Zerodol TH and Thiospas A are both combination medications used as painkillers to provide relief from pain, including muscle spasms, sprains, strains, muscle aches, and musculoskeletal pain. They contain the same active ingredients, which are aceclofenac and thiocolchicoside. Although the brand names differ, their composition and purpose are similar. It is advisable to consult a healthcare professional to determine the most appropriate medication and dosage for your specific condition.