Hey Adrian, thanks for reaching out. Firstly, I am not a doctor and nothing I say should be taken as medical advice. For something like this I suggest you book a consult at
The following medications and other supplements may interact with 5-HTP. Effects may include increasing or decreasing sleepiness and drowsiness, interfering with the effectiveness of the medications or supplements, and interfering with the condition that is being treated by the medication or supplement. These are lists of commonly used medications and supplements that have scientifically identified interactions with 5-HTP. People who take these or any other medications and supplements should consult with a physician before beginning to use 5-HTP.
Provide a record of any correspondence between ASADA staff and the World Anti-Doping Authority containing the keywords:  "Thymosin", "Thymosin Beta 4", "TB-500", "TB500", "TB4" or "Thymomodulin" between June 2011 and September 2013. Provide audit logs showing the date upon which Thymosin Beta 4 was published as a banned substance on the check your substances website. Provide a log of all receipts (provided online or by telephone) given to athletes in response to requests containing the keywords "Thymosin", "Thymosin Beta 4", "TB-500", "TB500", "TB4" or "Thymomodulin" between June 2011 and September 2013.
There is a possibility Melanotan may some day present a viable solution to achieving a “healthy tan” in line with current western beauty ideals. But it also creates new forms of risk concerning needle safety, unsettling patient-practitioner relationships via unregulated use, and the subversion of public health messages that groups such as Cancer Council Australia have worked for decades to promote.
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.
It has been reported that deficiencies in the amino acid tryptophan (precursor to 5-HTP) are correlated with depression, as evidence by serum tryptophan in depressed persons.[16][17] Decreased levels of tryptophan in the body can come from various means but are most likely caused by a diet lacking in the amino acid as substrate, or by upregulation of enzymes (most notably indoleamine 2,3-dioxygenase(IDO) and tryptophan 2,3-dioxygenase(TDO)) that degrade tryptophan or direct it to paths that are not serotonin synthesis causing a relative deficiency.[18][19] These enzymes can be upregulated in states of chronic inflammation[18][20] and injection of some pro-inflammatory cytokines has been implicated in depression[21] and increasing the kyurenine:tryptophan ratio, which is indicative of IDO activity being increased.[22] The activity of tryptophan hydroxylase can also be further downregulated in cases of Magnesium or vitamin B6 deficiency, stress, or excessive tryptophan levels.[7]

Thymosin beta(4), a small ubiquitous protein containing 43 aa, has structure/function activity via its actin-binding domain and numerous biological affects on cells. Since it is the major actin-sequestering molecule in eukaryotic cells and is found essentially in all cells and body fluids, thymosin beta(4) has the potential for significant roles in tissue development, maintenance, repair, and pathology. Several active sites with unique functions have been identified, including the amino-terminal site containing 4 aa (Ac-SDKP) that generally blocks inflammation and reduces fibrosis. Another active site at the amino terminus contains 15 aa, including Ac-SDKP, and promotes cell survival and blocks apoptosis, while a short sequence containing LKKTETQ, the central actin-binding domain (aa 17-23) plus 1 additional amino acid (Q), promotes angiogenesis, wound healing, and cell migration. Several additional biological activities have been identified but not yet localized in the molecule, including its antimicrobial activity, the induction of various genes (including laminin-5, MMPs, TGF beta, zyxin, terminal deoxynucleotidyl transferase, and angiogenesis-related proteins), and the ability to activate ILK/PINCH/Akt, and other signaling molecules important in both apoptosis and inflammatory pathways. This review details these important physiologically and pathologically active sites and their potential therapeutic uses.
20 patients (nine from the 5-HTP group and 11 from the Placebo group) completed the study. Brain tryptophan availability in diabetic patients was significantly reduced when compared to a group of healthy controls. Patients receiving 5-HTP significantly decreased their daily energy intake, by reducing carbohydrate and fat intake, and reduced their body weight.”
An estimated 1.4 million people sustain traumatic brain injury (TBI) each year in the United States, and more than 5 million people are coping with disabilities from TBI at an annual cost of more than $56 billion.1 There are no commercially-available pharmacological treatment options available for TBI because all clinical trial strategies have failed.2,3 The disappointing clinical trial results may be due to variability in treatment approaches and heterogeneity of the population of TBI patients.4-9 Another important aspect is that most clinical trial strategies have used drugs that target a single pathophysiological mechanism, although many mechanisms are involved in secondary injury after TBI.4 Neuroprotection approaches have historically been dominated by targeting neuron-based injury mechanisms as the primary or even exclusive focus of the neuroprotective strategy.3 In the vast majority of preclinical studies, the treatment compounds are administered early and, frequently, even before TBI.10,11 Clinically, the administration of a compound early may be problematic because of the difficulty in obtaining informed consent.12

