I started out with 15 drops of the Nutribiotics GSE put into a gelatin capsule. I think the size of my capsules were "O". I quickly worked my way up to 20 drops 2X per day. However i'm a 175LB male so my dosing may be higher than a lower weight female. I never went higher than 20 but think one could easily do more. I did a higher dose from the get-go because this was following 2 years of aggressive abx treatment so there wasn't much bacteria left at the time.
You can get away with putting drops 2-3 drops in water but it will be the most disgusting bitter drink ever if you try to put 15 drops in water or OJ.
Go to the following link if you want to purchase some gelatin capsules. They have regular or flavored gel caps.