Ultrein™ provides all three essential glutathione precursors in their natural form. Because of this it can be used as an optimal natural glutathione supplement. It does not however contain glutathione itself. This is an important distinction.
Glutathione (as an oral supplement) is not effective as a supplement in most forms (1). This is because when taken orally glutathione is broken down in the digestive system. Some of the digested components are poorly absorbed. This means that the body does not ingest sufficient building blocks to form more glutathione in cells of the body. Therefore there is little rise in glutathione production and body concentration. Other synthetic glutathione forms, like liposomal, may be better absorbed. Unfortunately they typically require special handling. Even when absorbed these forms can cause glutathione levels in cells of the body to drop temporarily. This can present concerns in some cases.
Glutathione in raw foods is generally better absorbed than oral glutathione supplements. Unfortunately most foods are typically low in glutathione concentrations. Some foods with higher concentrations of glutathione include asparagus and watermelon. You must eat very large quantities of these foods to make a significant difference. To eat large quantities of these foods one would not be able to eat much else!
Glutathione can be administered by IV as an "IV Push". This is expensive and requires visitation to a doctors office. In addition it can cause unwanted side effects in some cases. Just like oral glutathione supplements, cellular glutathione levels can drop immediately after injection. While this effect is temporary it can still cause concern in some cases.
Nature instead provides foods high in glutathione building blocks. These are called glutathione precursors. In their unprocessed raw natural form, these precursors are readily absorbed across the digestive system. Foods typically high in natural precursors are raw milk and raw meat. Once in the body the raw precursors can be used anywhere in the body to make glutathione! These precursors also have the ability to be stored by the body for later use. Then glutathione can be made as needed. Please note if you cook or process these foods then it will damage the precursors and render them useless.
Synthesized precursors can be taken orally but they have problems too. Some people do not tolerate them. They can sometimes break down into unwanted by-products. They tend to have a short half-life. A short half life means they must be taken frequently and cannot be stored by the body. For example, one common artificial precursor is NAC. It is only one of the three precursors required to make glutathione. NAC has a half-life of about 4 hours. That means you must take it approximately every 4 hours in order to make sure you have sufficient quantities to make glutathione whenever your body needs it. You also must ingest the other two precursors to make sure you have sufficient qualities of all three building blocks when required.
Contrast this with Ultrein™. Ultrein™ has all three glutathione precursors in their natural form. They are readily absorbed. They can be stored in the body for use as needed. Under normal circumstances it does not need to be taken more than once a day. It is convenient and effective!