| Both products are of premium quality. The difference is their strength- 1000mg and 500mg. The usage depends on your personal requirement- whether you need a higher or lower dosage of strength. And both can be for internal and external use. |
| Both are high quality products. And they are suitable for external use. The one from Country Life is a smaller package. The strength is also lower(500mg per softgel). It is suitable for trial purpose. If you find it useful then you may choose the one from Natural Factors which is relatively cheaper. |