R.D.
Call a pharmacist in your area. They know what is safe!
In the meantime, you can make a home remedy that my sister passed to me, and IT WORKS!!
1/2 cup honey
2 lemons, juiced (MUST be real lemons, not the stuff you can buy!)
2 cloves garlic, pressed
2 - 3 cups water
Boil the water then remove from heat. Stir in honey until dissolved. Stir in the rest. Drink 1/2 cup several times a day. Store in refrigerator and heat as needed. It sounds GROSS, but it isn't that bad when you are sick. The better you feel, the worse it tastes. If it tastes horrible, you are better!
EVERYTHING in it is naturally helpful in a safe (medecinal) way.
Lemon is an antioxidant
Garlic helps with congestion
Viruses cannot harbor in honey
Water is .... well hydrating.