Avoid using caffeine if you are hypersensitive or allergic to it and stop using it if you develop a reaction.
Caffeine can aggravate certain existing conditions. Please consult a health care professional if you have high blood pressure, glaucoma, anxiety disorders, osteoporosis, or overactive bladder syndrome.
Do not use caffeine in combination with other products that increase blood pressure, such as certain natural health products (e.g., bitter orange extractextractto get, separate, or isolate a desired active ingredient, or ephedra) or medications (e.g., ephedrine).
Do not use caffeine in combination with food products that contain caffeine such as coffee, tea, colas, cocoa, guarana, mate, and energy drinks.
If you are pregnant, breast-feeding, or able to become pregnant, consult a health care professional before using doses of over 300 mg per day.
Caffeine is a stimulant and in doses of over 600 mg per day it may cause anxiety, a rapid or irregular heartbeat, insomnia, restlessness, nervousness, tremor, and headache.
Additionally, there may be an interaction between caffeine and the following medications:
- anticoagulants/antiplatelets (e.g., aspirin, clopidogrel, warfarin)
- beta-adrenergic agonists (asthma medications; e.g., salbutamol, terbutaline)
- antiepileptics (e.g., carbamazepine, ethosuximide, phenobarbital, phenytoin, valproate)
- diureticdiuretican agent that increases urine flows (e.g., hydrochlorothiazide, indapamide)
- quinolone antibiotics (e.g., norfloxacin, levofloxacin, ciprofloxacin)
Talk to your doctor before using calcium if you are taking any of these medications
Before taking any new medications, including natural health products, speak to your physician, pharmacist, or other health care provider. Tell your health care provider about any natural health products you may be taking.