The correct name for alendronate is alendronate tablets. Its side effects include systemic reactions, gastrointestinal reactions, neurological, skin allergies, skeletal muscles, lungs, and special sensations. 1. Systemic reactions: there may be transient myalgia, discomfort, fatigue, and fever after taking alendronate sodium; symptomatic hypocalcemia or peripheral edema may occur in the presence of causative conditions. 2. Gastrointestinal reactions: esophagitis, esophageal erosion, esophageal ulceration, esophageal stenosis or perforation, gastric or duodenal ulceration. 3. Nervous system: dizziness, vertigo. 4. Musculoskeletal: pain in bones, joints, or muscles, which may be disabling in rare cases; swollen joints, low-energy fracture of the femoral stem or low-energy fracture of the sub-rotor. 5. Pulmonary: acute asthma exacerbation. 6. Skin: rash, itching, alopecia, Stevens-Johnson syndrome, toxic epidermal necrolysis. 7. Special sensory: uveitis, scleritis, superficial scleritis. 8. Others: cholesteatoma of the external auditory canal, limited osteonecrosis of the jaw. Alendronate can be used to treat osteoporosis in postmenopausal women to prevent hip and spine fractures, and in men with osteoporosis to increase bone mass. It is contraindicated in patients who are hypersensitive to any of the components of alendronate, in patients with esophageal abnormalities that cause delayed emptying of the esophagus, in patients who are unable to stand or sit upright for at least 30 minutes, and in patients with a history of allergic reactions such as urticaria or angioedema. This product is not suitable for children and should be used with caution in lactating women. If you need to use alendronate sodium tablets, please consult a professional doctor, follow the doctor’s instructions, reasonable use of medication.