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They are often sufficient for correcting mild dietary deficiencies (e.g., in vegans who dont consume fortified foods) and can sometimes be used for maintaining levels after an initial course of injections, provided absorption is adequately monitored by a healthcare professional

Diet and exercise are an excellent start to a healthy weight, but sometimes stubborn pounds need an extra boost to keep them from hanging on

For sustained weight loss, pair interventions: nutrition, behavior change, progressive activity, and, where suitable, medications or supplements backed by trials

If you do that, it should be guided and monitored

Related references HCG IU dosing reference and reconstitution chart