The active ingredient Feliz S is 4-FMA, 4-fluoroamphetamine. A stimulant-entactogen of the family of the amphetamines that increased in popularity with the new wave of euphoric stimulants in the late 2000’s.
4-FMA binds to and partially blocks the transporter proteins that clear the levels of norepinephrine, dopamine and serotonin in the brain. This action leads to a boost of these neurotransmitters, that accumulate in various regions of the brain resulting in stimulation, euphoria and entactogenic effects.
A lot of users describe the effects of 4-FMA as similar to amphetamines and MDMA. The subjectives effects may vary in intensity from user to user and they are related to the taken amount.
The most described effects include:
- Empathogenic effects (love) especially for the first few hours;
- Stimulation – increased energy that will kick in stronger as the “love” effects fades out;
- Physical euphoria;
- Mood elevation;
- Feelings of warmth and empathy;
- Disinhibition, empathy, affection, social enhancement and excessive talking;
- Bodily control enhancement;
- Stamina enhancement;
- Increased music appreciation;
- Motivation enhancement;
- Ego inflation;
- Thought acceleration;
- Focus and analysis enhancement;
- Increased libido;
- Time distortion;
It takes 20-30 minutes until the effects can start be felt. After 45-60 minutes, the peak is reached. The total length of the experience is around 3 to 6 hours.
The most described side effects of 4-FMA include:
- Increased and irregular heart rate;
- Appetite suppression;
- Pupil dilation;
- Increased body temperature;
- Temporary restless leg syndrome;
- Compulsive redosing.
Note that higher doses will increase the chance and strength of side-effects.
The effects that are felt in the comedown/offset of stimulant are in general negative and uncomfortable. The intensity of the after effects is directly linked to the amount taken and might include:
- Cognitive fatigue
- Depression due to the depletion of the neurotransmitters;
- Motivation suppression;
- Thought deceleration.
Feliz S comes in a 10 ml bottle that will be enough for 2 light doses or 1 strong dose.
Do not use Feliz S if you have a history of heart-related issues or experience severe headache after its use.
Tolerance to 4-FMA might develop with prolonged and repeated use, which might lead to users take increasingly larger doses to achieve the same effects.
4-FMA is considered moderately addictive and has a potential for abuse and psychological dependence in users prone to it.
It is not advise to mix 4-FMA with alcohol, magic mushrooms, other stimulants, opioids, LSD, cannabis, tramadol and MAO-I.