Harsh Singh Rajput

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

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

Mechanism of Action of Antidepressant Drugs

April 10, 2026October 17, 2025 Pharmacy Freak Editorial Team Harsh Singh Rajput

MOA of Antidepressant Drugs

Introduction Antidepressant drugs are psychotropic agents used to treat major depressive disorder, anxiety, OCD, PTSD, and chronic pain … Read more

Carboxylic Acid Chemical Structure

October 17, 2025 Harsh Singh Rajput

Carboxylic acid functional group, 2D skeletal formula R–C(=O)OH, carboxyl group

1. Identification Summary Carboxylic acid denotes the carboxyl (–C(=O)OH) functional group; general formula R–COOH. Core features: acidic proton on the hydroxyl, resonance-stabilized carboxylate conjugate … Read more

Mechanism of Action of Anticonvulsant Drugs

April 10, 2026October 16, 2025 Pharmacy Freak Editorial Team Harsh Singh Rajput

MOA of Anticonvulsant Drugs

Introduction Anticonvulsant drugs, also called antiepileptic drugs (AEDs), are agents that suppress abnormal electrical discharges in the brain … Read more

Mechanism of Action of Anticoagulant Drugs

April 10, 2026October 16, 2025 Pharmacy Freak Editorial Team Harsh Singh Rajput

MOA of Anticoagulant Drugs

Introduction Anticoagulants are blood-thinning agents that prevent the formation and extension of blood clots (thrombi) in the vascular … Read more

Benzene Chemical Structure

October 16, 2025 Harsh Singh Rajput

Benzene chemical structure, aromatic ring, 2D skeletal formula, C6H6

1. Identification Summary Benzene is an aromatic hydrocarbon (C₆H₆) consisting of a planar six-membered ring with delocalized π … Read more

Mechanism of Action of Anticholinergic Drugs

April 10, 2026October 14, 2025 Pharmacy Freak Editorial Team Harsh Singh Rajput

MOA of Anticholinergic Drugs

Introduction Anticholinergic drugs, also known as parasympatholytic agents, inhibit the actions of the neurotransmitter acetylcholine (ACh) at muscarinic … Read more