Is the GNC brand of DHA supplements safe during pregnancy? (mercury is my worry)?

M

Mummy'sBoobyFedBubby

New member
I have just bought 250mg DHA supplements from GNC. But after researching, I am worried whether they are safe. How do I know what they are sourced from? Are they high or low in mercury? The bottle says nothing about mercury levels or taking while pregnant.
Are they safe?
 
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