Is Methanesulfonamide, N-(6-(5-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-3-(1,1-dimethylethyl)-2-methoxyphenyl)-2-naphthalenyl)- Safe in Breastfeeding

I am a breastfeeding mother and i want to know if it is safe to use Methanesulfonamide, N-(6-(5-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-3-(1,1-dimethylethyl)-2-methoxyphenyl)-2-naphthalenyl)-? Is Methanesulfonamide, N-(6-(5-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-3-(1,1-dimethylethyl)-2-methoxyphenyl)-2-naphthalenyl)- safe for nursing mother and child? Does Methanesulfonamide, N-(6-(5-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-3-(1,1-dimethylethyl)-2-methoxyphenyl)-2-naphthalenyl)- extracts into breast milk? Does Methanesulfonamide, N-(6-(5-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-3-(1,1-dimethylethyl)-2-methoxyphenyl)-2-naphthalenyl)- has any long term or short term side effects on infants? Can Methanesulfonamide, N-(6-(5-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-3-(1,1-dimethylethyl)-2-methoxyphenyl)-2-naphthalenyl)- influence milk supply or can Methanesulfonamide, N-(6-(5-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-3-(1,1-dimethylethyl)-2-methoxyphenyl)-2-naphthalenyl)- decrease milk supply in lactating mothers?

Used in the treatment of hepatitis C, usually in combination with other antivirals. Since the last update we have not found published data on its excretion in breast milk. Its pharmacokinetic data (slightly elevated molecular weight and very high percentage of plasma protein binding) make it very unlikely that significant amounts will pass into milk, so that although there is disagreement (Thompson 2016), other experts believe that treatment with Methanesulfonamide, N-(6-(5-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-3-(1,1-dimethylethyl)-2-methoxyphenyl)-2-naphthalenyl)-, on its own or in combination with ombitasvir, paritaprevir and ritonavir or with sofosbuvir is not contraindicated during breastfeeding (LactMed 2016, Spera 2016). See below the information of these related products:

Methanesulfonamide, N-(6-(5-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-3-(1,1-dimethylethyl)-2-methoxyphenyl)-2-naphthalenyl)- has not been studied in nursing mothers being treated for hepatitis C infection. Because it is greater than 99.5% bound to maternal plasma proteins, amounts in breastmilk are likely to be very low. If Methanesulfonamide, N-(6-(5-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-3-(1,1-dimethylethyl)-2-methoxyphenyl)-2-naphthalenyl)- used alone or in combination with sofosbuvir or with ombitasvir, paritaprevir and ritonavir (Viekira Pak) is required by the mother, it is not a reason to discontinue breastfeeding.[1] Some sources recommend against breastfeeding when Methanesulfonamide, N-(6-(5-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)-3-(1,1-dimethylethyl)-2-methoxyphenyl)-2-naphthalenyl)- is used with ribavirin. Hepatitis C is not transmitted through breastmilk[2][3] and breastmilk has been shown to inactivate hepatitis C virus (HCV).[4][5] However, the Centers for Disease Control recommends that mothers with HCV infection should consider abstaining from breastfeeding if their nipples are cracked or bleeding. It is not clear if this warning would apply to mothers who are being treated for hepatitis C. Infants born to mothers with HCV infection should be tested for HCV infection; because maternal antibody is present for the first 18 months of life and before the infant mounts an immunologic response, nucleic acid testing is recommended.[2][3]