Harsh Singh Rajput

I am pursuing MBA in pharmaceutical management from NIPER Hyderabad with a strong academic record and proven success in national-level pharmacy entrance exams. I secured AIR 61 in NIPER 2024 (MS/M.Pharm) and AIR 27 in NIPER MBA, along with AIR 147 in GPAT 2024 and AIR 907 in GPAT 2023. I also achieved AIR 6 in AIIMS CRE-2025 for Drug Store Keeper and was selected as a Pharmacist (AIR 61) for ESIC. Additionally, I was the Runner-Up in Round 2 of the EY Case Study Competition. At PharmacyFreak.com, I aim to guide future pharmacists through expert content, exam strategies, and insightful resources based on real experience and academic excellence. Mail- harsh@pharmacyfreak.com

Mechanism of Action of Antiplatelet Drugs

November 15, 2025November 10, 2025 by Harsh Singh Rajput

MOA of Antiplatelet Drugs

Introduction Antiplatelet drugs are pharmacological agents that inhibit platelet aggregation, thereby preventing arterial thrombosis — a key contributor … Read more

Mechanism of Action of Antihypertensive Drugs

November 15, 2025November 8, 2025 by 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

November 15, 2025November 6, 2025 by 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 by 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 by 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

Amine Chemical Structure

October 25, 2025 by Harsh Singh Rajput

Amine functional group, primary/secondary/tertiary amines (R–NH2, R2NH, R3N) and quaternary ammonium (R4N+), 2D skeletal formulas

1. Identification Summary Amine denotes the amino functional group in which nitrogen bears one to three carbon substituents: … Read more

Testosterone Chemical Structure

October 25, 2025 by Harsh Singh Rajput

Testosterone chemical structure (androgen steroid), 2D skeletal formula, C19H28O2, CAS 58-22-0

1. Identification Summary Testosterone is an endogenous androgen used therapeutically for male hypogonadism (primary or hypogonadotropic) and certain … Read more

Fructose Chemical Structure

October 25, 2025 by 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 by 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

NSAID (Class) Chemical Structure

October 25, 2025 by Harsh Singh Rajput

NSAID class generic chemical scaffolds (arylpropionic and diarylheterocycle/coxib), 2D skeletal formulas

1. Identification Summary Nonsteroidal anti-inflammatory drugs (NSAIDs) inhibit cyclo-oxygenase (COX-1/COX-2) to reduce prostaglandin and thromboxane synthesis, producing analgesic, … Read more