Oxygen Elements Plus is an EXCELLENT product to take...a product I highly recommend. On a daily basis I take take 30 drops of OEP, 25 grams of MSM, 1-2 glasses of ozonated water and 2 tablespoons of Chlorella powder. I also take 3 capsules of Oxypowder about twice a week for colon cleansing maintenance. You can use these as guidelines but obviously we are at different stages of health and detoxification so you'll want to adjust the dosages to fit your needs. I will eventually adjust my dosage of MSM down to around 6-9 grams a day.
If you want to try and be "scientific" about the optimum dosages for your body you can try muscle testing each product and do this everyday to find what the best dosage for the day is.
In case you haven't read this, here's some good info about OEP written by Ed McCabe:
By the way, I recently had a meredian stress assessment on a Biomeridian machine and my cellular respiration level came back "excellent!" thanks to the OEP.