A prescription for medical treatment is typically valid for one year from the date it was written by a healthcare provider. After this time, the prescription expires and a new one will need to be issued by the provider in order to continue the treatment. It is important to follow the expiration date on prescriptions to ensure the safety and effectiveness of the medication. **

Possible complications of a polyp surgery include bleeding, infection, damage to surrounding tissues or organs, and a rare risk of perforation of the colon. Additionally, there is a small chance of adverse reactions to anesthesia. It is important for patients to discuss these potential complications with their healthcare provider and to follow post-operative care instructions to minimize the risk of complications. **

Viagogo tickets can be valid if they are purchased from a reputable seller and are for a legitimate event. However, there have been instances where Viagogo tickets have been invalid or fraudulent, so it is important to be cautious when buying tickets from this platform. It is recommended to thoroughly research the seller and event before purchasing tickets from Viagogo to ensure their validity. **

Without more information about the specific circumstances of the Ghusl, it is difficult to determine its validity. In general, for Ghusl to be valid in Islam, certain conditions must be met, such as the intention to purify oneself, washing the entire body with water, and ensuring that water reaches all parts of the body. If these conditions were met, then the Ghusl would be considered valid. It is always recommended to consult with a knowledgeable religious authority for specific guidance on matters of purification in Islam. **

Fasting is still considered valid by many individuals and religious groups as a practice for spiritual, physical, or mental benefits. It is observed in various forms by different cultures and religions around the world. Fasting can promote self-discipline, mindfulness, and empathy towards those who are less fortunate. However, the validity of fasting may vary depending on personal beliefs and individual circumstances. **

Without knowing the specifics of the complaint, it is difficult to determine its validity. Validity of a complaint depends on various factors such as the evidence provided, the context of the situation, and the credibility of the source. It is important to thoroughly investigate the complaint and gather all relevant information before making a judgment on its validity. **

Without more context or information about the stamp in question, it is difficult to determine if it is valid. Stamps can become invalid if they are expired, counterfeit, or not properly affixed to the mail. It is important to check the date, authenticity, and condition of the stamp to ensure its validity. **

Based on the information provided, it appears that the contract may not be valid as it was signed under duress. Duress involves one party using threats or coercion to force the other party to enter into the contract. In this case, the threat of losing the job if the contract was not signed could be considered duress. Contracts signed under duress are typically not considered legally binding. It is advisable to seek legal advice to determine the validity of the contract in this situation. **