Acute IBS attacks. Have prescription levsin (hyoscyamine). 125mg. It's old (aug'11) & little help. Has med potency waned? Can I boost dose amt & or freq til I can get new rx?

Can increase the dos. Levsin (hyoscyamine) could be taken every 6 to 8 hours as needed and you can take it orally or sublingual which is faster acting.If .125mg is not working for you , you can increase the dose to .25mg.Also if you not responding as before need to look for other factors including your stress level and dietary habit.