OS X Yosemite and Later. 1  Click the Options button associated with the Keychain service item. 2  Use the Verification number field to change âthe security phone number. Remember the phone number must be associated with a phone that is SMS enabled.â Click the OK button.
Guaifenesin is the active ingredient in many cough medicines, such as Robitussin. It is safe to use in pregnancy. If a pregnant woman has a severe cough that doesn't respond to guaifenesin, her doctor can prescribe codeine and other narcotics.uaifenesin is the active ingredient in many cough medicines, such as Robitussin. It is safe to use in pregnancy. If a pregnant woman has a severe cough that doesn't respond to guaifenesin, her doctor can prescribe codeine and other narcotics.
Dextromethorphan is a âsuppressantâ that works on the brain to increase tolerance to irritations that might cause the sort of dry hacking cough you get when you have a cold or flu. Try Benylin Dry Coughs Original Â£4.99 for 150ml or Night Nurse liquid Â£5.99 for 160ml.