Muscle cramps: the ordinary causes before the exotic ones

Timeline matters: onset, duration, pattern over days or weeks, relationship to injection and to meals all provide information that "I have nausea" does not. Posting those details gets better responses than reporting the symptom alone.

Injection site reaction: local erythema, nodules, or induration at injection sites is reported by some people. Site rotation, avoiding reinjection into the same area for weeks, and allowing areas that react to recover all reduce the frequency.

Worth separating two things that post #17 runs together.

Vomiting: when it is expected (first-dose reactions or early titration) and when it is a reason to stop and seek help are different. Occasional vomiting during titration is ordinary. Persistent vomiting or vomiting of a new character later in treatment warrants contact with your clinician.

Lean mass loss: the rate of lean tissue loss depends on protein intake, resistance training volume, and total energy deficit. Adequate protein and maintaining training intensity both help preserve lean mass during weight reduction.

Picking up post #32: that is the part I would want checked first.

Injection site reaction: local erythema, nodules, or induration at injection sites is reported by some people. Site rotation, avoiding reinjection into the same area for weeks, and allowing areas that react to recover all reduce the frequency.

For anyone arriving from a search: the marked solution above is the direct answer, and the replies underneath it add the caveats that make it safe to use.

Fatigue: commonly reported, frequently multifactorial. It is worth asking whether other factors have changed (sleep, training volume, diet adequacy, hydration) before attributing all of it to the compound. Some fatigue resolves with time; some persists.

Picking up post #83: that is the part I would want checked first.

Constipation: common, manageable, and frequently under-reported because it is not dramatic. Increasing fibre and fluid intake helps. Over-the-counter management is usually effective. This is worth addressing proactively rather than waiting for it to worsen.

I disagree with the reply above, and I think the disagreement is substantive rather than terminological.

The distinction being drawn does not survive when you look at the published data for this specific question. I would be glad to be shown wrong on this, because the version I am arguing against is more convenient.