Raw Powders™ offers pure F-Phenibut powder with no additives!What is F-Phenibut?F-Phenibut (also known as Fluorophenibut, and Fluorobut) is a central nervous system depressant and closely related structural analog of phenibut. F-Phenibut possesses an effect profile similar to phenibut but with a faster onset, significantly increased potency, and shorter total duration. It has recently become available through online research chemical vendors, although little is known about this substance, particularly its potential toxicity and addiction potential.Why F-Phenibut?Phenibut is just a modified version of the naturally occurring GABA neurotransmitter; their chemical structures are virtually identical except for an additional phenyl side group in Phenibut. Once it interacts with the central nervous system, it is believed to help lower levels of over-excitement within the brain.WARNING:If you are pregnant or lactating, consult a health care professional before using this product. KEEP OUT OF REACH OF CHILDREN. Do not exceed suggested intake. Do not re-dose within 4 hours of the same day. Do not mix with alcohol or sedatives. Those taking monoamine oxidase inhibitors should consult with their physician before taking this product. There is a risk of withdrawal symptoms if overused. Daily use can lead to tolerance. Take daily dosage up to twice a week or cycle with long periods of not taking. Store in a cool, dry place. Do not use this product if the safety seal on the bottle is broken.