Pharmacy Freak Editorial Team

Harsh Singh Rajput is a pharmacist currently working at ESIC and holds an MBA in Pharmaceutical Management from NIPER Hyderabad. He has a strong academic record with top ranks in national-level pharmacy exams, including AIR 61 in NIPER 2024 (MS/M.Pharm), AIR 27 in NIPER MBA, AIR 147 in GPAT 2024, AIR 907 in GPAT 2023, and AIR 6 in AIIMS CRE-2025 for Drug Store Keeper. At PharmacyFreak.com, he contributes expert content, exam strategies, and practical guidance for future pharmacists. Mail- harsh@pharmacyfreak.com

Mechanism of Action of Antihypertensive Drugs

April 10, 2026November 8, 2025 Pharmacy Freak Editorial Team Harsh Singh Rajput

MOA of Antihypertensive Drugs

Introduction Antihypertensive drugs are pharmacological agents used to lower elevated blood pressure and prevent complications such as stroke, … Read more

Mechanism of Action of Antihistamine Drugs

April 10, 2026November 6, 2025 Pharmacy Freak Editorial Team Harsh Singh Rajput

MOA of Antihistamine Drugs

Introduction Antihistamines are pharmacological agents that counteract the effects of histamine, a biogenic amine released during allergic and … Read more

Ester (Functional Group) Chemical Structure

October 25, 2025 Harsh Singh Rajput

Ester functional group, generic 2D structure R–C(=O)–OR′ with carbonyl and alkoxy, carboxylate ester

1. Identification Summary Ester denotes the carboxylate ester functional group with general formula R–C(=O)–OR′ (R, R′ = carbon … Read more

Aldehyde Chemical Structure

October 25, 2025 Harsh Singh Rajput

Aldehyde chemical structure, terminal carbonyl formyl group, 2D skeletal formula R–CHO

1. Identification Summary Aldehyde is a carbonyl functional group in which the carbonyl carbon is bonded to one … Read more

Fructose Chemical Structure

October 25, 2025 Harsh Singh Rajput

1. Identification Summary Fructose is a ketohexose monosaccharide (C₆H₁₂O₆). It exists predominantly as furanose/pyranose hemiketals in solution and … Read more

Pyridine Chemical Structure

October 25, 2025 Harsh Singh Rajput

Pyridine chemical structure, six-membered nitrogen heteroaromatic ring, 2D skeletal formula, C5H5N

1. Identification Summary Pyridine is a six-membered nitrogen heteroaromatic (C₅H₅N) isoelectronic with benzene, with a ring sp²-N that … Read more

Alcohol (Functional Group) Chemical Structure

October 24, 2025 Harsh Singh Rajput

Alcohol functional group (hydroxyl), generic 2D structure R–OH with hydrogen bonding concept

1. Identification Summary Alcohol (functional group) denotes an sp³ carbon bearing a hydroxyl (–OH) substituent: general formula R–OH. … Read more

Mechanism of Action of Antifungal Drugs

April 10, 2026October 24, 2025 Pharmacy Freak Editorial Team Harsh Singh Rajput

MOA of Antifungal Drugs

Introduction Antifungal drugs are pharmacological agents that target fungal infections (mycoses) of the skin, mucosa, and internal organs. … Read more

Mechanism of Action of Antifungal Drugs

October 17, 2025 Harsh Singh Rajput

Pharmacology and clinical mechanisms of Antifungal Drugs

Introduction Antifungal drugs are pharmacological agents used to treat fungal infections (mycoses) affecting the skin, mucous membranes, or … Read more

Ketone Chemical Structure

October 17, 2025 Harsh Singh Rajput

Ketone functional group, 2D skeletal formula R–C(=O)–R′ (no hydrogens on carbonyl carbon), carbonyl compound

1. Identification Summary Ketone is a carbonyl functional group in which the carbonyl carbon is bonded to two … Read more