Side Effects Difference: Topical finasteride generally has lower systemic absorption than oral forms, potentially leading to fewer systemic side effects like weight gain.

Weight Gain: Weight gain is not commonly associated with finasteride, whether oral or topical. Your weight changes might have been due to other factors.

Individual Responses: Reactions to medications vary. Topical finasteride may reduce systemic side effects but doesn't guarantee their elimination.

Consult Your Doctor: Discuss your past experiences and concerns with your healthcare provider before starting topical finasteride. They can help tailor your treatment and monitor your response.