I too can use Google
From https://www.drugs.com/sfx/lupron-side-effects.html
Lupron side effects
• bone pain, loss of movement in any part of your body;
• swelling, rapid weight gain;
• a seizure;
• unusual changes in mood or behavior (crying spells, anger, feeling irritable);
• sudden chest pain or discomfort, wheezing, dry cough or hack;
• painful or difficult urination; or
• high blood sugar - increased thirst, increased urination, hunger, dry mouth, fruity breath odor.
Rare but serious side effects may occur. Call your doctor if you have:
• pain or unusual sensations in your back, numbness, weakness, or tingly feeling in your legs or feet;
• muscle weakness or loss of use, loss of bowel or bladder control;
• heart attack symptoms - chest pain or pressure, pain spreading to your jaw or shoulder, nausea, sweating; or
• signs of a stroke - sudden numbness or weakness (especially on one side of the body), sudden severe headache, slurred speech.
Common Lupron side effects may include:
• hot flashes, sweating, acne, rash, itching, scaly skin;
• mood changes;
• headache, general pain;
• vaginal swelling, itching, or discharge;
• breakthrough bleeding;
• weight gain;
• decreased testicle size; or
• redness, pain, swelling, or oozing where the shot was given.
This is not a complete list of side effects and others may occur.
Less Common
• Fast or irregular heartbeat
Rare
• Bone, muscle, or joint pain
• fainting
• fast or irregular breathing
• numbness or tingling of the hands or feet
• puffiness or swelling of the eyelids or around the eyes
• skin rash, hives, or itching
• sudden, severe decrease in blood pressure and collapse
• tightness in the chest
• troubled breathing
For males only (adults)
More Common
• Arm, back, or jaw pain
• bloody or cloudy urine
• blurred vision
• chest pain or discomfort
• difficult, burning, or painful urination
• difficulty with moving
• dizziness
• frequent urge to urinate
• headache
• increased urge to urinate during the night
• muscle pain or stiffness
• nausea
• nervousness
• pain in the joints
• pale skin
• pounding in the ears
• slow or fast heartbeat
• sweating
• troubled breathing with exertion
• unusual bleeding or bruising
• unusual tiredness or weakness
• waking to urinate at night
Rare
• Pain in the groin or legs (especially in the calves)
Incidence Not Known
• Altered mental status
• cardiovascular collapse
• double vision
• visual changes
• vomiting
I have a lot more like this ^ as I have been researching leuprolide chemotherapy for going on 7 years. This chemotherapy shuts off the hypothalamus gland and the pituitary gland. So what does that do besides stop the production of testosterone? A whole bunch of stuff, intro at Wiki:
https://en.wikipedia.org/wiki/Hypothalamus
"Is Lupron considered a chemotherapy drug?
Lupron® is an “antineoplastic agent”, meaning that it is a cancer chemotherapy drug. Like all antineoplastics, Lupron® is harmful to both cancerous and non-cancerous cells — particularly to pregnant women and developing fetuses."
This stuff has jack (nothing) to do with testosterone and it cannot be addressed with a patch - especially stuff like a heart attack, type 2 diabetes or a pituitary stroke/bleed.