I bought r-tanna as otc product in pharmacy. I know that otc’s can’t cause serious side effects, so I use it anytime I need it. I need information about optimal amount of r-tanna to stop symptoms of allergy, because it doesn’t help me always.
R-tanna is available like otc product, but you should ask your doctor how often to use it. You probably have problem with dosing of liquid form of r-tanna. More comfortable for using are long acting capsule or tablets. Allergy, sinus congestion and runny nose are common problems, but miss dosing of medicines is never danger less.