Srimathe Ramanujaya Namaha,

Adiyen found a similar topic conversation between three BhagavatAs – BadriNarayan 🕵️ , Vikraminside 👶 and KongilPiratti👩‍💼 in this thread….

Offerings during periods

Adiyen (ElayaAlwar) Srinivasa (DhoddayacharyAr) Dasan.

Dhanyosmi Elayalwar Swami for referring to this tread. adiyen, from Swami’s upanyasams have heard that chanting namas can be done at anytime but not mantras. Draupathi chanted the govinda nama during her periods as she was being abused and got the blessing. 

Srimathae Ramanujayae namaha,
Sri Velukudi krishnan swamy thiruvadigala saranam,

Tulasi amma,

Referring to our swamy’s speech remember saying
“That time should be used only for rest and it should be taken on that way.And we should not voluntarily chant mantras or namas..But nobody can stop you from thinking of bhagawan as he is residing with in yourself and everyone.

The reason is we are workshipping pavithran and He will make us also pavithram who workship him.
In Perialwar’s thirupallanadu pasuram 12

“pallandu endru pavitharanai parametiyai…”

adiyen.

Srimathe Rangaramanuja Mahadesikaya Namaha
Srimathe Sri Varaha Mahadesikaya Namaha

Chanting Vishnu nAma is okay without Poorva Sankalpam.& phala Sthuthi for women. – Srimath Andavan Sri Rangaramanuja Mahadesika Swamy for Vishnu Sahasranama AdhikAri

Meaning:
From Vishwam Vishnu to VanamAli women can say.

Bhagavan nAma one can utter anytime.

My mother called Krishna while delivering adiyen.

Krishna Premi Anna said even in toilet we can utter Bhagawan nAmA.

Anytime means anytime.

Dasanudasan