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They are not interchangeable by default

Nature Communications , 4 , 2516

Intracellular sources of ROS/H2O2 in health and neurodegeneration: spotlight on endoplasmic reticulum

Capeau J, Magr J, Caron-Debarle M, Lagathu C, Antoine B, Brziat VR, et al

Flashes of very hot or cold temperature Changes to appetite and/or weight Dizziness Fatigue Headaches BPC 157 dangers (is it actually safe?) BPC-157 is considered safe for use

However, it can sometimes be more effective when the pituitary gland is not responding to clomiphene, and is generally able to raise testosterone levels higher than can anastrazole (as long as baseline LH levels are not elevated above 20 IU/L)