In the past only the 1fl is available here and is too small for me so I emailed the sales department to get me this 4fl oz size cilantro tincture and they got it for me. Thank You iHerb. For the product: First if your allergic to alcohol then be careful with this. It is important to mix it with small amount of HOT water because Cilantro contains a mildly toxic compound, which is neutralized when placed in a small amount of hot water before ingesting. Take it 30 minutes after taking Chlorella, go all out and start with 30-40 drops 4 times a day in 2 weeks with a high quality chlorella (Pyrenoidosa). Before starting the detox take MSM powder 3x a day for a month for initialization readying your body and continue along with the detox. After 3 months; if your mercury poisoned you'll notice that your B12 intolerance's will be immediately alleviated then you can start off with your hydroxy or methyl b12's (cobalamin) supplements. Go Blitzkrieg and eradicate/obliterate all that nasty accumulated heavy metals in your body. Be Shocked and Awed!