However, the Food and Drug Administration and its equivalents in other countries have issued repeated advisory notices about Melanotan II, urging consumers to stop using and purchasing this unapproved product. David Carter of the United Kingdom's Medicines and Healthcare Products Regulatory Agency was unequivocal in his denunciation, warning would-be buyers against being "fooled into thinking that Melanotan offers a shortcut to a more even tan." Liverpool John Moores University researcher Michael Evans-Brown cautioned that the peptide may be linked to dyspepsia and various cardiovascular problems, such as increases in blood pressure, while others have noted it appears to stimulate the growth of moles on the body.
5-HTP has been investigated for its role in hot flashes as Selective Serotonin Reuptake Inhibitors (SSRIs) have been noted to reduce the occurrence of hot flashes and menopausal symptoms.[30][31] In a study in menopausal females given 150mg 5-HTP daily (50mg taken thrice a day) for a period of one week failed to quantitivatively reduce the occurrance of hot flashes[32] as assessed by a Flashmark Pro recording device.[33]
When we asked a group of readers to test out 5-HTP to lose weight, they ate unlimited portions of healthy food and still shed up to five pounds in a week. We also talked to women who’d been using 5-HTP long term. Heather Miars started taking 5-HTP for her mood at Dr. Bhatia’s urging. “I was finally able to go off prescription antidepressants and lose 15 pounds!” recalls the 45-year-old mom. Meanwhile, Audra Holmes tried 5-HTP after developing “mood swings so wild, I was giving people whiplash,” she jokes. On 5-HTP, she says: “I didn’t have the highs and lows. I could suddenly get through the day without naps or comfort food!” She shed 50 pounds in 16 weeks. Wish you could have the same kind of success with an easy way to lose weight? As Dr. Oz put it: “5-HTP may be your pre-meal must-have!”
Bonding. In the Prairie Vole, oxytocin released into the brain of the female during sexual activity is important for forming a monogamous pair bond with her sexual partner. Vasopressin appears to have a similar effect in males. In people, plasma concentrations of oxytocin have been reported to be higher amongst people who claim to be falling in love. Oxytocin has a role in social behaviors in many species, and so it seems likely that it has similar roles in humans.6

Toxicity effects of melanotan II from therapeutic and overdose exposures include renal dysfunction, rhabdomyolysis, sympathomimetic overdrive, change in size and pigmentation of pre-existing moles, rapid increase in the number of new moles, associated with causing melanomas, posterior reversible encephalopathy syndrome, refractory priapism, stretching and yawning syndrome, shortness of breath, chest pain, abdominal cramping and pain, dizziness and lethargy.
Horvath, G. A., Stockler-Ipsiroglu, S. G., Salvarinova-Zivkovic, R., Lillquist, Y. P., Connolly, M., Hyland, K., Blau, N., Rupar, T., and Waters, P. J. Autosomal recessive GTP cyclohydrolase I deficiency without hyperphenylalaninemia: evidence of a phenotypic continuum between dominant and recessive forms. Mol.Genet.Metab 2008;94:127-131. View abstract.

Like I said, it’s amazing stuff. And it shouldn’t come as a surprise that it affects that amazing part of your brain so intimately involved in keeping you safe…the amygdala. Remember, trust has a lot to do with survival among social animals who depend on each other for safety and protection. Show someone an untrustworthy face, and the amygdala is one of two areas that become more active than anywhere else in the brain.7 It is apparently programmed for reading trust just as it is for snakes or spiders.

“The study is kind of a high-water mark for the field, putting different levels all together: a robust behaviour, a brain region, and a cellular basis for it,” says Richard Tsien, a neuroscientist also at Langone. Tsien has been studying the action of oxytocin on neuronal circuits in detail, by examining slices of the hippocampus, a region involved in learning and memory. In a 2013 study6 of rats, Tsien's team found that oxytocin selectively acts on a type of cell called an inhibitory interneuron in a way that quiets background chatter within the neuronal circuit. “Oxytocin improved signal transmission, almost doubling the ability of information to flow through the system,” Tsien says. In effect, it is producing more signal and less noise.
It should be noted that, anecdotally, 5-HTP is said to reduce cravings for carbohydrates in particular. The serotonergic (related to serotonin) system plays a role in macronutrient selection particular in obese persons with a craving for carbohydrates[13] and enhancing serotonergic transmission is known to reduce these cravings.[14] Beyond this, depressed serotonergic tranmission (hypothalamus) is also implicated in increased eating and reduced satiety in general.[15]
I’ve been on this stuff for lots of years. I really needed it when I was depressed like hell, and I had an emotional pain that simply didn’t go away for 2 decades prior to starting that stack. Did it help? yes. Was it the best intervention possible? probably not. I was able to get off all this stuff with the uridine stack, and I believe it partly fixed a part of my brain that was damaged from this decade long suffering. So this is, why I am now more into brain regeneration and psychotherapeutic interventions (even though I do them myself), and I would only go back to this stack if I was completely fucked up again. There are a lot of side effects, and its a fine line to balance the supplements, to get rid of the side effects…
The N-terminal half of β-thymosins bears a strong similarity in amino acid sequence to a very widely distributed sequence module, the WH2 module. (Wasp Homology Domain 2 - the name is derived from Wiskott-Aldrich syndrome protein).[11][12] Evidence from X-ray crystallography shows that this part of β-thymosins binds to actin in a near-identical manner to that of WH2 modules, both adopting as they bind, a conformation which has been referred to as the β-thymosin/WH2 fold. β-thymosins may therefore have evolved by addition of novel C-terminal sequence to an ancestral WH2 module.[13] However, sequence similarity searches designed to identify present-day WH2 domains[14] fail to recognise β-thymosins, (and vice versa) and the sequence and functional similarities may result from convergent evolution.[15]
5-HTP is necessary for the proper functioning of your body. It is decarboxylated in the brain and liver to produce serotonin, a neurotransmitter. Serotonin is involved in the communication between nearly all of our 40 million brain cells, and is also found in large quantities in the cells of the gut, and in blood platelets. Because of its widespread distribution through the cells of the body, Serotonin is believed to have a large number of psychological and physiological effects. It has been used to treat conditions as diverse as obesity, depression, fibromyalgia, insomnia, and headaches, with varying success.
Jump up ^ Rondanelli M, Opizzi A, Faliva M, Bucci M, Perna S (March 2012). "Relationship between the absorption of 5-hydroxytryptophan from an integrated diet, by means of Griffonia simplicifolia extract, and the effect on satiety in overweight females after oral spray administration". Eating and Weight Disorders. 17 (1): e22–8. doi:10.3275/8165. PMID 22142813.