There have been some side effects reported while using Melanotan 2, typically these effects appear during the first few days of dosing and will become increasingly less obvious as the body adjusts to the peptide.
Most users will experience at least some of the side effects to varying degrees, most commonly nausea, appetite suppression, facial flushing and dull headaches.
These will typically become apparent within a few minutes of administration but can last for 1-2 hours. In order to combat nausea, an anti-histamine can be taken when injecting until the body gets used to it. But most common way to deal with this is to inject Melanotan before bed, this is also beneficial to combat any drowsiness.
Melanotan 2 also causes increases in libido and is often seen in conjunction with outwardly physical signs of sexual arousal whereby the male user experiences prolonged periods of increased blood flow to the penis. This particular side effect does not diminish in severity over time and instances of occurrence are to be expected throughout the period of MT-II use.
•Freckles/Moles Lighter freckles/moles and previously unseen moles may darken and become more visible with the use of Melanotan II.This can also occur naturally just by tanning; however, Melanotan II is known to speed up this process in some users.To reduce the chance of this effect you should initially not inject more than and 2-3mg of Melanotan II into your body between each tanning session as it's hypothesized that tanning evens out the concentration of melanin in the body and prevents it from accumulating in existing freckles/moles (which are natural concentration points for melanin). Similarly, to reduce the risk further, you can take a smaller dose and less frequent injections than is recommend and allow your tan to build more slowly. Any freckles/moles that have darkened during the usage of Melanotan II will usually fade upon cessation of use; however, the time for this to occur will be different for each user. To speed up the process you should also avoid UV exposure.
In addition to freckles and mole changes, there are fairly rare reports of a phenomenon calledhyperpigmentation.The incidence of hyperpigmentation appears to be higher when Melanotan II is taken on its own and without exposure to the sun or sun beds.This is typified by blotches of darkened skin, normally much larger than regular moles. Not all incidences of hyperpigmentation are attributable to increased melanocyte activity even though their appearance may only become apparent during the use of Melanotan 2. This condition is specifically referred to asdiffuse hyperpigmentation, with many possible underlying causes or disorders including Addison's disease, haemochromatosis, hyperthyroidism and certain medications which may induce phototoxic reactions.