3,3-Substituted spiro-1,2,4-benzothiadiazines

A compound of the formula ##STR17## wherein X.sup.1 is H or halo or trifluoromethyl,

• X.sup.2 is H, halo or --SO.sub.2 NH.sub.2,
• R is H or lower alkyl,
• R.sup.1 is H or lower alkyl,
• R.sup.2 is lower alkyl or C.sub.3 -C.sub.6 cycloalkyl
• R.sup.1 and R.sup.2 may be joined to form --(CH.sub.2)--.sub.4 or --(CH.sub.2).sub.5 --,
• R.sup.3 is H, lower alkyl, phenyl or chlorophenyl,
• m is 0 or 1 and
• n is 0 to 5
• and pharmaceutically acceptable salts thereof.