That is correct, 1 tsp or a tad less of the 7.5 mg/tsp syrup will provide the correct dose of DM. Another thing I was told by a scientist studying the suppression of inflammation caused by bacterial lipopolysaccharide in mouse brains was to avoid DM preparation that contain polystyril, a substance that slows down the release of the DM.

Michael's advice on checking the link he gave is good, too.

It is you rather than your husband who may be taking the preparation; correct?

Robert