it should be helpful. Cilantro is a known chelator but it can have side effects if your levels are high. A headache and even fatigue can be a sign of detox. If it is too much for you then you should try taking it in small amounts or get off of it. But if you're fine now then stay on it..some things work for some and dont work for others..i take a little bit of cilantro myself and it doesnt make me feel that bad..hope this helps and good luck