be enough iron? They say if you're a menstruating female you need 18mg a day but I'm guessing that varies depending on how heavy your period is. I know one thing for sure, it's better than nothing. Especially since it gives me some of the other vitamins I'm not getting enough of. Should I try it and then get my iron retested to see if it's helping?

I can't swallow pills and my doctor knows this and suggested the chewables. I also saw another doctor a while back for a second opinion who suggested the Flintstones chewables. So obviously they think it's going to work if they're suggesting it right? I would think they would tell me if it's not going to be enough. I just get worried cause you need 100% iron (18mg) a day and I'm worried if that's basically all I eat (since I don't eat a lot of iron-rich foods), then my iron will just maintain and not actually go up.

Also, because of my severe anxiety, I really don't think I can handle iron pills of any type. A multivitamin like the Flintstones would be the easiest for me. The majority of iron pills have to be swallowed whole and majority of the chewable/gummies that have more iron (and iron alone with no other vitamins) leave a strong metallic taste in the mouth, which I can't handle.

Thanks everyone!