Brief Answer:
Not a sulfa drug
Detailed Answer:
Hello
Thanks for the query
I understand that you are allergic to sulfa group of compounds. Tindiazmax, Lexpro and clotrimazole are safe and do not contain sulfa moeity.
I would like share with you a PDF which will list out the common drugs which you need to avoid in order to prevent a reaction. It is not just sulfa drugs but a few other non sulfa drugs can cause reactions in people who are allergic to sulfa compounds. Always speak to your doctor before taking any drugs, do not self medicate.
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I hope I was of help, if you have any further queries please get back to me
Regards