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The key rule is maintaining minimum spacing between doses: Semaglutide: minimum 48 hours (2 days) between doses when shifting injection day Tirzepatide: minimum 72 hours (3 days) between doses when shifting injection day Retatrutide: follow your research protocol spacing, typically weekly If you fly east (losing hours), your injection day arrives sooner than expected
Testing of two batches by the UK's Medicines and Healthcare products Regulatory Agency (MHRA) found the products, which have now been pulled from sale, contained between 1.5mg and 1.7mg of melatonin
The 4 mg maintenance dose data is expected in 2026 and will define long-term protocol architecture
At 8mg per week one 10mg vial provides one week and two days
