Listen for two clicks and watch the yellow bar until it stops

Seek prompt GP or prescriber advice if you experience: Severe or worsening pain at the injection site that persists beyond 24-48 hours or intensifies rather than improving Signs of infection including increasing redness spreading beyond the immediate injection site, warmth, swelling, pus or discharge, or fever Significant bruising that is extensive, painful, or accompanied by a hard lump under the skin Allergic reaction symptoms such as widespread rash, hives, facial swelling, difficulty breathing, or rapid heartbeatthese require immediate medical attention via 999 or A&E Persistent lumps or hard areas at injection sites that don't resolve within a few weeks, which may indicate lipohypertrophy Numbness, tingling, or shooting pain radiating from the injection site, suggesting possible nerve irritation Recurrent severe pain with every injection despite proper technique, which may indicate an underlying issue Injection site reactions can include mild, self-limiting symptoms such as redness, itching, or tenderness

Gastrointestinal upset tends to improve after the first month as your body adapts
Specifically, Ex4 blocks the ability of nicotine to activate the mesolimbic dopamine system and cause reward (Tuesta et al., 2017) in male mice
Blanchette-farra n and torti f m