Here are a few helpful pointers that may be of use to you, gleaned from many sources.

Suggested Dose (Internal use) (http://www.silvermedicine.org)

1 Teaspoon                 5ml                  Daily Nutritional dose

1 Tablespoon  15-30ml           Therapeutic dose

There are no known cases of Argyria caused by properly made electro-colloidal silver (despite stories you may have read), as Argyria seems only to be caused by silver nitrate solutions.

External Treatment

Topical use - Rashes, burns, gashes & wounds, skin conditions, thrush etc. Apply Colloidal Silver on to the affected area twice daily. Use a compress or spray applicator.

Nasal Irrigation - Nasal problems, Sinuses, Colds etc.

Irrigating your nasal passages with Colloidal Silver can be very effective. I have used a nasal spray applicator (bought in chemist, thoroughly washed out original contents then filled with CS), sniff up each nostril, 3 or 4 times a day. Continue the      irrigation for three days after the symptoms have been alleviated to ensure all pathogens have been eliminated.

Conditions—Various conditions that have been helped by CS though I cannot prove their effectiveness myself:

Acne Allergies Appendicitis Arthritis Blood parasites Burns (colloidal silver is one of the few treatments that can keep severe burn patients alive) Cholera Conjunctivitis Diabetes Hay fever  Herpes Leprosy Leukaemia Lupus Lymphagitis Lyme disease MalariaMeningitis Parasitic infections both viral and fungal Pneumonia Rheumatism Ringworm Scarlet fever Sinus infectionsSeptic conditions of the eyes, ears, mouth and throat  Shingles Skin cancer Staph or Strep infections Toxaemia Trench foot All forms of viruses Warts Stomach ulcers.

In addition it also has veterinary uses, such as for canine parvo-virus. It can be used for pet’s drinking water (but not in fish tank).

You'll also find Colloidal Silver very handy in the garden since it can be used against bacterial, fungal and viral attacks on plants. Simply spray diluted Colloidal Silver on the leaves, and add to soil water.

“As an antibiotic, Silver kills over 650 disease causing organisms; resistant strains fail to develop. Silver is absolutely non-toxic. Silver is the best all-around germ fighter we have. Doctors are reporting that, taken internally, it works against syphilis, cholera, and malaria, diabetes and severe burns.- Bio/Tech News, 1995”

Herxheimer effect

“The often talked about Herxheimer effect is not a toxic response to silver. In actuality, a Herxheimer effect will often trigger a toxic response, but not to the silver itself, rather, to infections being rapidly eliminated within the body and the subsequent change in the biological terrain. The difference is important, especially if one is attempting to treat a chronic condition with larger doses of colloidal silver. “ “For those using colloidal silver experimentally in an attempt to treat very severe and chronic conditions, the operative idea is to reach a level of saturation, then maintain a dose JUST below this saturation point. Occasionally, it is a good idea to adjust tolerance by increasing the dosage level again until this saturation level is reached. Again, this is mentioned for those who are involved in the experimental use of colloidal silver.”

http://www.silvermedicine.org/silveruse2.html

Side effects. 

Occasionally (in the first few days) you may experience an upset stomach. Taking any natural yoghurt product can alleviate this condition. It has also been suggested that 30 seconds of gargling/swishing of your daily dose is best before swallowing, to help absorption.

Some Testimonials can be found here:

Colloidal Silver Testimonials - Ionic | Oligodynamic | Silver Hydrosol

Colloidal Silver Testimonials