Do qua nhieu cong viec, chuyen an uong nha ba Loanmay hom vua roi cu bua duc bua cai. Vi vay, ba da mua san mot goi sam,thinh thoang dua cho con chau, va ban than  minh cung ngam. Den sat homcuoi, ba thay rat chong mat, dau dau, mat hoi mo, nghe co tieng o otrong tai.

Do huyet ap, ba Loan  thay con so tang vot. Tu van bacsi, ba duoc giai thich la tinh trang cang thang do viec nha cong voidung nhan sam da khien huyet ap tang cao.

Theo bac si Ta Van Sang, Trung tam  y duoc Tinh hoa(Nguyen Nhu Do, Ha Noi), nhan sam duoc khuyen cao khong dung cho nhungnguoi von co benh huyet ap cao nhu ba Loan, boi co the lam con tanghuyet ap tro nen tram trong hon, rat nguy hiem.

Ngoai ra, ban cung khong nen dung nhan sam trong nhung truong hop sau:

Dau bung: Sach thuoc Dong y co cau "Phucthong phuc nhan sam tac tu" tuc la dau bung ma uong nhan sam thi co thenguy hiem den tinh mang.

Kho ngu: Nhan sam co the hung phan khien ban cang kho ngu them, vi vay ban khong nen dung no vao buoi toi.

Nguoi khoe manh: Neu dung nhieu se lang phi va co the gay mat can bang cho co the.

Nhan sam rat tot khi su dung cho nhung nguoi met moi,suy nhuoc, nhat la nhung nguoi gay yeu, co dia noi nhiet (nong trong),hay bi mun nhot, trung ca, rom say, man ngua. Nguoi co thai met moi,suy nhuoc van co the su dung, nhung trong 3 thang dau thi phai that canthiet moi dung vi day la giai doan hinh thanh thai nhi, nhan sam co theanh huong khong tot cho em be.

Chi nen dung 2-4 g nhan sam moi ngay, va cung khongnen dung thuong xuyen vi no de lam cho co the phu thuoc vao duoc lieu.Chi nen coi nhan sam la mot trong cac bien phap de tang cuong suc khoe,ben canh cac bien phap khac nhu an uong hop ly, tap luyen thuong xuyen.

Viec dung qua nhieu nhan sam co the gay ngo doc vi vithuoc nay van co doc tinh. Cac thuc nghiem cho thay, neu chuot nhatuong bot nhan sam voi lieu 5 g/kg can nang thi 50% so chuot se bi chet.

Ban co y kien gi ve bai viet Nguoi cao huyet ap khong nen dung nhan sam nay? Hay goi suy nghi, binh luan, danh gia, loi khuyen ... cua ban ve bai viet Nguoi cao huyet ap khong nen dung nhan sam ban tai day.