If your takeing quality methryl coblamin liquid sublingual u should be good, im sending u a link for a two pack if u need a one pack its on there somewere ull find it. Save money with the two pack.https://www.amazon.com/Organic-Vitamin-B12-L-Methylfolate-Sublingual/dp/B0BT2SRXZ3/ref=pd_aw_ci_mcx_mh_mcx_views_0?pd_rd_w=ZiEZK&content-id=amzn1.sym.07081e2a-c82a-4414-ba67-d1ea4791ec44&pf_rd_p=07081e2a-c82a-4414-ba67-d1ea4791ec44&pf_rd_r=RXF2Y9DQ97VV611K1ZWK&pd_rd_wg=rrUQL&pd_rd_r=a00ae712-cca8-4e40-9bf4-2f8108c6a155&pd_rd_i=B0BT2SRXZ3