The 2nd Gift from the silkworm and the Miracle it Delivers

Serrapeptase Cost Comparison of Brands per 80,000iu activity dose (see explanation below). Price comparison per dose is the only measure of value.

Please note that I have used the retail prices for comparison and all the various suppliers will have special offers. Special offers will generally be matched by each supplier, but this will not change the comparison table below to a great extent.

  Retail Prices Cost per
Available 80,000iu
Additional Beneficial Ingredients 5 Star Value
SerraEzyme 80,000IU 0.33c None ♦ ♦ ♦ ♦ ♦
SerraPlus+ 80,000IU 0.52c 350mg MSM + 50mg of 73 Trace Minerals ♦ ♦ ♦ ♦ ♦
Doctor’s Best 0.50 None ♦ ♦ ♦ ♦ ♦
Serradrene 0.50 None ♦ ♦ ♦ ♦ ♦
Solaray 0.73c None ♦ ♦ ♦ ♦ ♦
Source Naturals
1.10c None ♦ ♦ ♦ ♦
Physician’s Formula
1.20c None ♦ ♦ ♦ ♦
Smart Nutrition 1.2    

None ♦ ♦ ♦ ♦
Enerex1.50cNone♦ ♦ ♦ ♦
Serracel™1.50None♦ ♦ ♦ ♦


To clear the confusion regarding milligram (mg) contents my recommendation is that it is better to ignore them completely and just look at the International Agreed Units of Activity (IU Activity).

If it does not say IU on the bottle then it is not IU’s. You may see U or you may see SU. These are not IU and are considerably less potent than IU. IU has been used for Serrapeptase for over 30 years. U and SU is a new measure designed to confuse buyers much like the phone companies do with their price plans.