An estimated 1.4 million people sustain traumatic brain injury (TBI) each year in the United States, and more than 5 million people are coping with disabilities from TBI at an annual cost of more than $56 billion.1 There are no commercially-available pharmacological treatment options available for TBI because all clinical trial strategies have failed.2,3 The disappointing clinical trial results may be due to variability in treatment approaches and heterogeneity of the population of TBI patients.4-9 Another important aspect is that most clinical trial strategies have used drugs that target a single pathophysiological mechanism, although many mechanisms are involved in secondary injury after TBI.4 Neuroprotection approaches have historically been dominated by targeting neuron-based injury mechanisms as the primary or even exclusive focus of the neuroprotective strategy.3 In the vast majority of preclinical studies, the treatment compounds are administered early and, frequently, even before TBI.10,11 Clinically, the administration of a compound early may be problematic because of the difficulty in obtaining informed consent.12
At least one study has actively differentiated between 'an increase in satiety' (sensation of fullness from food) and a 'decrease in appetite' (less desire to eat) and noted that 5-HTP causes an increase in satiety without a concomitant decrease in appetite.[9] Additionally, most studies are in exclusively females which may have more significance with interventions pertaining to serotonin metabolism; only one study mentioned above was conducted in men as well[10] but appears to suggest that it benefits both genders.

A user knowing their skin type in relation to the Fitzpatrick scale is important because it will dictate dosing needs. It should be noted that those who will benefit the most from this product are those in the upper spectrum of the Fitzpatrick scale (Types 1, 2 and 3 especially). Skin type 1 and 2 users will typically take longer to see any results from this product, however once beautiful tan is obtained maintenance is easy.


A: 5-HTP (5-hydroxy-tryptophan) 5-htp-5-hydroxytryptophan is converted to serotonin in the body. Because 5-HTP is related to serotonin, it should not be taken with drugs, which may affect serotonin level. These drugs are SSRI (selective serotonin reuptake inhibitors) such as Paxil (paroxetine), Zoloft (sertraline), Prozac (fluoxetine), Celexa (citalopram) and others. The list of drugs: Plavix (clopidogrel), Lipitor (atorvastatin), Uroxatral (alfuzosin), bisoprolol, aspirin and lisinopril do not affect serotonin in the body. Tramadol, however, has a weak inhibition of serotonin reuptake and can increase serotonin levels. It is therefore recommended that tramadol and 5-HTP be used with caution. The patient needs to be monitored for serotonin syndrome, which may include changes in mental status, tremor, hyperthermia, rigidity, seizure, increase sweating and shaky movement. The interaction may also cause a cerebral vasoconstrictive disorder such as Call-Fleming syndrome. It is important to discuss the use of tramadol and 5-HTP with your healthcare provider before taking 5-HTP. Lori Mendoza, RPh
Hi Ben. Have a groin problem which I have had for years and it just won’t go away it’s not a hernia or osteitis pubis I had an MRI and the specialist said they wouldn’t operate. I can still play sport but I’m just less agile and slower than normal and it takes a few days for the groin pain to go away after sport. Would tb500 help to heal it or would bpc157 or something else be better? Thanks :)

Maintenance doses are taken once the desired pigmentation has been reached and requires much less frequent dosing. Unfortunately, this is where too many variables come into play to give exact instructions. Skin type, bodyweight, metabolism regulating speed of skin fading, uv ray exposure, preferred tan level – all that makes impossible to give correct advice on maintenance dose. Everyone will find their own perfect dose and dosing frequency through some trial and error. To not leave you completely disinformed on this subject here is example of loading and maintenance which can be used as starting point where to adjust from:
Oxytocin is a versatile actor, whose resume includes all sorts of jobs in sex, reproduction, social behaviour and emotions.  It can increase trust among people and make them more cooperative (this works in meerkats, too). It can increase the social skills of autistic people. It’s released during orgasm. It affects lactating breasts, contracting wombs and the behaviour of sheep mothers towards their newly born lambs. The list goes on: drug addiction, generosity, depression, empathy, learning, memory.
5-HTP, along with other L-Tryptophan supplements, have been implicated in the flu-like, potentially fatal Eosinophilic Myalgia Syndrome. This syndrome was initially tied to  impurities - Amino Acids called "Peak E" and "Peak X" - which were present in these products because of poor manufacturing processes by a single major supplier. Some people reject this idea and believe that the syndrome is caused by an excess of tryptophan itself (10, 11).
5-HTP works in the brain and central nervous system by increasing the production of the chemical serotonin. Serotonin can affect sleep, appetite, temperature, sexual behavior, and pain sensation. Since 5-HTP increases the synthesis of serotonin, it is used for several diseases where serotonin is believed to play an important role including depression, insomnia, obesity, and many other conditions.