Anxiety. Evidence on the effects of 5-HTP for anxiety is unclear. Early research shows that taking 25-150 mg of 5-HTP by mouth daily along with carbidopa seems to reduce anxiety symptoms in people with anxiety disorders. However, other early research shows that taking higher doses of 5-HTP, 225 mg daily or more, seems to make anxiety worse. Also, taking 60 mg of 5-HTP daily through the vein does not reduce anxiety in people with panic disorders.
To evaluate the indirect effect of Tβ4 peptide on RANKL-induced osteoclastogenesis, mouse BMMs were incubated with RANKL and CM, prepared from HPDLCs treated with H2O2 and different concentrations of Tβ4, and allowed to differentiate into osteoclasts. As shown in Fig 6, Tβ4 peptide dose-dependently decreased the number of osteoclasts and TRAP activity. To determine whether the reduction in osteoclast generation by Tβ4 could be due to effects of Tβ4 peptide on viability of the BMMs, a cytotoxicity assay was performed. The viability of BMMs was not significantly affected by Tβ4 peptide (data not shown).
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The RANKL and OPG have been identified as a key regulatory component of alveolar bone loss associated with inflammatory periodontal disease [52]. Moreover, PDLCs were shown to express several osteoclastogenic cytokines, including both OPG and RANKL [30, 31]. Our data demonstrated that Tβ4 peptide abolished H2O2-induced RANKL expression and restored OPG expression. Osteoclasts, bone-resorptive multinucleated cells derived from hematopoietic stem cells, are associated with osteolytic diseases. Furthermore, NFATc1, a master modulator of osteoclastogenesis, regulates target genes, such as cathepsin K and calcitonin receptor or Calcr [53]. In our in vitro study using BMMs, Tβ4 peptide directly and indirectly inhibited RANKL-induced osteoclast differentiation and expression of osteoclast markers, such as cathepsin-K, calcitonin receptor or Calcr, NFATc1, and RANK in BMM cells. These results indicated that Tβ4 was a key therapeutic target in controlling inflammation-induced bone loss.
Oxytocin secreted from the pituitary gland cannot re-enter the brain because of the blood-brain barrier. Instead, the behavioral effects of oxytocin are thought to reflect release from centrally projecting oxytocin neurons, different from those that project to the pituitary gland. Oxytocin receptors are expressed by neurons in many parts of the brain and spinal cord, including the amygdala, ventromedial hypothalamus, septum and brainstem.
Astrocytes constitute the largest population of cells in the central nervous system, constituting approximately 90% of human parenchymal cells. Astrocytes are highly responsive to injury, undergoing rapid hyperplasia and hypertrophy. Astrocytes act as physical and biochemical barriers to axonal regeneration by forming glial scars along ischemic lesions and producing axonal growth-inhibitory proteoglycans. Administration of MSCs significantly attenuates the glial scar in the ischemic boundary and reduces expression of inhibitory proteins, such as Nogo. Analysis of single-cell astrocytes isolated from the ischemic boundary by laser capture microdissection reveals that administration of MSCs dramatically down regulates neurocan, an axonal growth-inhibitory proteoglycan. Coculture of MSCs with astrocytes also substantially reduces neurocan expression in astrocytes activated by oxygen glucose deprivation. These findings suggest that injected MSCs reduce physical and biochemical barriers of astrocytes, which also contribute to axonal and neurite outgrowth.
Thymosin β4 (TMSB4X, Tβ4) is the most abundant G-actin binding peptide of the cytosol and is a potent proangiogenic factor. The role of myocardin-related transcription factors (MRTF) and serum response factor (SRF) for this function was examined in experimentally induced prolonged ischemic myocardium areas of transgenic pigs ubiquitously and constitutively overexpressing Tβ4 driven by the cytomegalovirus promoter. Upon induction of a reversible loss of cardiomyocyte function which is amenable to therapeutic neovascularization, transgenic pigs did not experience a significant loss of perfusion nor myocardial function at rest or under rapid pacing. Functional vascular regeneration by induced capillary growth and maturation was found in the transgenic pigs (Hinkel et al., 2014).
