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tylenol depletes the body of glutathione A 48-hour fast can turn standard Paracetamol into acute liver failure. Fasting Glutathione, leaving liver defenseless against toxic NAPQI. Review the latest guidelines on BMJ Best Practice: https://bestpractice.bmj.com/topics/en-us/1010 Data summary: IL-4 regulates glutathione
Description
The rats received pentadecapeptide BPC 157 (0.16 g/ml) or nothing in the drinking water (12.0 ml/rat) until the sacrifice or once daily, intraperitoneally BPC 157 10.0 g/kg, 10.0 ng/kg, or saline (5.0 ml/kg b.w.)

Its recommended to start with a lower dose and gradually adjust based on your needs and response, always under the guidance of a healthcare provider to determine your starting point
doi: 10.1111/bph.15710 191
This is because exposure to heat or direct sunlight can reduce the efficacy of the bacteriostatic preservative

Rao, N., Lee, Y
Though this is speculative rather than evidence-based
