supplements like echinacea and kava can impact breast cancer drugs and other supplements can from blood thinners to cholesterol and anxiety meds, even radiation therapy. >> people think, you know, it can't hurt, but biggest problem is that have there are actist ingredients in dietary supplements that act same way that meditions do in the body. >> reporter: many want the fda to regulate is uppants. >> that just because something is natural safe. supplement industry stresses they can be health and as long as patients tell their doctors what they are taking. shelly now takes six. >> i believe in taking the vitamin supplements because i wanted to do anything that i could to beat cancer. >> reporter: the good news, today shelly learned she's cancer-free. tom costello, nbc news, boston. >>> we're back in a moment with the proud new parents in a suddenly very busy nest at th i use what's already inside me to reach my goals. so i liked when my doctor told me i may reach my blood sugar and a1c goals with once-weekly trulicity. trulicity is not insulin. it helps activate my body to do what it's s

them more toxic and many prescribing doctors never know the patients are taking supplements like echinacea and kava can impact breast cancer drugs and other supplements can interfere with a wide range of prescriptions from blood thinners to cholesterol and anxiety meds, even radiation therapy. >> people think, you know, it can't hurt, but biggest problem is that have there are actist ingredients in dietary supplements that act same way that medications do in the body. >> reporter: many want the fda to regulate is uppants. >> that just because something is natural doesn't mean that it's safe. >> reporter: supplement industry stresses they can be patients tell their doctors what they are taking. shelly now takes six. >> i believe in taking the vitamin supplements because i wanted to do anything cancer. >> reporter: the good news, today shelly learned she's cancer-free. tom costello, nbc news, boston. >>> we're back in a moment with the proud >>> awful news from canada tonight where actor dillon o'brien has been seriously injured on the set of a new "maze runner" movie in vancouver. the young

echinacea everybody takes for if you're on a drug for cancer and you take echinacea, the drug dose may too high or low. calcium. it combines with things like antibiotics so they are not absorbed. you take antibiotic for a serious infection and taking calcium with it and it doesn't work that well. you can go down the list. many have well interactions. tell your doctor as soon as you get there, these are the supplements i'm on. and make him or she look and make sure there is no interaction with the drugs you're taking. >> how do we know this? this is very scary to me because i take calcium and i think i'm doing a good thing. >> calcium is a whole other story. yet a positive story showing calcium has a benefit. >> but you don't also have cancer, right? >> not that i know of! >> i think the important point is you may have some conflict between drugs you're taking to make sure you get somebody who knows. >> exactly. >> look at them and tell you. >> the pharmacists checks things with your prescription drugs but they don't with the supplements. when you go there your doctor or what else i'm t

echinacea and cava can impact blood pressure drugs. others can interfere with radiation meds. >> the biggest problem is that there are activity ingredients in dietary supplements that act the same way as medications do in the body. >> many want the fda to regulate supplements. >> just because something is natural doesn't mean that it's safe. >> the supplement industry said it's important patients tell their doctors what they're taking. sheli now takes just six. >> i believe in taking these vitamin supplements because i wanted to do anything that i could to beat cancer. >> the good news, today sheli learned she's cancer free. tom costello, nbc news, bosn. >>> time right now 7:15. still ahead, pope francis is expanding his presence on social media. ee where you can now follow the pontiff. plus all you pet parents out there, do you know what to do if your furry friend gets into a sticky situation? our resident veterinarian will our >>> all right. wcome back. all pet owners know that our four legged friends can sometimes get into a bit of

this is echinacea stuff kind of in the flu and cold season grind some of these up on your way out then't do that. all sorts of flowers here and a lot greenery. if you like to head to the parks and you don't have the time to do it come down to the convention center. i love it. we'll be highlighting this throughout the morning on "good morning america" and of course talking about the weather as well. matt and tam. >> all right. glad to have you with us rob. >> we'll be watching "gma" starting at 7:00 a.m. >> kicked out for grinding flowers. >> i think he would be. >> grinding the brakes already here this morning on the 30 bypass. just starting to slow with that sun glare on the eastbound side from this point at 322 on into 113. still have some 20 minute delays on septa's west trenton regional rail line on inbound trains because of equipment problems. but the norristown high speedline and the patco high speedline both back to normal. delays on those lines have subsided. karen. >> we were tracking a shower that just kind of broke up as it headed towards our region. maybe you see a drizzle