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Natural Factors, BioSil, ch-OSA Advanced Collagen Generator, 0.5 fl oz (15 ml)

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Natural Factors, BioSil, ch-OSA Advanced Collagen Generator, 0.5 fl oz (15 ml)

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Natural Factors, BioSil, ch-OSA Advanced Collagen Generator, 0.5 fl oz (15 ml)

In Stock
0.5 fl oz
1 fl oz
0.5 fl oz
  • Expiration Date: August 2021
  • Shipping Weight:
    0.12 lbs
    Switch to Metric units
  • Product Code: NFS-39185
  • UPC Code: 5425010391859
  • Package Quantity: 0.5 fl oz
  • Dimensions:
    1.4 x 2.2 x 3.5 in, 0.1 lbs
    Switch to Metric units

Product Rank:

#5 in BioSil >
Frequently Purchased Together
Product Overview


  • Beauty · Bones · Joints
  • Reduces Fine Lines and Wrinkles
  • Thickens and Strengthens Hair
  • Strengthens Nails
  • Promotes Strong and Flexible Bones
  • Promotes Healthy Joints
  • Original ch-OSA Formula
  • Clinically Tested · US Patent #5,922,360 and Other Patents Pending
  • Dietary Supplement
  • Vegetarian

The Breakthrough in Collagen!

Collagen is essential for beautiful skin, hair and nails as well as healthy bones and joints. But starting at age 21, collagen diminishes 1% per year. By age 30, the signs become visible. For years, scientists searched for a method to give the human body the ability to regenerate its own collagen. But it took BioSil's landmark discovery of ch-OSA to make it a reality. Its capacity to generate collagen with your own DNA fingerprint makes ch-OSA the genuine breakthrough in collagen.

Suggested Use

For Skin, Hair, Nails and Joints: Take 5 drops, 2 times per day. Mix in with a 1/4 cup of liquid (preferably juice) and drink immediately.
For Bones: Take 6 drops, 1 time per day. Mix in with a 1/4 cup of liquid (preferably juice) and drink immediately.

Clinical Facts
Choline-Stabilized Orthosilicic Acid (ch-OSA)
  Clinically Proven Dosage
Clinically Proven for Skin 5 drops, 2 times daily
Clinically Proven for Hair 5 drops, 2 times daily
Clinically Proven for Nails 5 drops, 2 times daily
Clinically Proven for Bones 6 drops, 1 time daily
ch-OSA has been tested in rigorous double-blind placebo controlled clinical trials for both efficacy and safety. The results are published in peer reviewed medical journals (see insert for details).

Other Ingredients

Glycerol, purified water.

This product does not contain soy, dairy, egg, corn, wheat, gluten, fish/shellfish, nuts/tree nuts.


Consult your healthcare professional prior to use if you have or suspect a medical condition, are taking prescription drugs, or are pregnant or lactating.

Keep out of the reach of children. Store at 59-86°F (15-30°C). Protect from light and moisture.

Supplement Facts
Serving Size: 5 drops (about 0.25 ml)
Servings Per Container: about 60
  Amount Per Serving %DV
Silicon (as Choline-Stabilized Orthosilicic Acid (ch-OSA) 5 mg *
Choline (as ch-OSA) 100 mg *
*Daily Value (DV) not established
iHerb Customer Reviews

it is working

Posted by iHerb Customer on July 19 2017 | Verified Purchase

I tried powder, pills, but this one is working best, I can feel and see that the skin is improving, and my joints do not ache before rain any more. Using already second bottle wll order more

Thanks for your feedback!

Buy the pills

Posted by iHerb Customer on December 7 2016 | Verified Purchase

This stuff takes absolutely foul. Imagine the smell of the monkey house at a zoo, but in liquid form. I like the product but seriously, buy the pills.

Thanks for your feedback!


Posted by Mersila on January 9 2016 | Verified Purchase

i think it takes a while to see the effects on skin..but for now i am using it every month ..choline is good for memory too ,so is a good product and easy 2 take

Thanks for your feedback!

Warning: Smell and Taste Horrible

Posted by iHerb Customer on December 30 2015 | Verified Purchase

For several years I have used BioSil without any problems, and I purchased the Advanced Collagen Generator by error. The first time I added five drops to a liquid to drink it the taste gagged me, and the smell was ghastly. I could not figure out why the smell lingered, and I discovered the liquid is greasy, which caused it to stick to the cup I had put the five drops in, then the greasy film stuck to the kitchen sponge I'd used to wash the cup with. After running the cup and the sponge through the dish washer the terrible smell was finally gone. From then on I used a disposable cup for the five drops and followed choking down the liquid with something naturally sweet, such as a date, then a cup of liquid to get the taste out of my mouth. I continued doing that for about a month, which I figured was long enough to see results from the product. I cannot determine that the Advanced Collagen Generator did anything at all beyond make me feel bad, and that, combined with the horrible taste and smell is why I have given a one star rating. I am fully aware that everyone absorbs and reacts differently to everything, and my experience is exactly that - mine. However, I do think that the smell is offensive and the greasy quality of the liquid combined with the ghastly taste is worth my time warning others about.

Thanks for your feedback!

Good product

Posted by iHerb Customer on April 11 2014 | Verified Purchase

Could see the effect on my skin and hair, also on the joints - did not get rid of the 'clicks', but never got any pain during the period of intake. The taste is easily removed if taken with juice.

Thanks for your feedback!