The PDLCs were pre-treated with Wnt5a siRNA (30 nM) or Wnt5 peptide (500 ng/mL) for 2 hours, post-incubated with Tβ4 peptide (1 μg/mL) and 200 μM H2O2 for 48 hours (A-E), and then conditioned medium (CM) was collected. The bar graph shows the fold increase in protein or mRNA expression compared with control. * Statistically significant differences compared with the control, p<0.05. # Statistically significant difference compared with the H2O2-treated group. The data presented were representative of three independent experiments.
Research in the early 1960s showed that in rats, administration of α-MSH caused sexual arousal, and work on this continued in many labs up through the 1980s, when scientists at University of Arizona began attempting to develop α-MSH and analogs as potential sunless tanning agents, and synthesized and tested several analogs, including melanotan-I and melanotan II.[6][9]
Touting their discovery as “a great step forward in weight loss history,” the panel were quick to offer up their hard earned cash to back the entrepreneurial pair. “We were shocked. The most we were hoping for was some advice…we weren’t even sure that we would manage to get any investors,” explained Samantha. After outstanding offers from each panel member, the sisters burst into tears.

I was kind of scared because I ran across some threads that said TB500 leads to cancer or promotion of benign tumors…most of these were at least 4-5 years old though and it seems there are countless logs online all with good experiences. Nonetheless I was still worried so I did some more research and came across a pharmaceutical company in the US doing clinical trials for thymosin beta 4 to help with dry eye syndrome. I have attached some links. This makes me feel much safer but if you have any more insight I’d really appreciate it.

The CCI model we used causes cortical tissue loss. Traditionally, the target for neuroprotective treatment of TBI is to reduce the lesion volume.39,40 A major limitation of neuroprotection strategies is the short time window between injury and treatment. In the vast majority of preclinical TBI studies, the treatment compounds provide neuroprotection only when administered early (usually several hours after brain injury).11 The administration of a compound early in the clinical setting is not practical.41 The neuroprotective effects demonstrated in rodents may diminish if the treatment compounds are given in the clinical setting beyond the short neuroprotective window. We are able to stimulate recovery of neurological function without altering the lesion volume, which has also been demonstrated in our experimental studies of stroke,19,42,43 and is in essence, enhancement of neurorecovery.19 The extended 24-hour window for treatment which improves neurological recovery, without altering CCI cortical volume, is a major benefit of the neurorestorative therapy. Recently, we evaluated the efficacy of delayed Tβ4 treatment on spatial learning and sensorimotor functional recovery in rats after TBI induced by CCI.34 Briefly, TBI rats received Tβ4 at a dose of 6 mg/kg or a vehicle (saline) administered i.p. starting at 24 hours after injury and then every third day for 2 weeks. The dose of Tβ4 was selected based on our previous studies in animal models of stroke and EAE.25,27 Tβ4 did not alter lesion volume (14.2 ± 3.9% for saline treatment vs. 15.7 ± 3.6% for Tβ4 treatment). TBI caused neuronal cell loss in the ipsilateral CA3 and DG examined 35 days after injury compared to sham controls. Tβ4 treatment initiated 24 hours post injury significantly reduced cell loss in these two regions compared to saline controls. Tβ4-treated TBI rats showed significant improvement in spatial learning (MWM test) and sensorimotor (mNSS test) functional recovery compared to the saline-treated TBI rats.34
Supplements haven't been tested for safety and due to the fact that dietary supplements are largely unregulated, the content of some products may differ from what is specified on the product label. Also keep in mind that the safety of supplements in pregnant women, nursing mothers, children, and those with medical conditions or who are taking medications has not been established. You can get tips on using supplements, but if you're considering the use of 5-HTP supplements, talk with your primary care provider first. Self-treating a condition and avoiding or delaying standard care may have serious consequences.

