Other compounds

Colloidal silver

Also called: silver

Tiny silver particles in liquid.

Why people take it
Infections, immunity.
What the evidence says
No proven benefit by mouth.
How it is usually taken
Not recommended by mouth.
Be careful
Can permanently turn skin blue-grey (argyria); interferes with some antibiotics. Avoid.
Medicines it can interact with
Reduces absorption of quinolone and tetracycline antibiotics and levothyroxine.

Other other compounds

Alpha-lipoic acidResveratrolQuercetinPterostilbeneNMNSpermidineFisetinPQQSulforaphaneDIMDHEAMelatoninCaffeine and L-theanineCannabidiol (CBD)Hemp seedBee pollenRoyal jellyPropolisManuka honeyChlorophyll

Common questions

What is Colloidal silver?

Tiny silver particles in liquid.

Why do people take Colloidal silver?

Infections, immunity.

Does Colloidal silver work?

No proven benefit by mouth.

How much Colloidal silver do people take?

Not recommended by mouth.

Is Colloidal silver safe?

Can permanently turn skin blue-grey (argyria); interferes with some antibiotics. Avoid.

Does Colloidal silver interact with medicines?

Reduces absorption of quinolone and tetracycline antibiotics and levothyroxine.

Sources and further reading

Last reviewed 31 October 2026. Written by Satya Babu.

🔎 Search all supplements

For information only, not medical advice. Supplements are not medicines: they are not tested and approved like drugs before they are sold, and they can interact with medicines. Talk to your doctor or pharmacist before you start one, especially if you are pregnant or breastfeeding, take regular medicines, or have kidney, liver or heart disease.