"doctor suggested saxenda and this is week 4 @ increased the injection to 2.4. total loss is 6.5 kilos.  side effects are extreme tiredness, constipation &amp; heart burn. due to knee replacement 10 months ago &amp; fractured back i&#039;m limited to exercise so walk every day &amp; night &amp; incl hill climbs. i eat 1000 calories per day &amp; satisfied. however this week i have developed red welts at the injection site. i&#039;ve put ice on it but as yet will not subside &amp; concerned about another injection. i can&#039;t see my doctor till next week so was wondering if anyone else had this experience &amp; why?"