how long until robinal starts working to stop sweating
Comment from: sc2829, 19-24 on Treatment for 5-10 years (Patient) Published: February 19. I started taking Robinul when I was 14 yrs old for sweating hands and feet. It started working within 2 days. As soon as a generic was available I switched because the Robinul is so expensive.y side effects are dilated pupils and dry mouth but no more sweating! Related Reading: dry mouth. Comment from: 19-24 on Treatment for 5-10 years (Patient) Published: April 12. I have been taking the generic version of this drug for 5 years now and I couldn't ask for anything better to treat my hyperhydrosis.