Misconceptions and Truths About Dermatology Medications (Acne Medication, Hair Loss Medication) | [Yonsei Star Dermatology Sinchon]

You've probably held a prescription from a dermatologist and hesitated, thinking, "Isn't this too strong?" Whether it's acne medication or hair loss medication, the first questions that usually come to mind when you receive the prescription are, "Is it safe? Is it okay to take it for a long time?" To put it simply, most dermatology medications are used within a manageable range if the dosage and timing are followed, and accurate information is more important than vague fears.

Since acne often appears intensely during adolescence, many parents worry that medication might stunt growth. This can be summarized as "partially true for young ages."

Acne treatment typically starts with topical medications, then progresses to oral medications if improvement is slow.

• Topical medications: Differin, Epiduo Gel
• Oral medications: Minocycline
• Prescription order: Topical agents first, then gradual transition to oral medications
• Recommended timing: 1 hour before meals or 2 hours after meals

There's a point to note here. Tetracycline-class antibiotics are known to affect bone growth if taken by children under 8 years old. However, after 12 years of age, they do not interfere with height growth, so from this age group, both topical and oral medications may be prescribed together. Also, since the absorption of these antibiotics decreases when mixed with food, it is recommended to take them 1 hour before meals or 2 hours after meals.

Isotretinoin, well-known as a sebum regulator, is often accompanied by the phrase "absolutely contraindicated during pregnancy." This is closer to fact than misconception.

A frequently asked question is, "Can I plan a pregnancy immediately after stopping?" Isotretinoin is known to remain in the body for about 30 days. Therefore, for safety, we often recommend contraception for about 3 months after discontinuing the medication. If acne medication use and pregnancy timing overlap, it is safer to adjust the schedule through consultation rather than self-judgment. If acne itself is a concern, we recommend starting by reviewing information on acne symptoms and causes.

Many people are also more concerned about the marks left after acne has subsided. In such cases, you can consider acne scar treatment options separately from medication.

For questions, contact us via chat for acne medication inquiries

It is true that male pattern hair loss medications have side effects. However, understanding the frequency helps reduce misunderstandings.

Even if symptoms like decreased libido appear, they are generally known to recover when the medication is stopped, so you do not need to worry excessively. Unlike isotretinoin mentioned earlier, hair loss medications are reported to disappear from the body within about 2-3 days after discontinuation.

Regarding pregnancy planning, the risk is known to be almost non-existent if the pregnant woman does not directly touch the pills. Therefore, it is not necessarily required to stop just for pregnancy planning, but if you are planning a pregnancy, we recommend taking it after sufficient consultation with a specialist.

The perception that "allergy medication makes you feel foggy" was true for older medications but does not apply to current ones.

• First-generation antihistamines: May be accompanied by lethargy, drowsiness, dry mouth, and impaired concentration
• Second-generation and later: Reported to have significantly reduced similar symptoms
• Long-term use: Known to be relatively safe even with daily use for several years
• Prescription principle: Prioritize medications with less drowsiness during daytime hours

In the clinic, many patients complain that itching worsens in the evening. In cases where itching is severe enough to make it difficult to sleep at night, a first-generation medication that induces drowsiness and also calms itching may be prescribed. Conversely, for daytime hours, we recommend second-generation medications to avoid disrupting daily life. This means we don't unconditionally exclude first-generation medications, but rather choose them according to symptoms and time of day.

Since each medication has different properties, it's difficult to lump them together as "strong." Here are the key takeaways:

• Acne antibiotics require caution in children under 8 but are prescribed within a safe range after 12 years of age.
• Isotretinoin is contraindicated in pregnancy, and contraception is recommended for about 3 months after discontinuation.
• Hair loss medication side effects are low in frequency and known to recover upon discontinuation.
• Second-generation and later antihistamines have significantly reduced drowsiness burden.

Even for the same medication, prescriptions vary depending on age, pregnancy plans, and lifestyle patterns, so consultation tailored to your condition is more accurate than internet information. If you experience uncomfortable changes while taking medication, please inquire first rather than discontinuing it arbitrarily.

Sang-Joo Lee, Chief Director (MD, PhD, Yonsei University College of Medicine and Graduate School; Completed Dermatology Residency at Severance Hospital; President of the Korean Dermatological Association) Chief Director Sang-Joo Lee's Profile First Published 2023-07-31 / Last Reviewed 2026-06-16

This content is for general information purposes only, and individual responses and effects to medication may vary. Please confirm accurate diagnosis and prescription through consultation with medical staff.