Common Fatigue, Headache, Dizziness, Decreased blood pressure.

Expert advice for Labetol Injection
May cause dizziness in the first few days. Check your blood pressure 1 week after starting Labetol, and inform your doctor if it hasn't improved. May cause fatigue and erectile dysfunction. Can hide symptoms of low blood sugar. Be careful if you're diabetic. Should not be discontinued abruptly as it may increase the chances of a heart attack or other heart problems.

Q. Is labetalol a blood thinner/ diuretic/ vasodilator/ water pill/ addictive?
Labetalol is not a blood thinner/ diuretic/ vasodilator/ water pill/ addictive. It is a beta blocker used for reduction of blood pressure

Q. Can I take labetalol with ibuprofen/ tylenol/ benadryl/ aspirin/ tums/ paracetamol/ aleve/ Sudafed/ phentermine?
Labetalol is not known to interact with Benadryl (anti-allergy)/ tums (antacid)/ Sudafed (cough medication)/ phentermine (appetite suppressant). Labetalol is known to interact with ibuprofen (pain killer)/ tylenol (pain killer) / aspirin (pain killer)/ paracetamol/ aleve (pain killer). Labetalol interacts with a variety of drugs and hence the doctor's advice must be strictly followed on taking any drug along with it

Q. Does Labetol cause blood sugar/weight gain/affect heart rate/insomnia/weight loss/ constipation/ frequent urination?
Labetol is known to cause blood sugar/ weight gain/ affect heart rate. It is not usually known to cause insomnia/ weight loss/ constipation/ frequent urination. If any side effect is observed while on therapy with Labetol please inform the doctor immediately.