You want to buy Grapefruit-Seed-Extract by NutriBiotic - they are the original developers. I have liquid (very bitter but can be added to citrus juice). I have also used their capsules. Follow directions on bottle. I get mine at the health food store.

For anyone who has allergies get the pills w/echinacea added -- it's great and clears up the sinuses, but if you have nose parasites, that's a different story.

I get mine from Biocare (UK company) but it should be easy to get from a health food store and not expensive like some other products. I keep a permanant supply in the cupboard, both liquid and capsules. I have only ever taken the capsules (just because they are easier to take) but I can only manage I capsule a day or I get die-off.

The drops are brilliant for mixing with water and using for blocked ears (I tried mixing it with olive oil/glycerine and it was too irritating, water was better). I even use it on my dog's ears! It is great stuff for cleaning worktops like incorporated wood chopping boards that you can't move to the sink. Internet search reveals that it has been used in hospitals as it is such a powerful antiseptic/antibacterial/antifungal etc.

It is also great for removing smells when you don't want to use chemicals. I spilt milk in the car and cleaned it with Grapefruit-Seed-Extract - smell went! Also if my dog rolls in muck it's a great way of removing the smell of that too.

The dose on the capsule container says take three a day. I think I would go easy to start with. I have taken it on and off for a couple of years without becoming resistant (brain fog always goes on it) but I notice this time round that I can't stop smoking. This might sound irrelevant but every time I have taken Grapefruit-Seed-Extract in the past I have given up smoking without even trying! The craving just disappears. I have recently taken a double dose of Antibiotics so I expect there is a lot of yeast to contend with. In fact I might try upping the dose!

I should add that it didn't kill Dientamoeba Fragilis, which is what I had, though I expect it reduced numbers

I believe I've read in many of the websites that you would have to take 4000 times the regular dosage to even have a chance of toxicity. I wouldn't go that far but at least it gives some comfort that poisoning is low. I've taken regular dosages three times a day and have had no problems. Good luck.

According to diagnose-me.com, you should use 600 to 1300 mg.

Attached is a protocol designed specifically for using Grapefruit-Seed-Extract to treat candida. I have used it with no adverse effects, but I did not eradicate all of it on this protocol. I was also, not strict enough while on this protocol, as I discovered that I also suffered from gluten-intolerance, and stopped being as strict with my Sugar intake. I am now trying to correct that while I am taking pau d'arco.