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In my textbook it is written that gold sol is used for intramuscular injection. But, actually what is its use? Why would people use such a precious element for injection. Can other colloids be used like silver sol?

Note:I posted this question to get a deeper understanding of what is given in my text about the use of gold sol in intramuscular injection. Googling it didn't help.

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Will this help?

Toxicity and cellular uptake of gold nanoparticles: what we have learned so far?

Gold has a long tradition as a disease-modifying antirheumatic drug in the treatment of rheumatoid arthritis and it seems to relieve pain and decreases swelling of the joints.

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  • $\begingroup$ Sir, my question is about gold sol and not nano particles. $\endgroup$
    – Rajath Radhakrishnan
    Commented Jan 13, 2014 at 11:40
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    $\begingroup$ We are not taught anything about intra-molecular injection but,it's given in our chemistry textbook as an application of colloids. $\endgroup$
    – Rajath Radhakrishnan
    Commented Jan 13, 2014 at 11:42
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    $\begingroup$ You might want to read your last comment again. Sometimes our thoughts and our writing take different directions ;) $\endgroup$
    – Klaus-Dieter Warzecha
    Commented Jan 13, 2014 at 15:44
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    $\begingroup$ Gold nanoparticles are sometimes referred to as "colloidal gold" in mining industry, which I think matches the definition of a gold sol closely enough. $\endgroup$
    – chipbuster
    Commented Jan 13, 2014 at 22:11

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