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A new method reliably detects minoxidil in hair products, revealing some non-compliance with regulations.

Best results found using acetonitrile, water, and trifluoroacetic acid or methanol mixture.

Finasteride may affect PNMT, causing side effects.

Quick, accurate minoxidil measurement in hair loss products using photometric flow titration.

A reliable method was created to measure dutasteride and related molecules in capsules.

The two finasteride formulations are bioequivalent.

New pregnane derivatives were more effective than finasteride at inhibiting a key enzyme for male pattern baldness.

Researchers developed a quick and accurate method to measure finasteride and tamsulosin in tablets.

Mefloquine was generally safe at 500 mg weekly, but higher doses caused nausea and diarrhea.

The method accurately measures testosterone metabolites with high sensitivity and low environmental impact.

The tablets are easy to make, look good, work well, and are ready for mass production.

Hair follicles are important for the absorption of certain drugs into the skin.

A method was created in 2005 to identify minoxidil, a hair growth ingredient, in products using two types of capillary zone electrophoresis, and it found that most products had about 2% minoxidil.

Compounds 4, 4b, and 4c effectively inhibit an enzyme linked to testosterone conversion without significant toxicity.

Finasteride is stable except in high pH, and lactose and magnesium stearate should be replaced in formulations.

A new combination of tadalafil and finasteride improves drug performance and stability.

Nitrendipine and nifedipine effectively block muscle contractions, while papaverine relaxes them and minoxidil needs high amounts to work.

LY320236 is a strong blocker of two enzymes that change testosterone into dihydrotestosterone and might help treat conditions related to male hormones.

The reconstructed skin model from hair follicles functions like human skin in processing chemicals and can be used to test ingredient safety.

Different compounds move through artificial sebum at different rates, which can help choose the best ones for targeting hair follicles.

The two finasteride tablets are bioequivalent.

The method accurately measures finasteride in skin after using special carriers.

Caffeine penetrates human skin in lab tests similarly to real-life conditions, but actual skin use is still essential for accurate results.

The new progesterone derivatives effectively inhibit 5α-reductase and bind to the androgen receptor.

Accurate method measures finasteride levels in human plasma using gas chromatography-mass spectrometry.

Domestic and imported finasteride tablets work the same in the body.

New steroidal compounds moderately block an enzyme related to testosterone conversion, less effectively than finasteride.

The oral testosterone effectively increased testosterone levels and reduced SHBG, showing promise for treating testosterone deficiency.

Low doses of some substances can be beneficial, while high doses can be harmful or toxic.

Anticancer drugs are increasingly found in surface waters, and their long-term environmental effects are not well understood, requiring better testing methods.