You cannot purchase them from a pharmacy counter, a health food shop, or any unregulated online source without a valid prescription
10.1186/s12935-022-02496-z 178 WenJ.YiZ.ChenY.HuangJ.MaoX.ZhangL.et al (2022)
Declining GH levels appears to have widespread impact, and the maintenance or increase in declining levels of GH has been the primary focus of numerous research studies
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Dogulu CF, Tsilou E, Rubin B, Fitzgibbon EJ, Kaiser-Kupper MI, Rennert OM, Gahl WA (2004) Idiopathic intracranial hypertension in cystinosis
Its safe to say that supplementation of any kind should only be taken after consulting a medical professional