What are the common side effects of tetracycline?

Tetracycline is known to have several side effects, with photosensitivity being one of the most common. Photosensitivity refers to an increased sensitivity to sunlight, leading to a higher risk of sunburn and skin rashes when exposed to UV light. This occurs because tetracycline can interact with sunlight and cause skin reactions in some individuals, making them prone to adverse effects from sun exposure.

Among the other options, hair loss, insomnia, and weight gain are not commonly reported side effects associated with tetracycline. Tetracycline's side effect profile is notably focused on its capacity to cause gastrointestinal upset, photosensitivity, and, in rare cases, effects on bone and teeth development in children, but hair loss, insomnia, and weight gain do not generally align with the well-documented side effects of this antibiotic. Understanding these side effects helps in patient education and in managing potential complications during treatment with tetracycline.