Does levitra or novolog cause leg discoloration and swelling from mid calf to the whole foot?

by Delores
(pahrump nv usa)




Quick Answer
Yes, NovoLog can cause peripheral swelling in some people, especially after insulin treatment is intensified and previously high glucose improves. If the second medicine was Levemir, that insulin can also cause edema. However, severe swelling with reddish-blue discoloration from the calf to the foot is not something to assume is a harmless medicine effect. A blood clot, impaired circulation, venous disease, infection, or heart, kidney, liver or thyroid problems should be excluded promptly.


Answer by Dr. Albana Greca, MD, MMedSc



Hi Delores,



First, please check the exact name written on the pen or prescription. I suspect you may mean Levemir, which is long-acting insulin detemir. Levitra is vardenafil, a medicine used for erectile dysfunction, and it is not an insulin.



Your previous treatment also appears to have been Novolin R with Humulin N, rather than “Humalog N.” Bring every vial, pen and medicine bottle to the next appointment so the complete regimen can be verified.



Could NovoLog or Levemir Cause the Swelling?



Yes, it is possible. Insulins, including NovoLog and Levemir, may cause sodium retention and peripheral edema. This is more likely after insulin is started or intensified and glucose control improves quickly after a period of poor control.



Your HbA1c of 8% or higher suggests that the new regimen may have been intended to improve glucose substantially. The fact that the swelling began after the change and gradually disappeared after returning to the old regimen makes a medication-related effect plausible. It does not prove that the insulin was the only cause.




Important: Simple insulin edema usually causes soft swelling. Marked reddish-blue discoloration, severe swelling and inability to walk require evaluation for circulation and other medical problems.


Other Causes That Must Be Excluded




  • Deep vein thrombosis: usually causes swelling, warmth, pain or discoloration, often more on one side.

  • Venous insufficiency: blood pools in the lower legs and may cause swelling and red, purple or blue skin changes.

  • Reduced arterial circulation: may cause a cold, pale or blue foot, pain, numbness or weak pulses.

  • Heart, kidney or liver disease: these can produce swelling in both legs.

  • Infection or Charcot foot: diabetes increases the importance of checking a red, warm or swollen foot promptly.

  • Thyroid imbalance or another medicine effect: these should be reviewed with laboratory tests and a complete medication list.




Seek emergency care if swelling returns with chest pain, shortness of breath, coughing blood, fainting, sudden severe leg pain, a cold or blue foot, new numbness or weakness, fever, or rapidly spreading redness. Do not wait for a routine appointment.


What Should Be Checked?



Ask for a prompt medical review, preferably while the swelling is present. If it happens again, take clear photographs and note whether both legs are equally affected.



The clinician may need to check:




  • leg temperature, pulses, skin color and capillary refill;

  • whether the swelling leaves a dent when pressed;

  • calf measurements and whether one side is larger;

  • venous ultrasound if a blood clot is possible;

  • arterial testing if the foot is cold, painful or discolored;

  • kidney and liver function, electrolytes, albumin and urine protein;

  • thyroid testing and review of the Armour Thyroid dose;

  • heart symptoms, weight gain and shortness of breath;

  • the exact insulin doses and how quickly glucose improved.



What About Levitra?



If the medicine truly was Levitra or generic vardenafil, leg swelling is not among its common reactions. Rare allergic swelling has been reported, but severe lower-leg swelling and discoloration would still require investigation rather than being attributed automatically to that medicine.



Do Not Stop Insulin Without a Replacement Plan



You were right to take the reaction seriously, but stopping a prescribed insulin regimen without an immediate replacement plan can cause severe hyperglycemia or ketoacidosis. Any future change should be coordinated the same day with a clinician, urgent-care service or diabetes team.



Because your previous HbA1c was 8% or higher, returning permanently to the old regimen without adjustment may leave diabetes insufficiently controlled. Your clinician can consider a slower transition, different doses, another basal insulin, closer glucose monitoring, and evaluation for edema.



My Advice



I do believe your description should be taken seriously. NovoLog and Levemir can cause peripheral edema, and the timing you described supports a possible relationship. However, the reddish-blue discoloration and the degree of swelling mean that a clot, venous disease, impaired arterial circulation and organ-related fluid retention must be excluded.



Write down the exact medicine names, doses, start and stop dates, glucose readings and how long the swelling took to disappear. Show the doctor any photographs. If the swelling returns, seek assessment while it is visible rather than waiting several weeks.



Hope this helps.



Dr. Albana Greca



References






Educational only — not personal medical advice. Severe leg swelling with red, purple or blue discoloration requires prompt medical assessment, especially when diabetes is present.


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