The uterine-contracting properties of the principle that would later be named oxytocin were discovered by British pharmacologist Sir Henry Hallett Dale in 1906,[125][46] and its milk ejection property was described by Ott and Scott in 1910[126] and by Schafer and Mackenzie in 1911.[127] In the 1920s, oxytocin and vasopressin were isolated from pituitary tissue and given their current names. The word oxytocin was coined from the term oxytocic, Greek ὀξύς, oxys, and τοκετός , toketos, meaning "quick birth".
Froemke's study1, published in April, showed that oxytocin temporarily suppresses inhibitory neurons — those that dampen neural activity — which allows excitatory cells to respond more strongly and reliably. “Our hypothesis is that the virgin brain is a blanket of inhibition, and that pairing the pup calls with oxytocin allows the network to be reconfigured,” says Froemke. The hormone may serve to amplify incoming signals and allow them to be recognized as behaviourally important. (It is at least possible, he says, that this same mechanism could explain why some human mothers feel they are uniquely tuned to a baby's cries.)
Do I have to diet? Studies show that 5-HTP enhances weight loss even if you continue eating your normal foods. Without a diet, you stand to lose about a pound a week; many folks eventually drop 15 pounds or more without dieting. Of course, taking 5-HTP to lose weight works by lowering caloric intake — and the more calories you cut, the more you’ll lose. So if you want to maximize results, try tweaking your diet at the two-week mark, when 5-HTP will have fully kicked in, diminishing hunger and carb cravings. Below, we’ve got a version of the diet used in one university study that helped 5-HTP takers lose several times more weight than folks getting a placebo.

Oxytocin production does not exist separately from the evolved neurophysiological mechanisms that regulate gonadotropin releasing hormone (GnRH) pulsatility. There are mammalian pheromones that are known to directly influence the GnRH pulse, for example androstenol. Oxytocin is not considered to be a pheromone by anyone I know who is involved in olfactory research. Sniffing it is simply a delivery method that we now can see might have negative consequences.
It’s a compound that the body needs in order to make serotonin, which is our main “happiness hormone.” Per Dr. Oz, 5-HTP floods the brain with serotonin and helps minimize stress, sadness, anger, and anxiety. “5-HTP targets specific emotions that drive us to overeat,” Dr. Bhatia explains. And as she already mentioned, 5-HTP also reduces physical hunger pangs and emotional cravings. Ideally, the body makes its own 5-HTP from the amino acid tryptophan, found in foods like turkey and bananas. (Why not just eat more turkey or take a tryptophan supplement? If you struggle with mood or weight, it can be a sign that your body has trouble converting tryptophan to 5-HTP.) Besides making it yourself, the only other way to get 5-HTP is from a supplement. One we like is the BRI 5-HTP Supplement ($16 for 120 capules, Amazon).
Skin damage and aging are induced to a large extent by free radicals from the sun and environmental pollutants and from oxidants produced during infection and inflammation. Lipid peroxidation of membranes and increased inflammatory substances, such as thromboxanes and leukotriens, add insult to injury. While skin damage accumulates with age, repair processes slow down. Thus, any boost by a molecule that would reduce free radicals and accelerate molecular events in healing has the potential to hasten skin repair. Tb4 has such healing qualities.
Autism. A 1998 study found significantly lower levels of oxytocin in blood plasma of autistic children.[14] A 2003 study found a decrease in autism spectrum repetitive behaviors when oxytocin was administered intravenously.[15] A 2007 study reported that oxytocin helped autistic adults retain the ability to evaluate the emotional significance of speech intonation.[16]
5-HTP (5-Hydroxytryptophan) is a chemical by-product of the protein building block L-tryptophan. It is also produced commercially from the seeds of an African plant known as Griffonia simplicifolia 5-HTP is used for sleep disorders such as insomnia, depression, anxiety, migraine and tension-type headaches, fibromyalgia, obesity, premenstrual syndrome (PMS), premenstrual dysphoric disorder (PMDD), attention deficit-hyperactivity disorder (ADHD), seizure disorder, and Parkinson's disease..