What's the difference between Citricidal® and NutriBiotic Grapefruit Seed Extract?
Citricidal® is the strongest form of Grapefruit Seed Extract you can buy on the market. There is no such thing as just the Grapefruit Seed Extract compounds by themselves. There must be a concentration. Therefore, in a sense, Citricidal® is the purest form of Grapefruit Seed Extract out there. This has a concentration of 60:40 Grapefruit Compound: Glycerin.

The Nutribiotic Grapefruit seed extract is made up of the pure Grapefruit Seed Extract called Citricidal®. 1/3 parts of the Nutribiotic Grapefruit extract is Citricidal® and 2/3 parts glycerin. Therefore, for every three drops of Nutribiotic you have the strength of one drop of Citricidal®.

Does Grapefruit Seed Extract damage the good intestinal flora?
When taken in normal doses Grapefruit Seed Extract does not affect the friendly bacteria of the intestines.

From the book "The Authoritative Guide to Grapefruit Seed Extract" by Allan Sachs, D.C. C.C.N:

"While massive doses of Grapefruit Seed Extract are likely to compromise beneficial flora such as Lactobacillus and Bifidobacterium residing in the digestive and urogenital tracts, typically recommended doses of GSE do not appear to have this effect. Grapefruit Seed Extract may actually assist the growth of the beneficial bacteria by inhibiting pathogenic microbes which compete with the beneficial flora."

From another book about Grapefruit Seed Extract called "The Healing Power of Grapefruit Seed" by Shalila Sharamon and Bodo J. Baginski:

"Initial research indicates that grapefruit seed extract, taken in a normal dose, doesn't touch the important Bifidobacteria and only insignificantly reduces the Lactobacilli, despite its inhibiting effect on harmful intestinal bacteria."

Can germs become resistant to Grapefruit Seed Extract as they can to antibiotics?
There is no evidence that any type of micro-organism has ever developed a resistance to Citricidal® or Nutribiotic grapefruit extracts. In fact it is believed that such resistance is not possible because of Grapefruit Seed Extract's mode of activity. Because Grapefruit Seed Extract actually disrupts the cytoplasmic membrane, changes in genetic make-up in the pathogenic organism would be irrelevant. What is still not known is how Grapefruit Seed Extract can be effective against viruses, inasmuch as a virus has no cell membrane of its own.

How long can I safely take grapefruit extract?
Grapefruit seed extract is not like pharmaceutical antibiotics where a set number of days of treatment is specified. You can safely take Grapefruit Seed Extract over a long period, if needed, without any worry of toxicity. We have reports of people taking Grapefruit Seed Extract every day for years (as a preventative) without side-effects of any kind. Also, a long-standing parasite infection could take quite some time to overcome.

I'm taking medication for high blood-pressure. Will Grapefruit Seed Extract interfere?
There are no reports of any drug interactions or contraindications of any kind. There is a danger in drinking fresh grapefruit juice or eating grapefruits when taking certain medications. Grapefruit Seed Extract contains 0.1% or less of the compounds that increase absorption of certain medications. Always Consult your physician.

Is Grapefruit Seed Extract made from the seeds and pulp of grapefruit?
Grapefruit Seed Extract is actually made from the by-product of expeller extracted grapefruit juice which is dried and ground into a fine powder and further processed.

How much Grapefruit Seed Extract can I take, safely?
10 to 15 drops of NutriBiotic Grapefruit Seed Extract liquid (or 3 to 5 drops of Citricidal®) at a time may be plenty. Nutribiotic now makes a "Maximum Strength" Grapefruit Seed Extract capsule that is the equivalent to 25 drops of liquid. If you want to treat a condition aggressively, increase frequency of treatment up to 5 times per day. Keep in mind that a little bit goes a long way. What's important is to bring the solution into close proximity with the problem. For example, take a small amount internally and gargle when faced with a sore throat. Take internally and douche, if faced with a candida yeast infection. Take internally and apply topically for poison ivy or a fungal infection.

An "Acute Oral-Toxicity Study" was performed in compliance with government standards by an independent lab, and showed that you could consume an enormous amount of pure extract without adverse effects, but we don't recommend it.

How many drops are in a bottle?
There are 2,045 drops per 2 oz. bottle.

Is there anything I can’t use the concentrate for?

We do not recommend using it in your eyes, even in a dilute form . Also, the extract should not be used with any sort of mechanized tooth brush or tooth polisher. The abrasive action of the polisher plus the acidic nature of the extract work together in detriment to your teeth. In fact, if done often enough, it will erode the enamel of your teeth. We also advise users to dilute the extract before use. If you place a drop of the product on your tongue, it will burn. Sensitive skin areas also will end up with an unpleasant irritation if the concentrate is used full-strength.

What is the shelf life of Grapefruit Seed Extract?

The GSE liquid concentrate has been formulated to be effective at full potency for six years. After the expiration date of six years, GSE begins to lose potency.